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# from collections import deque
import numpy as np
import random
import torch
import pickle as pickle
class rpm:
# replay memory
def __init__(self, buffer_size):
self.buffer_size = buffer_size
self.buffer = []
self.index = 0
def append(self, obj):
if self.size() > self.buffer_size:
print('buffer size larger than set value, trimming...')
self.buffer = self.buffer[(self.size() - self.buffer_size):]
elif self.size() == self.buffer_size:
self.buffer[self.index] = obj
self.index += 1
self.index %= self.buffer_size
else:
self.buffer.append(obj)
def size(self):
return len(self.buffer)
def sample_batch(self, batch_size, device, only_state=False):
if self.size() < batch_size:
batch = random.sample(self.buffer, self.size())
else:
batch = random.sample(self.buffer, batch_size)
if only_state:
res = torch.stack(tuple(item[3] for item in batch), dim=0)
return res.to(device)
else:
item_count = 5
res = []
for i in range(5):
k = torch.stack(tuple(item[i] for item in batch), dim=0)
res.append(k.to(device))
return res[0], res[1], res[2], res[3], res[4]
|
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.nn.utils.weight_norm as weightNorm
from torch.autograd import Variable
import sys
def conv3x3(in_planes, out_planes, stride=1):
return (nn.Conv2d(in_planes, out_planes, kernel_size=3, stride=stride, padding=1, bias=False))
def cfg(depth):
depth_lst = [18, 34, 50, 101, 152]
assert (depth in depth_lst), "Error : Resnet depth should be either 18, 34, 50, 101, 152"
cf_dict = {
'18': (BasicBlock, [2,2,2,2]),
'34': (BasicBlock, [3,4,6,3]),
'50': (Bottleneck, [3,4,6,3]),
'101':(Bottleneck, [3,4,23,3]),
'152':(Bottleneck, [3,8,36,3]),
}
return cf_dict[str(depth)]
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = conv3x3(in_planes, planes, stride)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = conv3x3(planes, planes)
self.bn2 = nn.BatchNorm2d(planes)
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion * planes:
self.shortcut = nn.Sequential(
(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=False)),
nn.BatchNorm2d(self.expansion*planes)
)
def forward(self, x):
out = F.relu(self.bn1(self.conv1(x)))
out = self.bn2(self.conv2(out))
out += self.shortcut(x)
out = F.relu(out)
return out
class Bottleneck(nn.Module):
expansion = 4
def __init__(self, in_planes, planes, stride=1):
super(Bottleneck, self).__init__()
self.conv1 = (nn.Conv2d(in_planes, planes, kernel_size=1, bias=False))
self.conv2 = (nn.Conv2d(planes, planes, kernel_size=3, stride=stride, padding=1, bias=False))
self.conv3 = (nn.Conv2d(planes, self.expansion*planes, kernel_size=1, bias=False))
self.bn1 = nn.BatchNorm2d(planes)
self.bn2 = nn.BatchNorm2d(planes)
self.bn3 = nn.BatchNorm2d(self.expansion*planes)
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion*planes:
self.shortcut = nn.Sequential(
(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=False)),
)
def forward(self, x):
out = F.relu(self.bn1(self.conv1(x)))
out = F.relu(self.bn2(self.conv2(out)))
out = self.bn3(self.conv3(out))
out += self.shortcut(x)
out = F.relu(out)
return out
class ResNet(nn.Module):
def __init__(self, num_inputs, depth, num_outputs):
super(ResNet, self).__init__()
self.in_planes = 64
block, num_blocks = cfg(depth)
self.conv1 = conv3x3(num_inputs, 64, 2)
self.bn1 = nn.BatchNorm2d(64)
self.layer1 = self._make_layer(block, 64, num_blocks[0], stride=2)
self.layer2 = self._make_layer(block, 128, num_blocks[1], stride=2)
self.layer3 = self._make_layer(block, 256, num_blocks[2], stride=2)
self.layer4 = self._make_layer(block, 512, num_blocks[3], stride=2)
self.fc = nn.Linear(512, num_outputs)
def _make_layer(self, block, planes, num_blocks, stride):
strides = [stride] + [1]*(num_blocks-1)
layers = []
for stride in strides:
layers.append(block(self.in_planes, planes, stride))
self.in_planes = planes * block.expansion
return nn.Sequential(*layers)
def forward(self, x):
x = F.relu(self.bn1(self.conv1(x)))
x = self.layer1(x)
x = self.layer2(x)
x = self.layer3(x)
x = self.layer4(x)
x = F.avg_pool2d(x, 4)
x = x.view(x.size(0), -1)
x = self.fc(x)
x = torch.sigmoid(x)
return x
|
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.nn.utils.weight_norm as weightNorm
from torch.autograd import Variable
import sys
def conv3x3(in_planes, out_planes, stride=1):
return weightNorm(nn.Conv2d(in_planes, out_planes, kernel_size=3, stride=stride, padding=1, bias=True))
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
coord = torch.zeros([1, 2, 64, 64])
for i in range(64):
for j in range(64):
coord[0, 0, i, j] = i / 63.
coord[0, 1, i, j] = j / 63.
coord = coord.to(device)
class TReLU(nn.Module):
def __init__(self):
super(TReLU, self).__init__()
self.alpha = nn.Parameter(torch.FloatTensor(1), requires_grad=True)
self.alpha.data.fill_(0)
def forward(self, x):
x = F.relu(x - self.alpha) + self.alpha
return x
def cfg(depth):
depth_lst = [18, 34, 50, 101, 152]
assert (depth in depth_lst), "Error : Resnet depth should be either 18, 34, 50, 101, 152"
cf_dict = {
'18': (BasicBlock, [2,2,2,2]),
'34': (BasicBlock, [3,4,6,3]),
'50': (Bottleneck, [3,4,6,3]),
'101':(Bottleneck, [3,4,23,3]),
'152':(Bottleneck, [3,8,36,3]),
}
return cf_dict[str(depth)]
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = conv3x3(in_planes, planes, stride)
self.conv2 = conv3x3(planes, planes)
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion * planes:
self.shortcut = nn.Sequential(
weightNorm(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=True)),
)
self.relu_1 = TReLU()
self.relu_2 = TReLU()
def forward(self, x):
out = self.relu_1(self.conv1(x))
out = self.conv2(out)
out += self.shortcut(x)
out = self.relu_2(out)
return out
class Bottleneck(nn.Module):
expansion = 4
def __init__(self, in_planes, planes, stride=1):
super(Bottleneck, self).__init__()
self.conv1 = weightNorm(nn.Conv2d(in_planes, planes, kernel_size=1, bias=True))
self.conv2 = weightNorm(nn.Conv2d(planes, planes, kernel_size=3, stride=stride, padding=1, bias=True))
self.conv3 = weightNorm(nn.Conv2d(planes, self.expansion*planes, kernel_size=1, bias=True))
self.relu_1 = TReLU()
self.relu_2 = TReLU()
self.relu_3 = TReLU()
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion*planes:
self.shortcut = nn.Sequential(
weightNorm(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=True)),
)
def forward(self, x):
out = self.relu_1(self.conv1(x))
out = self.relu_2(self.conv2(out))
out = self.conv3(out)
out += self.shortcut(x)
out = self.relu_3(out)
return out
class ResNet_wobn(nn.Module):
def __init__(self, num_inputs, depth, num_outputs):
super(ResNet_wobn, self).__init__()
self.in_planes = 64
block, num_blocks = cfg(depth)
self.conv0 = conv3x3(num_inputs, 32, 2) # 64
self.layer1 = self._make_layer(block, 64, num_blocks[0], stride=2) # 32
self.layer2 = self._make_layer(block, 128, num_blocks[1], stride=2) # 16
self.layer3 = self._make_layer(block, 256, num_blocks[2], stride=2)
self.layer4 = self._make_layer(block, 512, num_blocks[3], stride=1)
self.conv4 = weightNorm(nn.Conv2d(512, 1, 1, 1, 0))
self.relu_1 = TReLU()
self.conv1 = weightNorm(nn.Conv2d(65 + 2, 64, 1, 1, 0))
self.conv2 = weightNorm(nn.Conv2d(64, 64, 1, 1, 0))
self.conv3 = weightNorm(nn.Conv2d(64, 32, 1, 1, 0))
self.relu_2 = TReLU()
self.relu_3 = TReLU()
self.relu_4 = TReLU()
def _make_layer(self, block, planes, num_blocks, stride):
strides = [stride] + [1]*(num_blocks-1)
layers = []
for stride in strides:
layers.append(block(self.in_planes, planes, stride))
self.in_planes = planes * block.expansion
return nn.Sequential(*layers)
def a2img(self, x):
tmp = coord.expand(x.shape[0], 2, 64, 64)
x = x.repeat(64, 64, 1, 1).permute(2, 3, 0, 1)
x = self.relu_2(self.conv1(torch.cat([x, tmp], 1)))
x = self.relu_3(self.conv2(x))
x = self.relu_4(self.conv3(x))
return x
def forward(self, input):
x, a = input
a = self.a2img(a)
x = self.relu_1(self.conv0(x))
x = torch.cat([x, a], 1)
x = self.layer1(x)
x = self.layer2(x)
x = self.layer3(x)
x = self.layer4(x)
x = self.conv4(x)
return x.view(x.size(0), 64)
|
import numpy as np
from utils.util import *
class Evaluator:
def __init__(self, args, writer):
self.validate_episodes = args.validate_episodes
self.max_step = args.max_step
self.env_batch = args.env_batch
self.writer = writer
self.log = 0
def __call__(self, env, policy, debug=False):
observation = None
for episode in range(self.validate_episodes):
# reset at the start of episode
observation = env.reset(test=True, episode=episode)
episode_steps = 0
episode_reward = 0.
assert observation is not None
# start episode
episode_reward = np.zeros(self.env_batch)
while (episode_steps < self.max_step or not self.max_step):
action = policy(observation)
observation, reward, done, (step_num) = env.step(action)
episode_reward += reward
episode_steps += 1
env.save_image(self.log, episode_steps)
dist = env.get_dist()
self.log += 1
return episode_reward, dist
|
import os
import torch
from torch.autograd import Variable
USE_CUDA = torch.cuda.is_available()
def prRed(prt): print("\033[91m {}\033[00m" .format(prt))
def prGreen(prt): print("\033[92m {}\033[00m" .format(prt))
def prYellow(prt): print("\033[93m {}\033[00m" .format(prt))
def prLightPurple(prt): print("\033[94m {}\033[00m" .format(prt))
def prPurple(prt): print("\033[95m {}\033[00m" .format(prt))
def prCyan(prt): print("\033[96m {}\033[00m" .format(prt))
def prLightGray(prt): print("\033[97m {}\033[00m" .format(prt))
def prBlack(prt): print("\033[98m {}\033[00m" .format(prt))
def to_numpy(var):
return var.cpu().data.numpy() if USE_CUDA else var.data.numpy()
def to_tensor(ndarray, device):
return torch.tensor(ndarray, dtype=torch.float, device=device)
def soft_update(target, source, tau):
for target_param, param in zip(target.parameters(), source.parameters()):
target_param.data.copy_(
target_param.data * (1.0 - tau) + param.data * tau
)
def hard_update(target, source):
for m1, m2 in zip(target.modules(), source.modules()):
m1._buffers = m2._buffers.copy()
for target_param, param in zip(target.parameters(), source.parameters()):
target_param.data.copy_(param.data)
def get_output_folder(parent_dir, env_name):
"""Return save folder.
Assumes folders in the parent_dir have suffix -run{run
number}. Finds the highest run number and sets the output folder
to that number + 1. This is just convenient so that if you run the
same script multiple times tensorboard can plot all of the results
on the same plots with different names.
Parameters
----------
parent_dir: str
Path of the directory containing all experiment runs.
Returns
-------
parent_dir/run_dir
Path to this run's save directory.
"""
os.makedirs(parent_dir, exist_ok=True)
experiment_id = 0
for folder_name in os.listdir(parent_dir):
if not os.path.isdir(os.path.join(parent_dir, folder_name)):
continue
try:
folder_name = int(folder_name.split('-run')[-1])
if folder_name > experiment_id:
experiment_id = folder_name
except:
pass
experiment_id += 1
parent_dir = os.path.join(parent_dir, env_name)
parent_dir = parent_dir + '-run{}'.format(experiment_id)
os.makedirs(parent_dir, exist_ok=True)
return parent_dir
|
import PIL
import scipy.misc
from io import BytesIO
import tensorboardX as tb
from tensorboardX.summary import Summary
class TensorBoard:
def __init__(self, model_dir):
self.summary_writer = tb.FileWriter(model_dir)
def add_image(self, tag, img, step):
summary = Summary()
bio = BytesIO()
if type(img) == str:
img = PIL.Image.open(img)
elif type(img) == PIL.Image.Image:
pass
else:
img = PIL.Image.fromarray(img)
img.save(bio, format="png")
image_summary = Summary.Image(encoded_image_string=bio.getvalue())
summary.value.add(tag=tag, image=image_summary)
self.summary_writer.add_summary(summary, global_step=step)
def add_scalar(self, tag, value, step):
summary = Summary(value=[Summary.Value(tag=tag, simple_value=value)])
self.summary_writer.add_summary(summary, global_step=step)
|
import sys
import json
import torch
import numpy as np
import argparse
import torchvision.transforms as transforms
import cv2
from .DRL.ddpg import decode
from .utils.util import *
from PIL import Image
# device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
aug = transforms.Compose([transforms.ToPILImage(),
transforms.RandomHorizontalFlip(), ])
width = 128
convas_area = width * width
img_train = []
img_test = []
train_num = 0
test_num = 0
class Paint:
def __init__(self, batch_size, max_step, device='cpu', Decoder=None):
self.batch_size = batch_size
self.max_step = max_step
self.action_space = (13)
self.observation_space = (self.batch_size, width, width, 7)
self.test = False
self.device = device
self.Decoder = Decoder
def load_data(self, images=None):
# CelebA
global train_num, test_num
for i in range(200000):
img_id = '%06d' % (i + 1)
# TorchBench created 2000 random tensors to load here.
if images is not None:
img = images[i % 2000]
else:
img = cv2.imread('./data/img_align_celeba/' + img_id + '.jpg', cv2.IMREAD_UNCHANGED)
img = cv2.resize(img, (width, width))
if i > 2000:
train_num += 1
img_train.append(img)
else:
test_num += 1
img_test.append(img)
def pre_data(self, id, test):
if test:
img = img_test[id]
else:
img = img_train[id]
return img
# Find out why aug and transpose turns random tensor [3, 128, 128] into [128, 3, 128] which fails.
# if not test:
# img = aug(img)
# img = np.asarray(img)
# return np.transpose(img, (2, 0, 1))
def reset(self, test=False, begin_num=False):
self.test = test
self.imgid = [0] * self.batch_size
self.gt = torch.zeros([self.batch_size, 3, width, width], dtype=torch.uint8).to(self.device)
for i in range(self.batch_size):
if test:
id = (i + begin_num) % test_num
else:
id = np.random.randint(train_num)
self.imgid[i] = id
# self.gt[i] = torch.tensor(self.pre_data(id, test))
self.gt[i] = self.pre_data(id, test).clone().detach().to(device=self.device)
self.tot_reward = ((self.gt.float() / 255) ** 2).mean(1).mean(1).mean(1)
self.stepnum = 0
self.canvas = torch.zeros([self.batch_size, 3, width, width], dtype=torch.uint8).to(self.device)
self.lastdis = self.ini_dis = self.cal_dis()
return self.observation()
def observation(self):
# canvas B * 3 * width * width
# gt B * 3 * width * width
# T B * 1 * width * width
ob = []
T = torch.ones([self.batch_size, 1, width, width], dtype=torch.uint8) * self.stepnum
return torch.cat((self.canvas, self.gt, T.to(self.device)), 1) # canvas, img, T
def cal_trans(self, s, t):
return (s.transpose(0, 3) * t).transpose(0, 3)
def step(self, action):
self.canvas = (decode(action, self.canvas.float() / 255, self.Decoder) * 255).byte()
self.stepnum += 1
ob = self.observation()
done = (self.stepnum == self.max_step)
reward = self.cal_reward() # np.array([0.] * self.batch_size)
return ob.detach(), reward, np.array([done] * self.batch_size), None
def cal_dis(self):
return (((self.canvas.float() - self.gt.float()) / 255) ** 2).mean(1).mean(1).mean(1)
def cal_reward(self):
dis = self.cal_dis()
reward = (self.lastdis - dis) / (self.ini_dis + 1e-8)
self.lastdis = dis
return to_numpy(reward)
|
import os
import cv2
import torch
import numpy as np
import argparse
import torch.nn as nn
import torch.nn.functional as F
from DRL.actor import *
from Renderer.stroke_gen import *
from Renderer.model import *
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
width = 128
parser = argparse.ArgumentParser(description='Learning to Paint')
parser.add_argument('--max_step', default=40, type=int, help='max length for episode')
parser.add_argument('--actor', default='./model/Paint-run1/actor.pkl', type=str, help='Actor model')
parser.add_argument('--renderer', default='./renderer.pkl', type=str, help='renderer model')
parser.add_argument('--img', default='image/test.png', type=str, help='test image')
parser.add_argument('--imgid', default=0, type=int, help='set begin number for generated image')
parser.add_argument('--divide', default=4, type=int, help='divide the target image to get better resolution')
args = parser.parse_args()
canvas_cnt = args.divide * args.divide
T = torch.ones([1, 1, width, width], dtype=torch.float32).to(device)
img = cv2.imread(args.img, cv2.IMREAD_COLOR)
origin_shape = (img.shape[1], img.shape[0])
coord = torch.zeros([1, 2, width, width])
for i in range(width):
for j in range(width):
coord[0, 0, i, j] = i / (width - 1.)
coord[0, 1, i, j] = j / (width - 1.)
coord = coord.to(device) # Coordconv
Decoder = FCN()
Decoder.load_state_dict(torch.load(args.renderer))
def decode(x, canvas): # b * (10 + 3)
x = x.view(-1, 10 + 3)
stroke = 1 - Decoder(x[:, :10])
stroke = stroke.view(-1, width, width, 1)
color_stroke = stroke * x[:, -3:].view(-1, 1, 1, 3)
stroke = stroke.permute(0, 3, 1, 2)
color_stroke = color_stroke.permute(0, 3, 1, 2)
stroke = stroke.view(-1, 5, 1, width, width)
color_stroke = color_stroke.view(-1, 5, 3, width, width)
res = []
for i in range(5):
canvas = canvas * (1 - stroke[:, i]) + color_stroke[:, i]
res.append(canvas)
return canvas, res
def small2large(x):
# (d * d, width, width) -> (d * width, d * width)
x = x.reshape(args.divide, args.divide, width, width, -1)
x = np.transpose(x, (0, 2, 1, 3, 4))
x = x.reshape(args.divide * width, args.divide * width, -1)
return x
def large2small(x):
# (d * width, d * width) -> (d * d, width, width)
x = x.reshape(args.divide, width, args.divide, width, 3)
x = np.transpose(x, (0, 2, 1, 3, 4))
x = x.reshape(canvas_cnt, width, width, 3)
return x
def smooth(img):
def smooth_pix(img, tx, ty):
if tx == args.divide * width - 1 or ty == args.divide * width - 1 or tx == 0 or ty == 0:
return img
img[tx, ty] = (img[tx, ty] + img[tx + 1, ty] + img[tx, ty + 1] + img[tx - 1, ty] + img[tx, ty - 1] + img[tx + 1, ty - 1] + img[tx - 1, ty + 1] + img[tx - 1, ty - 1] + img[tx + 1, ty + 1]) / 9
return img
for p in range(args.divide):
for q in range(args.divide):
x = p * width
y = q * width
for k in range(width):
img = smooth_pix(img, x + k, y + width - 1)
if q != args.divide - 1:
img = smooth_pix(img, x + k, y + width)
for k in range(width):
img = smooth_pix(img, x + width - 1, y + k)
if p != args.divide - 1:
img = smooth_pix(img, x + width, y + k)
return img
def save_img(res, imgid, divide=False):
output = res.detach().cpu().numpy() # d * d, 3, width, width
output = np.transpose(output, (0, 2, 3, 1))
if divide:
output = small2large(output)
output = smooth(output)
else:
output = output[0]
output = (output * 255).astype('uint8')
output = cv2.resize(output, origin_shape)
cv2.imwrite('output/generated' + str(imgid) + '.png', output)
actor = ResNet(9, 18, 65) # action_bundle = 5, 65 = 5 * 13
actor.load_state_dict(torch.load(args.actor))
actor = actor.to(device).eval()
Decoder = Decoder.to(device).eval()
canvas = torch.zeros([1, 3, width, width]).to(device)
patch_img = cv2.resize(img, (width * args.divide, width * args.divide))
patch_img = large2small(patch_img)
patch_img = np.transpose(patch_img, (0, 3, 1, 2))
patch_img = torch.tensor(patch_img).to(device).float() / 255.
img = cv2.resize(img, (width, width))
img = img.reshape(1, width, width, 3)
img = np.transpose(img, (0, 3, 1, 2))
img = torch.tensor(img).to(device).float() / 255.
os.system('mkdir output')
with torch.no_grad():
if args.divide != 1:
args.max_step = args.max_step // 2
for i in range(args.max_step):
stepnum = T * i / args.max_step
actions = actor(torch.cat([canvas, img, stepnum, coord], 1))
canvas, res = decode(actions, canvas)
print('canvas step {}, L2Loss = {}'.format(i, ((canvas - img) ** 2).mean()))
for j in range(5):
save_img(res[j], args.imgid)
args.imgid += 1
if args.divide != 1:
canvas = canvas[0].detach().cpu().numpy()
canvas = np.transpose(canvas, (1, 2, 0))
canvas = cv2.resize(canvas, (width * args.divide, width * args.divide))
canvas = large2small(canvas)
canvas = np.transpose(canvas, (0, 3, 1, 2))
canvas = torch.tensor(canvas).to(device).float()
coord = coord.expand(canvas_cnt, 2, width, width)
T = T.expand(canvas_cnt, 1, width, width)
for i in range(args.max_step):
stepnum = T * i / args.max_step
actions = actor(torch.cat([canvas, patch_img, stepnum, coord], 1))
canvas, res = decode(actions, canvas)
print('divided canvas step {}, L2Loss = {}'.format(i, ((canvas - patch_img) ** 2).mean()))
for j in range(5):
save_img(res[j], args.imgid, True)
args.imgid += 1
|
#!/usr/bin/env python3
import cv2
import random
import numpy as np
import argparse
from DRL.evaluator import Evaluator
from utils.util import *
from utils.tensorboard import TensorBoard
import time
exp = os.path.abspath('.').split('/')[-1]
writer = TensorBoard('../train_log/{}'.format(exp))
os.system('ln -sf ../train_log/{} ./log'.format(exp))
os.system('mkdir ./model')
def train(agent, env, evaluate):
train_times = args.train_times
env_batch = args.env_batch
validate_interval = args.validate_interval
max_step = args.max_step
debug = args.debug
episode_train_times = args.episode_train_times
resume = args.resume
output = args.output
time_stamp = time.time()
step = episode = episode_steps = 0
tot_reward = 0.
observation = None
noise_factor = args.noise_factor
while step <= train_times:
step += 1
episode_steps += 1
# reset if it is the start of episode
if observation is None:
observation = env.reset()
agent.reset(observation, noise_factor)
action = agent.select_action(observation, noise_factor=noise_factor)
observation, reward, done, _ = env.step(action)
agent.observe(reward, observation, done, step)
if (episode_steps >= max_step and max_step):
if step > args.warmup:
# [optional] evaluate
if episode > 0 and validate_interval > 0 and episode % validate_interval == 0:
reward, dist = evaluate(env, agent.select_action, debug=debug)
if debug: prRed('Step_{:07d}: mean_reward:{:.3f} mean_dist:{:.3f} var_dist:{:.3f}'.format(step - 1, np.mean(reward), np.mean(dist), np.var(dist)))
writer.add_scalar('validate/mean_reward', np.mean(reward), step)
writer.add_scalar('validate/mean_dist', np.mean(dist), step)
writer.add_scalar('validate/var_dist', np.var(dist), step)
agent.save_model(output)
train_time_interval = time.time() - time_stamp
time_stamp = time.time()
tot_Q = 0.
tot_value_loss = 0.
if step > args.warmup:
if step < 10000 * max_step:
lr = (3e-4, 1e-3)
elif step < 20000 * max_step:
lr = (1e-4, 3e-4)
else:
lr = (3e-5, 1e-4)
for i in range(episode_train_times):
Q, value_loss = agent.update_policy(lr)
tot_Q += Q.data.cpu().numpy()
tot_value_loss += value_loss.data.cpu().numpy()
writer.add_scalar('train/critic_lr', lr[0], step)
writer.add_scalar('train/actor_lr', lr[1], step)
writer.add_scalar('train/Q', tot_Q / episode_train_times, step)
writer.add_scalar('train/critic_loss', tot_value_loss / episode_train_times, step)
if debug: prBlack('#{}: steps:{} interval_time:{:.2f} train_time:{:.2f}' \
.format(episode, step, train_time_interval, time.time()-time_stamp))
time_stamp = time.time()
# reset
observation = None
episode_steps = 0
episode += 1
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Learning to Paint')
# hyper-parameter
parser.add_argument('--warmup', default=400, type=int, help='timestep without training but only filling the replay memory')
parser.add_argument('--discount', default=0.95**5, type=float, help='discount factor')
parser.add_argument('--batch_size', default=96, type=int, help='minibatch size')
parser.add_argument('--rmsize', default=800, type=int, help='replay memory size')
parser.add_argument('--env_batch', default=96, type=int, help='concurrent environment number')
parser.add_argument('--tau', default=0.001, type=float, help='moving average for target network')
parser.add_argument('--max_step', default=40, type=int, help='max length for episode')
parser.add_argument('--noise_factor', default=0, type=float, help='noise level for parameter space noise')
parser.add_argument('--validate_interval', default=50, type=int, help='how many episodes to perform a validation')
parser.add_argument('--validate_episodes', default=5, type=int, help='how many episode to perform during validation')
parser.add_argument('--train_times', default=2000000, type=int, help='total traintimes')
parser.add_argument('--episode_train_times', default=10, type=int, help='train times for each episode')
parser.add_argument('--resume', default=None, type=str, help='Resuming model path for testing')
parser.add_argument('--output', default='./model', type=str, help='Resuming model path for testing')
parser.add_argument('--debug', dest='debug', action='store_true', help='print some info')
parser.add_argument('--seed', default=1234, type=int, help='random seed')
args = parser.parse_args()
args.output = get_output_folder(args.output, "Paint")
np.random.seed(args.seed)
torch.manual_seed(args.seed)
if torch.cuda.is_available(): torch.cuda.manual_seed_all(args.seed)
random.seed(args.seed)
torch.backends.cudnn.deterministic = False
torch.backends.cudnn.benchmark = True
from DRL.ddpg import DDPG
from DRL.multi import fastenv
fenv = fastenv(args.max_step, args.env_batch, writer)
agent = DDPG(args.batch_size, args.env_batch, args.max_step, \
args.tau, args.discount, args.rmsize, \
writer, args.resume, args.output)
evaluate = Evaluator(args, writer)
print('observation_space', fenv.observation_space, 'action_space', fenv.action_space)
train(agent, fenv, evaluate)
|
import cv2
import torch
import numpy as np
import sys
import torch.nn as nn
import torch.nn.functional as F
from utils.tensorboard import TensorBoard
from Renderer.model import FCN
from Renderer.stroke_gen import *
#writer = TensorBoard("../train_log/")
import torch.optim as optim
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--debug', metavar='fn', default="", help="Dump outputs into file")
parser.add_argument('--script', default=False, help="Script the model")
args = parser.parse_args()
torch.manual_seed(1337)
np.random.seed(1337)
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
criterion = nn.MSELoss()
net = FCN()
if args.script:
net = torch.jit.script(net)
optimizer = optim.Adam(net.parameters(), lr=3e-6)
batch_size = 64
use_cuda = torch.cuda.is_available()
step = 0
def save_model():
if use_cuda:
net.cpu()
torch.save(net.state_dict(), "../renderer.pkl")
if use_cuda:
net.cuda()
def load_weights():
pretrained_dict = torch.load("../renderer.pkl")
model_dict = net.state_dict()
pretrained_dict = {k: v for k, v in pretrained_dict.items() if k in model_dict}
model_dict.update(pretrained_dict)
net.load_state_dict(model_dict)
#load_weights()
while step < 100:
net.train()
train_batch = []
ground_truth = []
for i in range(batch_size):
f = np.random.uniform(0, 1, 10)
train_batch.append(f)
ground_truth.append(draw(f))
train_batch = torch.tensor(train_batch).float()
ground_truth = torch.tensor(ground_truth).float()
if use_cuda:
net = net.cuda()
train_batch = train_batch.cuda()
ground_truth = ground_truth.cuda()
gen = net(train_batch)
optimizer.zero_grad()
loss = criterion(gen, ground_truth)
loss.backward()
optimizer.step()
print(step, loss.item())
if step < 200000:
lr = 1e-4
elif step < 400000:
lr = 1e-5
else:
lr = 1e-6
for param_group in optimizer.param_groups:
param_group["lr"] = lr
#writer.add_scalar("train/loss", loss.item(), step)
if step % 100 == 0:
net.eval()
gen = net(train_batch)
loss = criterion(gen, ground_truth)
#writer.add_scalar("val/loss", loss.item(), step)
for i in range(32):
G = gen[i].cpu().data.numpy()
GT = ground_truth[i].cpu().data.numpy()
#writer.add_image("train/gen{}.png".format(i), G, step)
#writer.add_image("train/ground_truth{}.png".format(i), GT, step)
if step % 1000 == 0:
save_model()
step += 1
if args.debug:
torch.save(gen, args.debug)
|
import cv2
import numpy as np
def normal(x, width):
return (int)(x * (width - 1) + 0.5)
def draw(f, width=128):
x0, y0, x1, y1, x2, y2, z0, z2, w0, w2 = f
x1 = x0 + (x2 - x0) * x1
y1 = y0 + (y2 - y0) * y1
x0 = normal(x0, width * 2)
x1 = normal(x1, width * 2)
x2 = normal(x2, width * 2)
y0 = normal(y0, width * 2)
y1 = normal(y1, width * 2)
y2 = normal(y2, width * 2)
z0 = (int)(1 + z0 * width // 2)
z2 = (int)(1 + z2 * width // 2)
canvas = np.zeros([width * 2, width * 2]).astype('float32')
tmp = 1. / 100
for i in range(100):
t = i * tmp
x = (int)((1-t) * (1-t) * x0 + 2 * t * (1-t) * x1 + t * t * x2)
y = (int)((1-t) * (1-t) * y0 + 2 * t * (1-t) * y1 + t * t * y2)
z = (int)((1-t) * z0 + t * z2)
w = (1-t) * w0 + t * w2
cv2.circle(canvas, (y, x), z, w, -1)
return 1 - cv2.resize(canvas, dsize=(width, width))
|
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.nn.utils.weight_norm as weightNorm
class FCN(nn.Module):
def __init__(self):
super(FCN, self).__init__()
self.fc1 = (nn.Linear(10, 512))
self.fc2 = (nn.Linear(512, 1024))
self.fc3 = (nn.Linear(1024, 2048))
self.fc4 = (nn.Linear(2048, 4096))
self.conv1 = (nn.Conv2d(16, 32, 3, 1, 1))
self.conv2 = (nn.Conv2d(32, 32, 3, 1, 1))
self.conv3 = (nn.Conv2d(8, 16, 3, 1, 1))
self.conv4 = (nn.Conv2d(16, 16, 3, 1, 1))
self.conv5 = (nn.Conv2d(4, 8, 3, 1, 1))
self.conv6 = (nn.Conv2d(8, 4, 3, 1, 1))
self.pixel_shuffle = nn.PixelShuffle(2)
def forward(self, x):
x = F.relu(self.fc1(x))
x = F.relu(self.fc2(x))
x = F.relu(self.fc3(x))
x = F.relu(self.fc4(x))
x = x.view(-1, 16, 16, 16)
x = F.relu(self.conv1(x))
x = self.pixel_shuffle(self.conv2(x))
x = F.relu(self.conv3(x))
x = self.pixel_shuffle(self.conv4(x))
x = F.relu(self.conv5(x))
x = self.pixel_shuffle(self.conv6(x))
x = torch.sigmoid(x)
return 1 - x.view(-1, 128, 128)
|
import torch
import torch.nn as nn
import numpy as np
from torch.optim import Adam, SGD
from torch import autograd
from torch.autograd import Variable
import torch.nn.functional as F
from torch.autograd import grad as torch_grad
import torch.nn.utils.weight_norm as weightNorm
from ..utils.util import *
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
dim = 128
LAMBDA = 10 # Gradient penalty lambda hyperparameter
class TReLU(nn.Module):
def __init__(self):
super(TReLU, self).__init__()
self.alpha = nn.Parameter(torch.FloatTensor(1), requires_grad=True)
self.alpha.data.fill_(0)
def forward(self, x):
x = F.relu(x - self.alpha) + self.alpha
return x
class Discriminator(nn.Module):
def __init__(self):
super(Discriminator, self).__init__()
self.conv0 = weightNorm(nn.Conv2d(6, 16, 5, 2, 2))
self.conv1 = weightNorm(nn.Conv2d(16, 32, 5, 2, 2))
self.conv2 = weightNorm(nn.Conv2d(32, 64, 5, 2, 2))
self.conv3 = weightNorm(nn.Conv2d(64, 128, 5, 2, 2))
self.conv4 = weightNorm(nn.Conv2d(128, 1, 5, 2, 2))
self.relu0 = TReLU()
self.relu1 = TReLU()
self.relu2 = TReLU()
self.relu3 = TReLU()
def forward(self, x):
x = self.conv0(x)
x = self.relu0(x)
x = self.conv1(x)
x = self.relu1(x)
x = self.conv2(x)
x = self.relu2(x)
x = self.conv3(x)
x = self.relu3(x)
x = self.conv4(x)
x = F.avg_pool2d(x, 4)
x = x.view(-1, 1)
return x
netD = Discriminator()
target_netD = Discriminator()
netD = netD.to(device)
target_netD = target_netD.to(device)
hard_update(target_netD, netD)
optimizerD = Adam(netD.parameters(), lr=3e-4, betas=(0.5, 0.999))
def cal_gradient_penalty(netD, real_data, fake_data, batch_size):
alpha = torch.rand(batch_size, 1)
alpha = alpha.expand(batch_size, int(real_data.nelement()/batch_size)).contiguous()
alpha = alpha.view(batch_size, 6, dim, dim)
alpha = alpha.to(device)
fake_data = fake_data.view(batch_size, 6, dim, dim)
interpolates = Variable(alpha * real_data.data + ((1 - alpha) * fake_data.data), requires_grad=True)
disc_interpolates = netD(interpolates)
gradients = autograd.grad(disc_interpolates, interpolates,
grad_outputs=torch.ones(disc_interpolates.size()).to(device),
create_graph=True, retain_graph=True)[0]
gradients = gradients.view(gradients.size(0), -1)
gradient_penalty = ((gradients.norm(2, dim=1) - 1) ** 2).mean() * LAMBDA
return gradient_penalty
def cal_reward(fake_data, real_data):
return target_netD(torch.cat([real_data, fake_data], 1))
def save_gan(path):
netD.cpu()
torch.save(netD.state_dict(),'{}/wgan.pkl'.format(path))
netD.to(device)
def load_gan(path):
netD.load_state_dict(torch.load('{}/wgan.pkl'.format(path)))
def update(fake_data, real_data):
fake_data = fake_data.detach()
real_data = real_data.detach()
fake = torch.cat([real_data, fake_data], 1)
real = torch.cat([real_data, real_data], 1)
D_real = netD(real)
D_fake = netD(fake)
gradient_penalty = cal_gradient_penalty(netD, real, fake, real.shape[0])
optimizerD.zero_grad()
D_cost = D_fake.mean() - D_real.mean() + gradient_penalty
D_cost.backward()
optimizerD.step()
soft_update(target_netD, netD, 0.001)
return D_fake.mean(), D_real.mean(), gradient_penalty
|
import cv2
import torch
import numpy as np
from ..env import Paint
from ..utils.util import *
# device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
class fastenv():
def __init__(self,
max_episode_length=10, env_batch=64,
writer=None, images=None, device="cpu", Decoder=None):
self.max_episode_length = max_episode_length
self.env_batch = env_batch
self.device = device
self.Decoder = Decoder
self.env = Paint(self.env_batch, self.max_episode_length, device=self.device, Decoder=self.Decoder)
self.env.load_data(images)
self.observation_space = self.env.observation_space
self.action_space = self.env.action_space
self.writer = writer
self.test = False
self.log = 0
def save_image(self, log, step):
for i in range(self.env_batch):
if self.env.imgid[i] <= 10:
canvas = cv2.cvtColor((to_numpy(self.env.canvas[i].permute(1, 2, 0))), cv2.COLOR_BGR2RGB)
self.writer.add_image('{}/canvas_{}.png'.format(str(self.env.imgid[i]), str(step)), canvas, log)
if step == self.max_episode_length:
for i in range(self.env_batch):
if self.env.imgid[i] < 50:
gt = cv2.cvtColor((to_numpy(self.env.gt[i].permute(1, 2, 0))), cv2.COLOR_BGR2RGB)
canvas = cv2.cvtColor((to_numpy(self.env.canvas[i].permute(1, 2, 0))), cv2.COLOR_BGR2RGB)
self.writer.add_image(str(self.env.imgid[i]) + '/_target.png', gt, log)
self.writer.add_image(str(self.env.imgid[i]) + '/_canvas.png', canvas, log)
def step(self, action):
with torch.no_grad():
ob, r, d, _ = self.env.step(torch.tensor(action).to(self.device))
if d[0]:
if not self.test:
self.dist = self.get_dist()
for i in range(self.env_batch):
if self.writer:
self.writer.add_scalar('train/dist', self.dist[i], self.log)
self.log += 1
return ob, r, d, _
def get_dist(self):
return to_numpy((((self.env.gt.float() - self.env.canvas.float()) / 255) ** 2).mean(1).mean(1).mean(1))
def reset(self, test=False, episode=0):
self.test = test
ob = self.env.reset(self.test, episode * self.env_batch)
return ob
|
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
from torch.optim import Adam, SGD
from ..Renderer.model import *
from .rpm import rpm
from .actor import *
from .critic import *
from .wgan import *
from ..utils.util import *
# device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
# Instead of having these as globals, create Decoder inside TB model and criterion in this DDPG model.
# criterion = nn.MSELoss()
# Use default Renderer instead of importing one.
# Decoder = FCN()
# Decoder.load_state_dict(torch.load('../renderer.pkl'))
def decode(x, canvas, Decoder): # b * (10 + 3)
x = x.view(-1, 10 + 3)
stroke = 1 - Decoder(x[:, :10])
stroke = stroke.view(-1, 128, 128, 1)
color_stroke = stroke * x[:, -3:].view(-1, 1, 1, 3)
stroke = stroke.permute(0, 3, 1, 2)
color_stroke = color_stroke.permute(0, 3, 1, 2)
stroke = stroke.view(-1, 5, 1, 128, 128)
color_stroke = color_stroke.view(-1, 5, 3, 128, 128)
for i in range(5):
canvas = canvas * (1 - stroke[:, i]) + color_stroke[:, i]
return canvas
def cal_trans(s, t):
return (s.transpose(0, 3) * t).transpose(0, 3)
class DDPG(object):
def __init__(self, batch_size=64, env_batch=1, max_step=40,
tau=0.001, discount=0.9, rmsize=800,
writer=None, resume=None, output_path=None, device='cpu', Decoder=None):
self.max_step = max_step
self.env_batch = env_batch
self.batch_size = batch_size
self.device = device
self.actor = ResNet(9, 18, 65) # target, canvas, stepnum, coordconv 3 + 3 + 1 + 2
self.actor_target = ResNet(9, 18, 65)
self.critic = ResNet_wobn(3 + 9, 18, 1) # add the last canvas for better prediction
self.critic_target = ResNet_wobn(3 + 9, 18, 1)
self.criterion = nn.MSELoss()
self.Decoder = Decoder
self.actor_optim = Adam(self.actor.parameters(), lr=1e-2)
self.critic_optim = Adam(self.critic.parameters(), lr=1e-2)
if resume is not None:
self.load_weights(resume)
hard_update(self.actor_target, self.actor)
hard_update(self.critic_target, self.critic)
# Create replay buffer
self.memory = rpm(rmsize * max_step)
# Hyper-parameters
self.tau = tau
self.discount = discount
# Tensorboard
self.writer = writer
self.log = 0
self.coord = torch.zeros([1, 2, 128, 128])
for i in range(128):
for j in range(128):
self.coord[0, 0, i, j] = i / 127.
self.coord[0, 1, i, j] = j / 127.
self.coord = self.coord.to(self.device)
self.state = [None] * self.env_batch # Most recent state
self.action = [None] * self.env_batch # Most recent action
self.choose_device()
def play(self, state, target=False):
state = torch.cat((state[:, :6].float() / 255, state[:, 6:7].float() / self.max_step,
self.coord.expand(state.shape[0], 2, 128, 128)), 1)
if target:
return self.actor_target(state)
else:
return self.actor(state)
def update_gan(self, state):
canvas = state[:, :3]
gt = state[:, 3 : 6]
fake, real, penal = update(canvas.float() / 255, gt.float() / 255)
if self.log % 20 == 0 and self.writer:
self.writer.add_scalar('train/gan_fake', fake, self.log)
self.writer.add_scalar('train/gan_real', real, self.log)
self.writer.add_scalar('train/gan_penal', penal, self.log)
def evaluate(self, state, action, target=False):
T = state[:, 6 : 7]
gt = state[:, 3 : 6].float() / 255
canvas0 = state[:, :3].float() / 255
canvas1 = decode(action, canvas0, self.Decoder)
gan_reward = cal_reward(canvas1, gt) - cal_reward(canvas0, gt)
# L2_reward = ((canvas0 - gt) ** 2).mean(1).mean(1).mean(1) - ((canvas1 - gt) ** 2).mean(1).mean(1).mean(1)
coord_ = self.coord.expand(state.shape[0], 2, 128, 128)
merged_state = torch.cat([canvas0, canvas1, gt, (T + 1).float() / self.max_step, coord_], 1)
# canvas0 is not necessarily added
if target:
Q = self.critic_target(merged_state)
return (Q + gan_reward), gan_reward
else:
Q = self.critic(merged_state)
if self.log % 20 == 0 and self.writer:
self.writer.add_scalar('train/expect_reward', Q.mean(), self.log)
self.writer.add_scalar('train/gan_reward', gan_reward.mean(), self.log)
return (Q + gan_reward), gan_reward
def update_policy(self, lr):
self.log += 1
for param_group in self.critic_optim.param_groups:
param_group['lr'] = lr[0]
for param_group in self.actor_optim.param_groups:
param_group['lr'] = lr[1]
# Sample batch
state, action, reward, \
next_state, terminal = self.memory.sample_batch(self.batch_size, self.device)
self.update_gan(next_state)
with torch.no_grad():
next_action = self.play(next_state, True)
target_q, _ = self.evaluate(next_state, next_action, True)
target_q = self.discount * ((1 - terminal.float()).view(-1, 1)) * target_q
cur_q, step_reward = self.evaluate(state, action)
target_q += step_reward.detach()
value_loss = self.criterion(cur_q, target_q)
self.critic.zero_grad()
value_loss.backward(retain_graph=True)
self.critic_optim.step()
action = self.play(state)
pre_q, _ = self.evaluate(state.detach(), action)
policy_loss = -pre_q.mean()
self.actor.zero_grad()
policy_loss.backward(retain_graph=True)
self.actor_optim.step()
# Target update
soft_update(self.actor_target, self.actor, self.tau)
soft_update(self.critic_target, self.critic, self.tau)
return -policy_loss, value_loss
def observe(self, reward, state, done, step):
s0 = torch.tensor(self.state, device='cpu')
a = to_tensor(self.action, "cpu")
r = to_tensor(reward, "cpu")
s1 = torch.tensor(state, device='cpu')
d = to_tensor(done.astype('float32'), "cpu")
for i in range(self.env_batch):
self.memory.append([s0[i], a[i], r[i], s1[i], d[i]])
self.state = state
def noise_action(self, noise_factor, state, action):
noise = np.zeros(action.shape)
for i in range(self.env_batch):
action[i] = action[i] + np.random.normal(0, self.noise_level[i], action.shape[1:]).astype('float32')
return np.clip(action.astype('float32'), 0, 1)
def select_action(self, state, return_fix=False, noise_factor=0):
self.eval()
with torch.no_grad():
action = self.play(state)
action = to_numpy(action)
if noise_factor > 0:
action = self.noise_action(noise_factor, state, action)
self.train()
self.action = action
if return_fix:
return action
return self.action
def reset(self, obs, factor):
self.state = obs
self.noise_level = np.random.uniform(0, factor, self.env_batch)
def load_weights(self, path):
if path is None:
return
self.actor.load_state_dict(torch.load('{}/actor.pkl'.format(path)))
self.critic.load_state_dict(torch.load('{}/critic.pkl'.format(path)))
load_gan(path)
def save_model(self, path):
self.actor.cpu()
self.critic.cpu()
torch.save(self.actor.state_dict(), '{}/actor.pkl'.format(path))
torch.save(self.critic.state_dict(), '{}/critic.pkl'.format(path))
save_gan(path)
self.choose_device()
def eval(self):
self.actor.eval()
self.actor_target.eval()
self.critic.eval()
self.critic_target.eval()
def train(self):
self.actor.train()
self.actor_target.train()
self.critic.train()
self.critic_target.train()
def choose_device(self):
self.Decoder.to(self.device)
self.actor.to(self.device)
self.actor_target.to(self.device)
self.critic.to(self.device)
self.critic_target.to(self.device)
|
# from collections import deque
import numpy as np
import random
import torch
import pickle as pickle
class rpm(object):
# replay memory
def __init__(self, buffer_size):
self.buffer_size = buffer_size
self.buffer = []
self.index = 0
def append(self, obj):
if self.size() > self.buffer_size:
print('buffer size larger than set value, trimming...')
self.buffer = self.buffer[(self.size() - self.buffer_size):]
elif self.size() == self.buffer_size:
self.buffer[self.index] = obj
self.index += 1
self.index %= self.buffer_size
else:
self.buffer.append(obj)
def size(self):
return len(self.buffer)
def sample_batch(self, batch_size, device, only_state=False):
if self.size() < batch_size:
batch = random.sample(self.buffer, self.size())
else:
batch = random.sample(self.buffer, batch_size)
if only_state:
res = torch.stack(tuple(item[3] for item in batch), dim=0)
return res.to(device)
else:
item_count = 5
res = []
for i in range(5):
k = torch.stack(tuple(item[i] for item in batch), dim=0)
res.append(k.to(device))
return res[0], res[1], res[2], res[3], res[4]
|
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.nn.utils.weight_norm as weightNorm
from torch.autograd import Variable
import sys
def conv3x3(in_planes, out_planes, stride=1):
return (nn.Conv2d(in_planes, out_planes, kernel_size=3, stride=stride, padding=1, bias=False))
def cfg(depth):
depth_lst = [18, 34, 50, 101, 152]
assert (depth in depth_lst), "Error : Resnet depth should be either 18, 34, 50, 101, 152"
cf_dict = {
'18': (BasicBlock, [2,2,2,2]),
'34': (BasicBlock, [3,4,6,3]),
'50': (Bottleneck, [3,4,6,3]),
'101':(Bottleneck, [3,4,23,3]),
'152':(Bottleneck, [3,8,36,3]),
}
return cf_dict[str(depth)]
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = conv3x3(in_planes, planes, stride)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = conv3x3(planes, planes)
self.bn2 = nn.BatchNorm2d(planes)
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion * planes:
self.shortcut = nn.Sequential(
(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=False)),
nn.BatchNorm2d(self.expansion*planes)
)
def forward(self, x):
out = F.relu(self.bn1(self.conv1(x)))
out = self.bn2(self.conv2(out))
out += self.shortcut(x)
out = F.relu(out)
return out
class Bottleneck(nn.Module):
expansion = 4
def __init__(self, in_planes, planes, stride=1):
super(Bottleneck, self).__init__()
self.conv1 = (nn.Conv2d(in_planes, planes, kernel_size=1, bias=False))
self.conv2 = (nn.Conv2d(planes, planes, kernel_size=3, stride=stride, padding=1, bias=False))
self.conv3 = (nn.Conv2d(planes, self.expansion*planes, kernel_size=1, bias=False))
self.bn1 = nn.BatchNorm2d(planes)
self.bn2 = nn.BatchNorm2d(planes)
self.bn3 = nn.BatchNorm2d(self.expansion*planes)
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion*planes:
self.shortcut = nn.Sequential(
(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=False)),
)
def forward(self, x):
out = F.relu(self.bn1(self.conv1(x)))
out = F.relu(self.bn2(self.conv2(out)))
out = self.bn3(self.conv3(out))
out += self.shortcut(x)
out = F.relu(out)
return out
class ResNet(nn.Module):
def __init__(self, num_inputs, depth, num_outputs):
super(ResNet, self).__init__()
self.in_planes = 64
block, num_blocks = cfg(depth)
self.conv1 = conv3x3(num_inputs, 64, 2)
self.bn1 = nn.BatchNorm2d(64)
self.layer1 = self._make_layer(block, 64, num_blocks[0], stride=2)
self.layer2 = self._make_layer(block, 128, num_blocks[1], stride=2)
self.layer3 = self._make_layer(block, 256, num_blocks[2], stride=2)
self.layer4 = self._make_layer(block, 512, num_blocks[3], stride=2)
self.fc = nn.Linear(512, num_outputs)
def _make_layer(self, block, planes, num_blocks, stride):
strides = [stride] + [1]*(num_blocks-1)
layers = []
for stride in strides:
layers.append(block(self.in_planes, planes, stride))
self.in_planes = planes * block.expansion
return nn.Sequential(*layers)
def forward(self, x):
x = F.relu(self.bn1(self.conv1(x)))
x = self.layer1(x)
x = self.layer2(x)
x = self.layer3(x)
x = self.layer4(x)
x = F.avg_pool2d(x, 4)
x = x.view(x.size(0), -1)
x = self.fc(x)
x = torch.sigmoid(x)
return x
|
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.nn.utils.weight_norm as weightNorm
from torch.autograd import Variable
import sys
def conv3x3(in_planes, out_planes, stride=1):
return weightNorm(nn.Conv2d(in_planes, out_planes, kernel_size=3, stride=stride, padding=1, bias=True))
class TReLU(nn.Module):
def __init__(self):
super(TReLU, self).__init__()
self.alpha = nn.Parameter(torch.FloatTensor(1), requires_grad=True)
self.alpha.data.fill_(0)
def forward(self, x):
x = F.relu(x - self.alpha) + self.alpha
return x
def cfg(depth):
depth_lst = [18, 34, 50, 101, 152]
assert (depth in depth_lst), "Error : Resnet depth should be either 18, 34, 50, 101, 152"
cf_dict = {
'18': (BasicBlock, [2,2,2,2]),
'34': (BasicBlock, [3,4,6,3]),
'50': (Bottleneck, [3,4,6,3]),
'101':(Bottleneck, [3,4,23,3]),
'152':(Bottleneck, [3,8,36,3]),
}
return cf_dict[str(depth)]
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = conv3x3(in_planes, planes, stride)
self.conv2 = conv3x3(planes, planes)
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion * planes:
self.shortcut = nn.Sequential(
weightNorm(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=True)),
)
self.relu_1 = TReLU()
self.relu_2 = TReLU()
def forward(self, x):
out = self.relu_1(self.conv1(x))
out = self.conv2(out)
out += self.shortcut(x)
out = self.relu_2(out)
return out
class Bottleneck(nn.Module):
expansion = 4
def __init__(self, in_planes, planes, stride=1):
super(Bottleneck, self).__init__()
self.conv1 = weightNorm(nn.Conv2d(in_planes, planes, kernel_size=1, bias=True))
self.conv2 = weightNorm(nn.Conv2d(planes, planes, kernel_size=3, stride=stride, padding=1, bias=True))
self.conv3 = weightNorm(nn.Conv2d(planes, self.expansion*planes, kernel_size=1, bias=True))
self.relu_1 = TReLU()
self.relu_2 = TReLU()
self.relu_3 = TReLU()
self.shortcut = nn.Sequential()
if stride != 1 or in_planes != self.expansion*planes:
self.shortcut = nn.Sequential(
weightNorm(nn.Conv2d(in_planes, self.expansion*planes, kernel_size=1, stride=stride, bias=True)),
)
def forward(self, x):
out = self.relu_1(self.conv1(x))
out = self.relu_2(self.conv2(out))
out = self.conv3(out)
out += self.shortcut(x)
out = self.relu_3(out)
return out
class ResNet_wobn(nn.Module):
def __init__(self, num_inputs, depth, num_outputs):
super(ResNet_wobn, self).__init__()
self.in_planes = 64
block, num_blocks = cfg(depth)
self.conv1 = conv3x3(num_inputs, 64, 2)
self.layer1 = self._make_layer(block, 64, num_blocks[0], stride=2)
self.layer2 = self._make_layer(block, 128, num_blocks[1], stride=2)
self.layer3 = self._make_layer(block, 256, num_blocks[2], stride=2)
self.layer4 = self._make_layer(block, 512, num_blocks[3], stride=2)
self.fc = nn.Linear(512, num_outputs)
self.relu_1 = TReLU()
def _make_layer(self, block, planes, num_blocks, stride):
strides = [stride] + [1]*(num_blocks-1)
layers = []
for stride in strides:
layers.append(block(self.in_planes, planes, stride))
self.in_planes = planes * block.expansion
return nn.Sequential(*layers)
def forward(self, x):
x = self.relu_1(self.conv1(x))
x = self.layer1(x)
x = self.layer2(x)
x = self.layer3(x)
x = self.layer4(x)
x = F.avg_pool2d(x, 4)
x = x.view(x.size(0), -1)
x = self.fc(x)
return x
|
import numpy as np
from ..utils.util import *
class Evaluator(object):
def __init__(self, args, env_batch, writer):
self.validate_episodes = args.validate_episodes
self.max_step = args.max_step
self.env_batch = env_batch
self.writer = writer
self.log = 0
def __call__(self, env, policy, debug=False):
observation = None
for episode in range(self.validate_episodes):
# reset at the start of episode
observation = env.reset(test=True, episode=episode)
episode_steps = 0
episode_reward = 0.
assert observation is not None
# start episode
episode_reward = np.zeros(self.env_batch)
while (episode_steps < self.max_step or not self.max_step):
action = policy(observation)
observation, reward, done, (step_num) = env.step(action)
episode_reward += reward
episode_steps += 1
if self.writer:
env.save_image(self.log, episode_steps)
dist = env.get_dist()
self.log += 1
return episode_reward, dist
|
import os
import torch
from torch.autograd import Variable
USE_CUDA = torch.cuda.is_available()
def prRed(prt): print("\033[91m {}\033[00m" .format(prt))
def prGreen(prt): print("\033[92m {}\033[00m" .format(prt))
def prYellow(prt): print("\033[93m {}\033[00m" .format(prt))
def prLightPurple(prt): print("\033[94m {}\033[00m" .format(prt))
def prPurple(prt): print("\033[95m {}\033[00m" .format(prt))
def prCyan(prt): print("\033[96m {}\033[00m" .format(prt))
def prLightGray(prt): print("\033[97m {}\033[00m" .format(prt))
def prBlack(prt): print("\033[98m {}\033[00m" .format(prt))
def to_numpy(var):
return var.cpu().data.numpy() if USE_CUDA else var.data.numpy()
def to_tensor(ndarray, device):
return torch.tensor(ndarray, dtype=torch.float, device=device)
def soft_update(target, source, tau):
for target_param, param in zip(target.parameters(), source.parameters()):
target_param.data.copy_(
target_param.data * (1.0 - tau) + param.data * tau
)
def hard_update(target, source):
for m1, m2 in zip(target.modules(), source.modules()):
m1._buffers = m2._buffers.copy()
for target_param, param in zip(target.parameters(), source.parameters()):
target_param.data.copy_(param.data)
def get_output_folder(parent_dir, env_name):
"""Return save folder.
Assumes folders in the parent_dir have suffix -run{run
number}. Finds the highest run number and sets the output folder
to that number + 1. This is just convenient so that if you run the
same script multiple times tensorboard can plot all of the results
on the same plots with different names.
Parameters
----------
parent_dir: str
Path of the directory containing all experiment runs.
Returns
-------
parent_dir/run_dir
Path to this run's save directory.
"""
os.makedirs(parent_dir, exist_ok=True)
experiment_id = 0
for folder_name in os.listdir(parent_dir):
if not os.path.isdir(os.path.join(parent_dir, folder_name)):
continue
try:
folder_name = int(folder_name.split('-run')[-1])
if folder_name > experiment_id:
experiment_id = folder_name
except:
pass
experiment_id += 1
parent_dir = os.path.join(parent_dir, env_name)
parent_dir = parent_dir + '-run{}'.format(experiment_id)
os.makedirs(parent_dir, exist_ok=True)
return parent_dir
|
import PIL
import scipy.misc
from io import BytesIO
import tensorboardX as tb
from tensorboardX.summary import Summary
class TensorBoard(object):
def __init__(self, model_dir):
self.summary_writer = tb.FileWriter(model_dir)
def add_image(self, tag, img, step):
summary = Summary()
bio = BytesIO()
if type(img) == str:
img = PIL.Image.open(img)
elif type(img) == PIL.Image.Image:
pass
else:
img = scipy.misc.toimage(img)
img.save(bio, format="png")
image_summary = Summary.Image(encoded_image_string=bio.getvalue())
summary.value.add(tag=tag, image=image_summary)
self.summary_writer.add_summary(summary, global_step=step)
def add_scalar(self, tag, value, step):
summary = Summary(value=[Summary.Value(tag=tag, simple_value=value)])
self.summary_writer.add_summary(summary, global_step=step)
|
from torchbenchmark.tasks import NLP
from torchbenchmark.util.framework.huggingface.model_factory import HuggingFaceModel
class Model(HuggingFaceModel):
task = NLP.LANGUAGE_MODELING
# Original train batch size per device: 8
# Source: https://github.com/huggingface/transformers/blob/master/examples/flax/language-modeling/run_t5_mlm_flax.py#L83
DEFAULT_TRAIN_BSIZE = 2
# Original eval batch size per device: 8
# Downscale to 1 to fit in Nvidia T4 of the infra
DEFAULT_EVAL_BSIZE = 1
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(name="hf_T5_large", test=test, device=device, batch_size=batch_size, extra_args=extra_args)
|
import subprocess
import sys
import os
from torchbenchmark.util.framework.huggingface.patch_hf import patch_transformers, cache_model
def pip_install_requirements():
subprocess.check_call([sys.executable, '-m', 'pip', 'install', '-q', '-r', 'requirements.txt'])
if __name__ == '__main__':
pip_install_requirements()
patch_transformers()
model_name = os.path.basename(os.path.dirname(os.path.abspath(__file__)))
cache_model(model_name)
|
from torchbenchmark.util.framework.vision.model_factory import TorchVisionModel
from torchbenchmark.tasks import COMPUTER_VISION
import torchvision.models as models
class Model(TorchVisionModel):
task = COMPUTER_VISION.CLASSIFICATION
# Train batch size: use the smallest example batch of 128 (assuming only 1 worker)
# Source: https://arxiv.org/pdf/1404.5997.pdf
DEFAULT_TRAIN_BSIZE = 128
DEFAULT_EVAL_BSIZE = 128
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(model_name="alexnet", test=test, device=device,
batch_size=batch_size, weights=models.AlexNet_Weights.IMAGENET1K_V1,
extra_args=extra_args)
|
from torchbenchmark.util.model import BenchmarkModel
from torchbenchmark.tasks import COMPUTER_VISION
import torch.nn as nn
import torch
from types import SimpleNamespace
import torch.utils.data as data
class DenseLayer(nn.Module):
def __init__(self, c_in, bn_size, growth_rate, act_fn):
"""
Inputs:
c_in - Number of input channels
bn_size - Bottleneck size (factor of growth rate) for the output of the 1x1 convolution. Typically between 2 and 4.
growth_rate - Number of output channels of the 3x3 convolution
act_fn - Activation class constructor (e.g. nn.ReLU)
"""
super().__init__()
self.net = nn.Sequential(
nn.BatchNorm2d(c_in),
act_fn(),
nn.Conv2d(c_in, bn_size * growth_rate, kernel_size=1, bias=False),
nn.BatchNorm2d(bn_size * growth_rate),
act_fn(),
nn.Conv2d(bn_size * growth_rate, growth_rate,
kernel_size=3, padding=1, bias=False)
)
def forward(self, x):
out = self.net(x)
out = torch.cat([out, x], dim=1)
return out
class DenseBlock(nn.Module):
def __init__(self, c_in, num_layers, bn_size, growth_rate, act_fn):
"""
Inputs:
c_in - Number of input channels
num_layers - Number of dense layers to apply in the block
bn_size - Bottleneck size to use in the dense layers
growth_rate - Growth rate to use in the dense layers
act_fn - Activation function to use in the dense layers
"""
super().__init__()
layers = []
for layer_idx in range(num_layers):
layers.append(
DenseLayer(c_in=c_in + layer_idx * growth_rate, # Input channels are original plus the feature maps from previous layers
bn_size=bn_size,
growth_rate=growth_rate,
act_fn=act_fn)
)
self.block = nn.Sequential(*layers)
def forward(self, x):
out = self.block(x)
return out
class TransitionLayer(nn.Module):
def __init__(self, c_in, c_out, act_fn):
super().__init__()
self.transition = nn.Sequential(
nn.BatchNorm2d(c_in),
act_fn(),
nn.Conv2d(c_in, c_out, kernel_size=1, bias=False),
# Average the output for each 2x2 pixel group
nn.AvgPool2d(kernel_size=2, stride=2)
)
def forward(self, x):
return self.transition(x)
class DenseNet(nn.Module):
def __init__(self, num_classes=10, num_layers=[6, 6, 6, 6], bn_size=2, growth_rate=16, act_fn_name="relu", **kwargs):
super().__init__()
act_fn_by_name = {
"tanh": nn.Tanh,
"relu": nn.ReLU,
"leakyrelu": nn.LeakyReLU,
"gelu": nn.GELU
}
self.hparams = SimpleNamespace(num_classes=num_classes,
num_layers=num_layers,
bn_size=bn_size,
growth_rate=growth_rate,
act_fn_name=act_fn_name,
act_fn=act_fn_by_name[act_fn_name])
self._create_network()
self._init_params()
def _create_network(self):
# The start number of hidden channels
c_hidden = self.hparams.growth_rate * self.hparams.bn_size
# A first convolution on the original image to scale up the channel size
self.input_net = nn.Sequential(
# No batch norm or activation function as done inside the Dense layers
nn.Conv2d(3, c_hidden, kernel_size=3, padding=1)
)
# Creating the dense blocks, eventually including transition layers
blocks = []
for block_idx, num_layers in enumerate(self.hparams.num_layers):
blocks.append(
DenseBlock(c_in=c_hidden,
num_layers=num_layers,
bn_size=self.hparams.bn_size,
growth_rate=self.hparams.growth_rate,
act_fn=self.hparams.act_fn)
)
# Overall output of the dense block
c_hidden = c_hidden + num_layers * self.hparams.growth_rate
# Don't apply transition layer on last block
if block_idx < len(self.hparams.num_layers) - 1:
blocks.append(
TransitionLayer(c_in=c_hidden,
c_out=c_hidden // 2,
act_fn=self.hparams.act_fn))
c_hidden = c_hidden // 2
self.blocks = nn.Sequential(*blocks)
# Mapping to classification output
self.output_net = nn.Sequential(
# The features have not passed a non-linearity until here.
nn.BatchNorm2d(c_hidden),
self.hparams.act_fn(),
nn.AdaptiveAvgPool2d((1, 1)),
nn.Flatten(),
nn.Linear(c_hidden, self.hparams.num_classes)
)
def _init_params(self):
# Based on our discussion in Tutorial 4, we should initialize the convolutions according to the activation function
for m in self.modules():
if isinstance(m, nn.Conv2d):
nn.init.kaiming_normal_(
m.weight, nonlinearity=self.hparams.act_fn_name)
elif isinstance(m, nn.BatchNorm2d):
nn.init.constant_(m.weight, 1)
nn.init.constant_(m.bias, 0)
def forward(self, x):
x = self.input_net(x)
x = self.blocks(x)
x = self.output_net(x)
return x
class Model(BenchmarkModel):
task = COMPUTER_VISION.CLASSIFICATION
# Source: https://github.com/phlippe/uvadlc_notebooks_benchmarking/blob/main/PyTorch/Tutorial5_Inception_ResNet_DenseNet.py
DEFAULT_TRAIN_BSIZE = 128
DEFAULT_EVAL_BSIZE = 128
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(test=test, device=device,
batch_size=batch_size, extra_args=extra_args)
self.model = DenseNet()
self.model.to(device)
self.example_inputs = (
torch.randn((self.batch_size, 3, 32, 32), device=self.device),
)
self.example_target = torch.randint(0, 10, (self.batch_size,), device=self.device)
dataset = data.TensorDataset(self.example_inputs[0], self.example_target)
dummy_loader = data.DataLoader(dataset, batch_size=self.batch_size)
self.optimizer = torch.optim.AdamW(self.model.parameters(), lr=1e-3, weight_decay=1e-4)
self.criterion = nn.CrossEntropyLoss()
def get_module(self):
return self.model, self.example_inputs
def train(self):
model = self.model
(images, ) = self.example_inputs
model.train()
targets = self.example_target
output = model(images)
loss = self.criterion(output, targets)
loss.backward()
self.optimizer.step()
self.optimizer.zero_grad()
def eval(self):
model = self.model
(images, ) = self.example_inputs
model.eval()
with torch.no_grad():
out = model(images)
return (out,)
|
from torchbenchmark.util.framework.timm.model_factory import TimmModel
from torchbenchmark.tasks import COMPUTER_VISION
class Model(TimmModel):
task = COMPUTER_VISION.DETECTION
DEFAULT_TRAIN_BSIZE = 32
DEFAULT_EVAL_BSIZE = 32
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(test=test, model_name='vovnet39a', device=device,
batch_size=batch_size, extra_args=extra_args) |
from torchbenchmark.tasks import NLP
from torchbenchmark.util.framework.huggingface.model_factory import HuggingFaceModel
class Model(HuggingFaceModel):
task = NLP.LANGUAGE_MODELING
DEFAULT_TRAIN_BSIZE = 2
DEFAULT_EVAL_BSIZE = 1
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(name="hf_Longformer", test=test, device=device, batch_size=batch_size, extra_args=extra_args)
|
import subprocess
import sys
import os
from torchbenchmark.util.framework.huggingface.patch_hf import patch_transformers, cache_model
def pip_install_requirements():
subprocess.check_call([sys.executable, '-m', 'pip', 'install', '-q', '-r', 'requirements.txt'])
if __name__ == '__main__':
pip_install_requirements()
patch_transformers()
model_name = os.path.basename(os.path.dirname(os.path.abspath(__file__)))
cache_model(model_name)
|
"""
HuggingFace Stable Diffusion model.
It requires users to specify "HUGGINGFACE_AUTH_TOKEN" in environment variable
to authorize login and agree HuggingFace terms and conditions.
"""
from torchbenchmark.tasks import COMPUTER_VISION
from torchbenchmark.util.model import BenchmarkModel
from torchbenchmark.util.framework.huggingface.model_factory import HuggingFaceAuthMixin
import torch
from diffusers import StableDiffusionPipeline, EulerDiscreteScheduler
class Model(BenchmarkModel, HuggingFaceAuthMixin):
task = COMPUTER_VISION.GENERATION
DEFAULT_TRAIN_BSIZE = 1
DEFAULT_EVAL_BSIZE = 1
ALLOW_CUSTOMIZE_BSIZE = False
# Skip deepcopy because it will oom on A100 40GB
DEEPCOPY = False
# Default eval precision on CUDA device is fp16
DEFAULT_EVAL_CUDA_PRECISION = "fp16"
def __init__(self, test, device, batch_size=None, extra_args=[]):
HuggingFaceAuthMixin.__init__(self)
super().__init__(test=test, device=device,
batch_size=batch_size, extra_args=extra_args)
model_id = "stabilityai/stable-diffusion-2"
scheduler = EulerDiscreteScheduler.from_pretrained(model_id, subfolder="scheduler")
self.pipe = StableDiffusionPipeline.from_pretrained(model_id, scheduler=scheduler)
self.example_inputs = "a photo of an astronaut riding a horse on mars"
self.pipe.to(self.device)
def enable_fp16_half(self):
pass
def get_module(self):
random_input = torch.randn(1, 4, 128, 128).to(self.device)
timestep = torch.tensor([1.0]).to(self.device)
encoder_hidden_states = torch.randn(1, 1, 1024).to(self.device)
return self.pipe.unet, [random_input, timestep, encoder_hidden_states]
def train(self):
raise NotImplementedError("Train test is not implemented for the stable diffusion model.")
def eval(self):
image = self.pipe(self.example_inputs)
return (image, )
|
from torchbenchmark.util.framework.diffusers import install_diffusers
from torchbenchmark.util.framework.huggingface.model_factory import HuggingFaceAuthMixin
import torch
import os
import warnings
MODEL_NAME = "stabilityai/stable-diffusion-2"
def load_model_checkpoint():
from diffusers import StableDiffusionPipeline
StableDiffusionPipeline.from_pretrained(MODEL_NAME, torch_dtype=torch.float16, safety_checker=None)
if __name__ == "__main__":
if not 'HUGGING_FACE_HUB_TOKEN' in os.environ:
warnings.warn("Make sure to set `HUGGINGFACE_HUB_TOKEN` so you can download weights")
else:
install_diffusers()
load_model_checkpoint()
|
import os
from torchbenchmark.tasks import COMPUTER_VISION
from torchbenchmark.util.framework.detectron2.model_factory import Detectron2Model
MODEL_NAME = os.path.basename(os.path.dirname(os.path.abspath(__file__)))
MODEL_DIR = os.path.abspath(os.path.dirname(__file__))
class Model(Detectron2Model):
task = COMPUTER_VISION.DETECTION
model_file = os.path.join(MODEL_DIR, ".data", f"{MODEL_NAME}.pkl")
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(variant="COCO-Detection/faster_rcnn_R_101_C4_3x.yaml", test=test, device=device,
batch_size=batch_size, extra_args=extra_args)
|
import os
from torchbenchmark.util.framework.detectron2 import install_detectron2
MODEL_NAME = os.path.basename(os.path.dirname(os.path.abspath(__file__)))
MODEL_DIR = os.path.abspath(os.path.dirname(__file__))
if __name__ == '__main__':
install_detectron2(MODEL_NAME, MODEL_DIR)
|
import matplotlib
matplotlib.use("Agg")
import matplotlib.pylab as plt
import numpy as np
def save_figure_to_numpy(fig):
# save it to a numpy array.
data = np.fromstring(fig.canvas.tostring_rgb(), dtype=np.uint8, sep='')
data = data.reshape(fig.canvas.get_width_height()[::-1] + (3,))
return data
def plot_alignment_to_numpy(alignment, info=None):
fig, ax = plt.subplots(figsize=(6, 4))
im = ax.imshow(alignment, aspect='auto', origin='lower',
interpolation='none')
fig.colorbar(im, ax=ax)
xlabel = 'Decoder timestep'
if info is not None:
xlabel += '\n\n' + info
plt.xlabel(xlabel)
plt.ylabel('Encoder timestep')
plt.tight_layout()
fig.canvas.draw()
data = save_figure_to_numpy(fig)
plt.close()
return data
def plot_spectrogram_to_numpy(spectrogram):
fig, ax = plt.subplots(figsize=(12, 3))
im = ax.imshow(spectrogram, aspect="auto", origin="lower",
interpolation='none')
plt.colorbar(im, ax=ax)
plt.xlabel("Frames")
plt.ylabel("Channels")
plt.tight_layout()
fig.canvas.draw()
data = save_figure_to_numpy(fig)
plt.close()
return data
def plot_gate_outputs_to_numpy(gate_targets, gate_outputs):
fig, ax = plt.subplots(figsize=(12, 3))
ax.scatter(range(len(gate_targets)), gate_targets, alpha=0.5,
color='green', marker='+', s=1, label='target')
ax.scatter(range(len(gate_outputs)), gate_outputs, alpha=0.5,
color='red', marker='.', s=1, label='predicted')
plt.xlabel("Frames (Green target, Red predicted)")
plt.ylabel("Gate State")
plt.tight_layout()
fig.canvas.draw()
data = save_figure_to_numpy(fig)
plt.close()
return data
|
import os
import time
import argparse
import math
from numpy import finfo
import torch
from .distributed import apply_gradient_allreduce
import torch.distributed as dist
from torch.utils.data.distributed import DistributedSampler
from torch.utils.data import DataLoader
from .model import Tacotron2
from .data_utils import TextMelLoader, TextMelCollate
from .loss_function import Tacotron2Loss
# from hparams import create_hparams
def reduce_tensor(tensor, n_gpus):
rt = tensor.clone()
dist.all_reduce(rt, op=dist.reduce_op.SUM)
rt /= n_gpus
return rt
def init_distributed(hparams, n_gpus, rank, group_name):
assert torch.cuda.is_available(), "Distributed mode requires CUDA."
print("Initializing Distributed")
# Set cuda device so everything is done on the right GPU.
torch.cuda.set_device(rank % torch.cuda.device_count())
# Initialize distributed communication
dist.init_process_group(
backend=hparams.dist_backend, init_method=hparams.dist_url,
world_size=n_gpus, rank=rank, group_name=group_name)
print("Done initializing distributed")
def prepare_dataloaders(hparams):
# Get data, data loaders and collate function ready
trainset = TextMelLoader(hparams.training_files, hparams)
valset = TextMelLoader(hparams.validation_files, hparams)
collate_fn = TextMelCollate(hparams.n_frames_per_step)
if hparams.distributed_run:
train_sampler = DistributedSampler(trainset)
shuffle = False
else:
train_sampler = None
shuffle = True
train_loader = DataLoader(trainset, num_workers=0, shuffle=shuffle,
sampler=train_sampler,
batch_size=hparams.batch_size, pin_memory=False,
drop_last=True, collate_fn=collate_fn)
return train_loader, valset, collate_fn
def prepare_directories_and_logger(output_directory, log_directory, rank):
if rank == 0:
if not os.path.isdir(output_directory):
os.makedirs(output_directory)
os.chmod(output_directory, 0o775)
# logger = Tacotron2Logger(os.path.join(output_directory, log_directory))
logger = None
else:
logger = None
return logger
def load_model(hparams):
model = Tacotron2(hparams).cuda()
if hparams.fp16_run:
model.decoder.attention_layer.score_mask_value = finfo('float16').min
if hparams.distributed_run:
model = apply_gradient_allreduce(model)
return model
def warm_start_model(checkpoint_path, model, ignore_layers):
assert os.path.isfile(checkpoint_path)
print("Warm starting model from checkpoint '{}'".format(checkpoint_path))
checkpoint_dict = torch.load(checkpoint_path, map_location='cpu')
model_dict = checkpoint_dict['state_dict']
if len(ignore_layers) > 0:
model_dict = {k: v for k, v in model_dict.items()
if k not in ignore_layers}
dummy_dict = model.state_dict()
dummy_dict.update(model_dict)
model_dict = dummy_dict
model.load_state_dict(model_dict)
return model
def load_checkpoint(checkpoint_path, model, optimizer):
assert os.path.isfile(checkpoint_path)
print("Loading checkpoint '{}'".format(checkpoint_path))
checkpoint_dict = torch.load(checkpoint_path, map_location='cpu')
model.load_state_dict(checkpoint_dict['state_dict'])
optimizer.load_state_dict(checkpoint_dict['optimizer'])
learning_rate = checkpoint_dict['learning_rate']
iteration = checkpoint_dict['iteration']
print("Loaded checkpoint '{}' from iteration {}" .format(
checkpoint_path, iteration))
return model, optimizer, learning_rate, iteration
def save_checkpoint(model, optimizer, learning_rate, iteration, filepath):
print("Saving model and optimizer state at iteration {} to {}".format(
iteration, filepath))
torch.save({'iteration': iteration,
'state_dict': model.state_dict(),
'optimizer': optimizer.state_dict(),
'learning_rate': learning_rate}, filepath)
def validate(model, criterion, valset, iteration, batch_size, n_gpus,
collate_fn, logger, distributed_run, rank):
"""Handles all the validation scoring and printing"""
model.eval()
with torch.no_grad():
val_sampler = DistributedSampler(valset) if distributed_run else None
val_loader = DataLoader(valset, sampler=val_sampler, num_workers=1,
shuffle=False, batch_size=batch_size,
pin_memory=False, collate_fn=collate_fn)
val_loss = 0.0
for i, batch in enumerate(val_loader):
x, y = model.parse_batch(batch)
y_pred = model(x)
loss = criterion(y_pred, y)
if distributed_run:
reduced_val_loss = reduce_tensor(loss.data, n_gpus).item()
else:
reduced_val_loss = loss.item()
val_loss += reduced_val_loss
val_loss = val_loss / (i + 1)
model.train()
if rank == 0:
print("Validation loss {}: {:9f} ".format(iteration, val_loss))
logger.log_validation(val_loss, model, y, y_pred, iteration)
def train(output_directory, log_directory, checkpoint_path, warm_start, n_gpus,
rank, group_name, hparams):
"""Training and validation logging results to tensorboard and stdout
Params
------
output_directory (string): directory to save checkpoints
log_directory (string) directory to save tensorboard logs
checkpoint_path(string): checkpoint path
n_gpus (int): number of gpus
rank (int): rank of current gpu
hparams (object): comma separated list of "name=value" pairs.
"""
if hparams.distributed_run:
init_distributed(hparams, n_gpus, rank, group_name)
model = load_model(hparams)
learning_rate = hparams.learning_rate
optimizer = torch.optim.Adam(model.parameters(), lr=learning_rate,
weight_decay=hparams.weight_decay)
if hparams.fp16_run:
from apex import amp
model, optimizer = amp.initialize(
model, optimizer, opt_level='O2')
if hparams.distributed_run:
model = apply_gradient_allreduce(model)
criterion = Tacotron2Loss()
logger = prepare_directories_and_logger(
output_directory, log_directory, rank)
train_loader, valset, collate_fn = prepare_dataloaders(hparams)
# Load checkpoint if one exists
iteration = 0
epoch_offset = 0
if checkpoint_path is not None:
if warm_start:
model = warm_start_model(
checkpoint_path, model, hparams.ignore_layers)
else:
model, optimizer, _learning_rate, iteration = load_checkpoint(
checkpoint_path, model, optimizer)
if hparams.use_saved_learning_rate:
learning_rate = _learning_rate
iteration += 1 # next iteration is iteration + 1
epoch_offset = max(0, int(iteration / len(train_loader)))
model.train()
is_overflow = False
# ================ MAIN TRAINNIG LOOP! ===================
for epoch in range(epoch_offset, hparams.epochs):
print("Epoch: {}".format(epoch))
for i, batch in enumerate(train_loader):
start = time.perf_counter()
for param_group in optimizer.param_groups:
param_group['lr'] = learning_rate
model.zero_grad()
x, y = model.parse_batch(batch)
y_pred = model(x)
loss = criterion(y_pred, y)
if hparams.distributed_run:
reduced_loss = reduce_tensor(loss.data, n_gpus).item()
else:
reduced_loss = loss.item()
if hparams.fp16_run:
with amp.scale_loss(loss, optimizer) as scaled_loss:
scaled_loss.backward()
else:
loss.backward()
if hparams.fp16_run:
grad_norm = torch.nn.utils.clip_grad_norm_(
amp.master_params(optimizer), hparams.grad_clip_thresh)
is_overflow = math.isnan(grad_norm)
else:
grad_norm = torch.nn.utils.clip_grad_norm_(
model.parameters(), hparams.grad_clip_thresh)
optimizer.step()
if not is_overflow and rank == 0:
duration = time.perf_counter() - start
print("Train loss {} {:.6f} Grad Norm {:.6f} {:.2f}s/it".format(
iteration, reduced_loss, grad_norm, duration))
logger.log_training(
reduced_loss, grad_norm, learning_rate, duration, iteration)
if not is_overflow and (iteration % hparams.iters_per_checkpoint == 0):
validate(model, criterion, valset, iteration,
hparams.batch_size, n_gpus, collate_fn, logger,
hparams.distributed_run, rank)
if rank == 0:
checkpoint_path = os.path.join(
output_directory, "checkpoint_{}".format(iteration))
save_checkpoint(model, optimizer, learning_rate, iteration,
checkpoint_path)
iteration += 1
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('-o', '--output_directory', type=str,
help='directory to save checkpoints')
parser.add_argument('-l', '--log_directory', type=str,
help='directory to save tensorboard logs')
parser.add_argument('-c', '--checkpoint_path', type=str, default=None,
required=False, help='checkpoint path')
parser.add_argument('--warm_start', action='store_true',
help='load model weights only, ignore specified layers')
parser.add_argument('--n_gpus', type=int, default=1,
required=False, help='number of gpus')
parser.add_argument('--rank', type=int, default=0,
required=False, help='rank of current gpu')
parser.add_argument('--group_name', type=str, default='group_name',
required=False, help='Distributed group name')
parser.add_argument('--hparams', type=str,
required=False, help='comma separated name=value pairs')
args = parser.parse_args()
hparams = create_hparams(args.hparams)
torch.backends.cudnn.enabled = hparams.cudnn_enabled
torch.backends.cudnn.benchmark = hparams.cudnn_benchmark
print("FP16 Run:", hparams.fp16_run)
print("Dynamic Loss Scaling:", hparams.dynamic_loss_scaling)
print("Distributed Run:", hparams.distributed_run)
print("cuDNN Enabled:", hparams.cudnn_enabled)
print("cuDNN Benchmark:", hparams.cudnn_benchmark)
train(args.output_directory, args.log_directory, args.checkpoint_path,
args.warm_start, args.n_gpus, args.rank, args.group_name, hparams)
|
import tensorflow as tf
from text import symbols
def create_hparams(hparams_string=None, verbose=False):
"""Create model hyperparameters. Parse nondefault from given string."""
hparams = tf.contrib.training.HParams(
################################
# Experiment Parameters #
################################
epochs=500,
iters_per_checkpoint=1000,
seed=1234,
dynamic_loss_scaling=True,
fp16_run=False,
distributed_run=False,
dist_backend="nccl",
dist_url="tcp://localhost:54321",
cudnn_enabled=True,
cudnn_benchmark=False,
ignore_layers=['embedding.weight'],
################################
# Data Parameters #
################################
load_mel_from_disk=False,
training_files='filelists/ljs_audio_text_train_filelist.txt',
validation_files='filelists/ljs_audio_text_val_filelist.txt',
text_cleaners=['english_cleaners'],
################################
# Audio Parameters #
################################
max_wav_value=32768.0,
sampling_rate=22050,
filter_length=1024,
hop_length=256,
win_length=1024,
n_mel_channels=80,
mel_fmin=0.0,
mel_fmax=8000.0,
################################
# Model Parameters #
################################
n_symbols=len(symbols),
symbols_embedding_dim=512,
# Encoder parameters
encoder_kernel_size=5,
encoder_n_convolutions=3,
encoder_embedding_dim=512,
# Decoder parameters
n_frames_per_step=1, # currently only 1 is supported
decoder_rnn_dim=1024,
prenet_dim=256,
max_decoder_steps=1000,
gate_threshold=0.5,
p_attention_dropout=0.1,
p_decoder_dropout=0.1,
# Attention parameters
attention_rnn_dim=1024,
attention_dim=128,
# Location Layer parameters
attention_location_n_filters=32,
attention_location_kernel_size=31,
# Mel-post processing network parameters
postnet_embedding_dim=512,
postnet_kernel_size=5,
postnet_n_convolutions=5,
################################
# Optimization Hyperparameters #
################################
use_saved_learning_rate=False,
learning_rate=1e-3,
weight_decay=1e-6,
grad_clip_thresh=1.0,
batch_size=64,
mask_padding=True # set model's padded outputs to padded values
)
if hparams_string:
tf.logging.info('Parsing command line hparams: %s', hparams_string)
hparams.parse(hparams_string)
if verbose:
tf.logging.info('Final parsed hparams: %s', hparams.values())
return hparams
|
from .train_tacotron2 import load_model, prepare_dataloaders
import torch
from .loss_function import Tacotron2Loss
from argparse import Namespace
from .text import symbols
from pathlib import Path
from ...util.model import BenchmarkModel
from typing import Tuple
from contextlib import nullcontext
from torchbenchmark.tasks import SPEECH
class Model(BenchmarkModel):
task = SPEECH.SYNTHESIS
# Training batch size comes from the source code:
# Source: https://github.com/NVIDIA/tacotron2/blob/bb6761349354ee914909a42208e4820929612069/hparams.py#L84
DEFAULT_TRAIN_BSIZE = 64
DEFAULT_EVAL_BSIZE = 64
# Tacotron2 CUDA inference test uses amp precision
DEFAULT_EVAL_CUDA_PRECISION = "amp"
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(test=test, device=device, batch_size=batch_size, extra_args=extra_args)
if device == 'cpu':
# TODO - currently load_model assumes cuda
raise NotImplementedError("Tacotron2 doesn't support CPU because load_model assumes CUDA.")
self.hparams = self.create_hparams(batch_size=self.batch_size)
self.model = load_model(self.hparams).to(device=device)
self.optimizer = torch.optim.Adam(self.model.parameters(),
lr=self.hparams.learning_rate,
weight_decay=self.hparams.weight_decay)
self.criterion = Tacotron2Loss().to(device=device)
loader, valset, collate_fn = prepare_dataloaders(self.hparams)
self.example_inputs, self.target = self.model.parse_batch(next(iter(loader)), device=self.device)
self.amp_context = nullcontext
# Parameters were obtained from the source code.
# Source: https://github.com/NVIDIA/tacotron2/blob/bb6761349354ee914909a42208e4820929612069/hparams.py#L5
def create_hparams(hparams_string=None, verbose=False, batch_size=64):
"""Create model hyperparameters. Parse nondefault from given string."""
root = str(Path(__file__).parent.parent.parent)
hparams = Namespace(**{
################################
# Experiment Parameters #
################################
'epochs': 2, # Reduced in TorchBench to shorten number of train iterations.
'iters_per_checkpoint': 1000,
'dynamic_loss_scaling': True,
'fp16_run': False,
'distributed_run': False,
'dist_backend': "nccl",
'dist_url': "tcp://localhost:54321",
'cudnn_enabled': True,
'cudnn_benchmark': False,
'ignore_layers': ['embedding.weight'],
################################
# Data Parameters #
################################
'load_mel_from_disk': False,
'training_files': f'{root}/data/.data/tacotron2-minimal/filelists/ljs_audio_text_train_filelist.txt',
'validation_files': f'{root}/data/.data/tacotron2-minimal/filelists/ljs_audio_text_val_filelist.txt',
'text_cleaners': ['english_cleaners'],
################################
# Audio Parameters #
################################
'max_wav_value': 32768.0,
'sampling_rate': 22050,
'filter_length': 1024,
'hop_length': 256,
'win_length': 1024,
'n_mel_channels': 80,
'mel_fmin': 0.0,
'mel_fmax': 8000.0,
################################
# Model Parameters #
################################
'n_symbols': len(symbols),
'symbols_embedding_dim': 512,
# Encoder parameters
'encoder_kernel_size': 5,
'encoder_n_convolutions': 3,
'encoder_embedding_dim': 512,
# Decoder parameters
'n_frames_per_step': 1, # currently only 1 is supported
'decoder_rnn_dim': 1024,
'prenet_dim': 256,
'max_decoder_steps': 1000,
'gate_threshold': 0.5,
'p_attention_dropout': 0.1,
'p_decoder_dropout': 0.1,
# Attention parameters
'attention_rnn_dim': 1024,
'attention_dim': 128,
# Location Layer parameters
'attention_location_n_filters': 32,
'attention_location_kernel_size': 31,
# Mel-post processing network parameters
'postnet_embedding_dim': 512,
'postnet_kernel_size': 5,
'postnet_n_convolutions': 5,
################################
# Optimization Hyperparameters #
################################
'use_saved_learning_rate': False,
'learning_rate': 1e-3,
'weight_decay': 1e-6,
'grad_clip_thresh': 1.0,
'batch_size': batch_size,
'mask_padding': True # set model's padded outputs to padded values
})
return hparams
def get_module(self):
return self.model, (self.example_inputs,)
def train(self):
self.model.train()
self.model.zero_grad()
y_pred = self.model(self.example_inputs)
loss = self.criterion(y_pred, self.target)
loss.backward()
self.optimizer.step()
def eval(self) -> Tuple[torch.Tensor]:
self.model.eval()
with self.amp_context():
out = self.model(self.example_inputs)
return out
|
import torch
import numpy as np
from scipy.signal import get_window
import librosa.util as librosa_util
def window_sumsquare(window, n_frames, hop_length=200, win_length=800,
n_fft=800, dtype=np.float32, norm=None):
"""
# from librosa 0.6
Compute the sum-square envelope of a window function at a given hop length.
This is used to estimate modulation effects induced by windowing
observations in short-time fourier transforms.
Parameters
----------
window : string, tuple, number, callable, or list-like
Window specification, as in `get_window`
n_frames : int > 0
The number of analysis frames
hop_length : int > 0
The number of samples to advance between frames
win_length : [optional]
The length of the window function. By default, this matches `n_fft`.
n_fft : int > 0
The length of each analysis frame.
dtype : np.dtype
The data type of the output
Returns
-------
wss : np.ndarray, shape=`(n_fft + hop_length * (n_frames - 1))`
The sum-squared envelope of the window function
"""
if win_length is None:
win_length = n_fft
n = n_fft + hop_length * (n_frames - 1)
x = np.zeros(n, dtype=dtype)
# Compute the squared window at the desired length
win_sq = get_window(window, win_length, fftbins=True)
win_sq = librosa_util.normalize(win_sq, norm=norm)**2
win_sq = librosa_util.pad_center(win_sq, n_fft)
# Fill the envelope
for i in range(n_frames):
sample = i * hop_length
x[sample:min(n, sample + n_fft)] += win_sq[:max(0, min(n_fft, n - sample))]
return x
def griffin_lim(magnitudes, stft_fn, n_iters=30):
"""
PARAMS
------
magnitudes: spectrogram magnitudes
stft_fn: STFT class with transform (STFT) and inverse (ISTFT) methods
"""
angles = np.angle(np.exp(2j * np.pi * np.random.rand(*magnitudes.size())))
angles = angles.astype(np.float32)
angles = torch.autograd.Variable(torch.from_numpy(angles))
signal = stft_fn.inverse(magnitudes, angles).squeeze(1)
for i in range(n_iters):
_, angles = stft_fn.transform(signal)
signal = stft_fn.inverse(magnitudes, angles).squeeze(1)
return signal
def dynamic_range_compression(x, C=1, clip_val=1e-5):
"""
PARAMS
------
C: compression factor
"""
return torch.log(torch.clamp(x, min=clip_val) * C)
def dynamic_range_decompression(x, C=1):
"""
PARAMS
------
C: compression factor used to compress
"""
return torch.exp(x) / C
|
import random
import torch
from torch.utils.tensorboard import SummaryWriter
from plotting_utils import plot_alignment_to_numpy, plot_spectrogram_to_numpy
from plotting_utils import plot_gate_outputs_to_numpy
class Tacotron2Logger(SummaryWriter):
def __init__(self, logdir):
super(Tacotron2Logger, self).__init__(logdir)
def log_training(self, reduced_loss, grad_norm, learning_rate, duration,
iteration):
self.add_scalar("training.loss", reduced_loss, iteration)
self.add_scalar("grad.norm", grad_norm, iteration)
self.add_scalar("learning.rate", learning_rate, iteration)
self.add_scalar("duration", duration, iteration)
def log_validation(self, reduced_loss, model, y, y_pred, iteration):
self.add_scalar("validation.loss", reduced_loss, iteration)
_, mel_outputs, gate_outputs, alignments = y_pred
mel_targets, gate_targets = y
# plot distribution of parameters
for tag, value in model.named_parameters():
tag = tag.replace('.', '/')
self.add_histogram(tag, value.data.cpu().numpy(), iteration)
# plot alignment, mel target and predicted, gate target and predicted
idx = random.randint(0, alignments.size(0) - 1)
self.add_image(
"alignment",
plot_alignment_to_numpy(alignments[idx].data.cpu().numpy().T),
iteration, dataformats='HWC')
self.add_image(
"mel_target",
plot_spectrogram_to_numpy(mel_targets[idx].data.cpu().numpy()),
iteration, dataformats='HWC')
self.add_image(
"mel_predicted",
plot_spectrogram_to_numpy(mel_outputs[idx].data.cpu().numpy()),
iteration, dataformats='HWC')
self.add_image(
"gate",
plot_gate_outputs_to_numpy(
gate_targets[idx].data.cpu().numpy(),
torch.sigmoid(gate_outputs[idx]).data.cpu().numpy()),
iteration, dataformats='HWC')
|
from math import sqrt
import torch
from torch.autograd import Variable
from torch import nn
from torch.nn import functional as F
from .layers import ConvNorm, LinearNorm
from .tacotron2_utils import to_gpu, get_mask_from_lengths
class LocationLayer(nn.Module):
def __init__(self, attention_n_filters, attention_kernel_size,
attention_dim):
super(LocationLayer, self).__init__()
padding = int((attention_kernel_size - 1) / 2)
self.location_conv = ConvNorm(2, attention_n_filters,
kernel_size=attention_kernel_size,
padding=padding, bias=False, stride=1,
dilation=1)
self.location_dense = LinearNorm(attention_n_filters, attention_dim,
bias=False, w_init_gain='tanh')
def forward(self, attention_weights_cat):
processed_attention = self.location_conv(attention_weights_cat)
processed_attention = processed_attention.transpose(1, 2)
processed_attention = self.location_dense(processed_attention)
return processed_attention
class Attention(nn.Module):
def __init__(self, attention_rnn_dim, embedding_dim, attention_dim,
attention_location_n_filters, attention_location_kernel_size):
super(Attention, self).__init__()
self.query_layer = LinearNorm(attention_rnn_dim, attention_dim,
bias=False, w_init_gain='tanh')
self.memory_layer = LinearNorm(embedding_dim, attention_dim, bias=False,
w_init_gain='tanh')
self.v = LinearNorm(attention_dim, 1, bias=False)
self.location_layer = LocationLayer(attention_location_n_filters,
attention_location_kernel_size,
attention_dim)
self.score_mask_value = -float("inf")
def get_alignment_energies(self, query, processed_memory,
attention_weights_cat):
"""
PARAMS
------
query: decoder output (batch, n_mel_channels * n_frames_per_step)
processed_memory: processed encoder outputs (B, T_in, attention_dim)
attention_weights_cat: cumulative and prev. att weights (B, 2, max_time)
RETURNS
-------
alignment (batch, max_time)
"""
processed_query = self.query_layer(query.unsqueeze(1))
processed_attention_weights = self.location_layer(attention_weights_cat)
energies = self.v(torch.tanh(
processed_query + processed_attention_weights + processed_memory))
energies = energies.squeeze(-1)
return energies
def forward(self, attention_hidden_state, memory, processed_memory,
attention_weights_cat, mask):
"""
PARAMS
------
attention_hidden_state: attention rnn last output
memory: encoder outputs
processed_memory: processed encoder outputs
attention_weights_cat: previous and cummulative attention weights
mask: binary mask for padded data
"""
alignment = self.get_alignment_energies(
attention_hidden_state, processed_memory, attention_weights_cat)
if mask is not None:
alignment.data.masked_fill_(mask, self.score_mask_value)
attention_weights = F.softmax(alignment, dim=1)
attention_context = torch.bmm(attention_weights.unsqueeze(1), memory)
attention_context = attention_context.squeeze(1)
return attention_context, attention_weights
class Prenet(nn.Module):
def __init__(self, in_dim, sizes):
super(Prenet, self).__init__()
in_sizes = [in_dim] + sizes[:-1]
self.layers = nn.ModuleList(
[LinearNorm(in_size, out_size, bias=False)
for (in_size, out_size) in zip(in_sizes, sizes)])
def forward(self, x):
for linear in self.layers:
x = F.dropout(F.relu(linear(x)), p=0.5, training=True)
return x
class Postnet(nn.Module):
"""Postnet
- Five 1-d convolution with 512 channels and kernel size 5
"""
def __init__(self, hparams):
super(Postnet, self).__init__()
self.convolutions = nn.ModuleList()
self.convolutions.append(
nn.Sequential(
ConvNorm(hparams.n_mel_channels, hparams.postnet_embedding_dim,
kernel_size=hparams.postnet_kernel_size, stride=1,
padding=int((hparams.postnet_kernel_size - 1) / 2),
dilation=1, w_init_gain='tanh'),
nn.BatchNorm1d(hparams.postnet_embedding_dim))
)
for i in range(1, hparams.postnet_n_convolutions - 1):
self.convolutions.append(
nn.Sequential(
ConvNorm(hparams.postnet_embedding_dim,
hparams.postnet_embedding_dim,
kernel_size=hparams.postnet_kernel_size, stride=1,
padding=int((hparams.postnet_kernel_size - 1) / 2),
dilation=1, w_init_gain='tanh'),
nn.BatchNorm1d(hparams.postnet_embedding_dim))
)
self.convolutions.append(
nn.Sequential(
ConvNorm(hparams.postnet_embedding_dim, hparams.n_mel_channels,
kernel_size=hparams.postnet_kernel_size, stride=1,
padding=int((hparams.postnet_kernel_size - 1) / 2),
dilation=1, w_init_gain='linear'),
nn.BatchNorm1d(hparams.n_mel_channels))
)
def forward(self, x):
for i in range(len(self.convolutions) - 1):
x = F.dropout(torch.tanh(self.convolutions[i](x)), 0.5, self.training)
x = F.dropout(self.convolutions[-1](x), 0.5, self.training)
return x
class Encoder(nn.Module):
"""Encoder module:
- Three 1-d convolution banks
- Bidirectional LSTM
"""
def __init__(self, hparams):
super(Encoder, self).__init__()
convolutions = []
for _ in range(hparams.encoder_n_convolutions):
conv_layer = nn.Sequential(
ConvNorm(hparams.encoder_embedding_dim,
hparams.encoder_embedding_dim,
kernel_size=hparams.encoder_kernel_size, stride=1,
padding=int((hparams.encoder_kernel_size - 1) / 2),
dilation=1, w_init_gain='relu'),
nn.BatchNorm1d(hparams.encoder_embedding_dim))
convolutions.append(conv_layer)
self.convolutions = nn.ModuleList(convolutions)
self.lstm = nn.LSTM(hparams.encoder_embedding_dim,
int(hparams.encoder_embedding_dim / 2), 1,
batch_first=True, bidirectional=True)
def forward(self, x, input_lengths):
for conv in self.convolutions:
x = F.dropout(F.relu(conv(x)), 0.5, self.training)
x = x.transpose(1, 2)
# pytorch tensor are not reversible, hence the conversion
input_lengths = input_lengths.cpu().numpy()
x = nn.utils.rnn.pack_padded_sequence(
x, input_lengths, batch_first=True)
self.lstm.flatten_parameters()
outputs, _ = self.lstm(x)
outputs, _ = nn.utils.rnn.pad_packed_sequence(
outputs, batch_first=True)
return outputs
def inference(self, x):
for conv in self.convolutions:
x = F.dropout(F.relu(conv(x)), 0.5, self.training)
x = x.transpose(1, 2)
self.lstm.flatten_parameters()
outputs, _ = self.lstm(x)
return outputs
class Decoder(nn.Module):
def __init__(self, hparams):
super(Decoder, self).__init__()
self.n_mel_channels = hparams.n_mel_channels
self.n_frames_per_step = hparams.n_frames_per_step
self.encoder_embedding_dim = hparams.encoder_embedding_dim
self.attention_rnn_dim = hparams.attention_rnn_dim
self.decoder_rnn_dim = hparams.decoder_rnn_dim
self.prenet_dim = hparams.prenet_dim
self.max_decoder_steps = hparams.max_decoder_steps
self.gate_threshold = hparams.gate_threshold
self.p_attention_dropout = hparams.p_attention_dropout
self.p_decoder_dropout = hparams.p_decoder_dropout
self.prenet = Prenet(
hparams.n_mel_channels * hparams.n_frames_per_step,
[hparams.prenet_dim, hparams.prenet_dim])
self.attention_rnn = nn.LSTMCell(
hparams.prenet_dim + hparams.encoder_embedding_dim,
hparams.attention_rnn_dim)
self.attention_layer = Attention(
hparams.attention_rnn_dim, hparams.encoder_embedding_dim,
hparams.attention_dim, hparams.attention_location_n_filters,
hparams.attention_location_kernel_size)
self.decoder_rnn = nn.LSTMCell(
hparams.attention_rnn_dim + hparams.encoder_embedding_dim,
hparams.decoder_rnn_dim, 1)
self.linear_projection = LinearNorm(
hparams.decoder_rnn_dim + hparams.encoder_embedding_dim,
hparams.n_mel_channels * hparams.n_frames_per_step)
self.gate_layer = LinearNorm(
hparams.decoder_rnn_dim + hparams.encoder_embedding_dim, 1,
bias=True, w_init_gain='sigmoid')
def get_go_frame(self, memory):
""" Gets all zeros frames to use as first decoder input
PARAMS
------
memory: decoder outputs
RETURNS
-------
decoder_input: all zeros frames
"""
B = memory.size(0)
decoder_input = Variable(memory.data.new(
B, self.n_mel_channels * self.n_frames_per_step).zero_())
return decoder_input
def initialize_decoder_states(self, memory, mask):
""" Initializes attention rnn states, decoder rnn states, attention
weights, attention cumulative weights, attention context, stores memory
and stores processed memory
PARAMS
------
memory: Encoder outputs
mask: Mask for padded data if training, expects None for inference
"""
B = memory.size(0)
MAX_TIME = memory.size(1)
self.attention_hidden = Variable(memory.data.new(
B, self.attention_rnn_dim).zero_())
self.attention_cell = Variable(memory.data.new(
B, self.attention_rnn_dim).zero_())
self.decoder_hidden = Variable(memory.data.new(
B, self.decoder_rnn_dim).zero_())
self.decoder_cell = Variable(memory.data.new(
B, self.decoder_rnn_dim).zero_())
self.attention_weights = Variable(memory.data.new(
B, MAX_TIME).zero_())
self.attention_weights_cum = Variable(memory.data.new(
B, MAX_TIME).zero_())
self.attention_context = Variable(memory.data.new(
B, self.encoder_embedding_dim).zero_())
self.memory = memory
self.processed_memory = self.attention_layer.memory_layer(memory)
self.mask = mask
def parse_decoder_inputs(self, decoder_inputs):
""" Prepares decoder inputs, i.e. mel outputs
PARAMS
------
decoder_inputs: inputs used for teacher-forced training, i.e. mel-specs
RETURNS
-------
inputs: processed decoder inputs
"""
# (B, n_mel_channels, T_out) -> (B, T_out, n_mel_channels)
decoder_inputs = decoder_inputs.transpose(1, 2)
decoder_inputs = decoder_inputs.view(
decoder_inputs.size(0),
int(decoder_inputs.size(1)/self.n_frames_per_step), -1)
# (B, T_out, n_mel_channels) -> (T_out, B, n_mel_channels)
decoder_inputs = decoder_inputs.transpose(0, 1)
return decoder_inputs
def parse_decoder_outputs(self, mel_outputs, gate_outputs, alignments):
""" Prepares decoder outputs for output
PARAMS
------
mel_outputs:
gate_outputs: gate output energies
alignments:
RETURNS
-------
mel_outputs:
gate_outpust: gate output energies
alignments:
"""
# (T_out, B) -> (B, T_out)
alignments = torch.stack(alignments).transpose(0, 1)
# (T_out, B) -> (B, T_out)
gate_outputs = torch.stack(gate_outputs).transpose(0, 1)
gate_outputs = gate_outputs.contiguous()
# (T_out, B, n_mel_channels) -> (B, T_out, n_mel_channels)
mel_outputs = torch.stack(mel_outputs).transpose(0, 1).contiguous()
# decouple frames per step
mel_outputs = mel_outputs.view(
mel_outputs.size(0), -1, self.n_mel_channels)
# (B, T_out, n_mel_channels) -> (B, n_mel_channels, T_out)
mel_outputs = mel_outputs.transpose(1, 2)
return mel_outputs, gate_outputs, alignments
def decode(self, decoder_input):
""" Decoder step using stored states, attention and memory
PARAMS
------
decoder_input: previous mel output
RETURNS
-------
mel_output:
gate_output: gate output energies
attention_weights:
"""
cell_input = torch.cat((decoder_input, self.attention_context), -1)
self.attention_hidden, self.attention_cell = self.attention_rnn(
cell_input, (self.attention_hidden, self.attention_cell))
self.attention_hidden = F.dropout(
self.attention_hidden, self.p_attention_dropout, self.training)
attention_weights_cat = torch.cat(
(self.attention_weights.unsqueeze(1),
self.attention_weights_cum.unsqueeze(1)), dim=1)
self.attention_context, self.attention_weights = self.attention_layer(
self.attention_hidden, self.memory, self.processed_memory,
attention_weights_cat, self.mask)
self.attention_weights_cum += self.attention_weights
decoder_input = torch.cat(
(self.attention_hidden, self.attention_context), -1)
self.decoder_hidden, self.decoder_cell = self.decoder_rnn(
decoder_input, (self.decoder_hidden, self.decoder_cell))
self.decoder_hidden = F.dropout(
self.decoder_hidden, self.p_decoder_dropout, self.training)
decoder_hidden_attention_context = torch.cat(
(self.decoder_hidden, self.attention_context), dim=1)
decoder_output = self.linear_projection(
decoder_hidden_attention_context)
gate_prediction = self.gate_layer(decoder_hidden_attention_context)
return decoder_output, gate_prediction, self.attention_weights
def forward(self, memory, decoder_inputs, memory_lengths):
""" Decoder forward pass for training
PARAMS
------
memory: Encoder outputs
decoder_inputs: Decoder inputs for teacher forcing. i.e. mel-specs
memory_lengths: Encoder output lengths for attention masking.
RETURNS
-------
mel_outputs: mel outputs from the decoder
gate_outputs: gate outputs from the decoder
alignments: sequence of attention weights from the decoder
"""
decoder_input = self.get_go_frame(memory).unsqueeze(0)
decoder_inputs = self.parse_decoder_inputs(decoder_inputs)
decoder_inputs = torch.cat((decoder_input, decoder_inputs), dim=0)
decoder_inputs = self.prenet(decoder_inputs)
self.initialize_decoder_states(
memory, mask=~get_mask_from_lengths(memory_lengths))
mel_outputs, gate_outputs, alignments = [], [], []
while len(mel_outputs) < decoder_inputs.size(0) - 1:
decoder_input = decoder_inputs[len(mel_outputs)]
mel_output, gate_output, attention_weights = self.decode(
decoder_input)
mel_outputs += [mel_output.squeeze(1)]
gate_outputs += [gate_output.squeeze(1)]
alignments += [attention_weights]
mel_outputs, gate_outputs, alignments = self.parse_decoder_outputs(
mel_outputs, gate_outputs, alignments)
return mel_outputs, gate_outputs, alignments
def inference(self, memory):
""" Decoder inference
PARAMS
------
memory: Encoder outputs
RETURNS
-------
mel_outputs: mel outputs from the decoder
gate_outputs: gate outputs from the decoder
alignments: sequence of attention weights from the decoder
"""
decoder_input = self.get_go_frame(memory)
self.initialize_decoder_states(memory, mask=None)
mel_outputs, gate_outputs, alignments = [], [], []
while True:
decoder_input = self.prenet(decoder_input)
mel_output, gate_output, alignment = self.decode(decoder_input)
mel_outputs += [mel_output.squeeze(1)]
gate_outputs += [gate_output]
alignments += [alignment]
if torch.sigmoid(gate_output.data) > self.gate_threshold:
break
elif len(mel_outputs) == self.max_decoder_steps:
print("Warning! Reached max decoder steps")
break
decoder_input = mel_output
mel_outputs, gate_outputs, alignments = self.parse_decoder_outputs(
mel_outputs, gate_outputs, alignments)
return mel_outputs, gate_outputs, alignments
class Tacotron2(nn.Module):
def __init__(self, hparams):
super(Tacotron2, self).__init__()
self.mask_padding = hparams.mask_padding
self.fp16_run = hparams.fp16_run
self.n_mel_channels = hparams.n_mel_channels
self.n_frames_per_step = hparams.n_frames_per_step
self.embedding = nn.Embedding(
hparams.n_symbols, hparams.symbols_embedding_dim)
std = sqrt(2.0 / (hparams.n_symbols + hparams.symbols_embedding_dim))
val = sqrt(3.0) * std # uniform bounds for std
self.embedding.weight.data.uniform_(-val, val)
self.encoder = Encoder(hparams)
self.decoder = Decoder(hparams)
self.postnet = Postnet(hparams)
def parse_batch(self, batch, device='cuda'):
text_padded, input_lengths, mel_padded, gate_padded, \
output_lengths = batch
text_padded = text_padded.to(device).long()
input_lengths = input_lengths.to(device).long()
max_len = torch.max(input_lengths.data).item()
mel_padded = mel_padded.to(device).float()
gate_padded = gate_padded.to(device).float()
output_lengths = output_lengths.to(device).long()
return (
(text_padded, input_lengths, mel_padded, max_len, output_lengths),
(mel_padded, gate_padded))
def parse_output(self, outputs, output_lengths=None):
if self.mask_padding and output_lengths is not None:
mask = ~get_mask_from_lengths(output_lengths)
mask = mask.expand(self.n_mel_channels, mask.size(0), mask.size(1))
mask = mask.permute(1, 0, 2)
outputs[0].data.masked_fill_(mask, 0.0)
outputs[1].data.masked_fill_(mask, 0.0)
outputs[2].data.masked_fill_(mask[:, 0, :], 1e3) # gate energies
return outputs
def forward(self, inputs):
text_inputs, text_lengths, mels, max_len, output_lengths = inputs
text_lengths, output_lengths = text_lengths.data, output_lengths.data
embedded_inputs = self.embedding(text_inputs).transpose(1, 2)
encoder_outputs = self.encoder(embedded_inputs, text_lengths)
mel_outputs, gate_outputs, alignments = self.decoder(
encoder_outputs, mels, memory_lengths=text_lengths)
mel_outputs_postnet = self.postnet(mel_outputs)
mel_outputs_postnet = mel_outputs + mel_outputs_postnet
return self.parse_output(
[mel_outputs, mel_outputs_postnet, gate_outputs, alignments],
output_lengths)
def inference(self, inputs):
embedded_inputs = self.embedding(inputs).transpose(1, 2)
encoder_outputs = self.encoder.inference(embedded_inputs)
mel_outputs, gate_outputs, alignments = self.decoder.inference(
encoder_outputs)
mel_outputs_postnet = self.postnet(mel_outputs)
mel_outputs_postnet = mel_outputs + mel_outputs_postnet
outputs = self.parse_output(
[mel_outputs, mel_outputs_postnet, gate_outputs, alignments])
return outputs
|
"""
BSD 3-Clause License
Copyright (c) 2017, Prem Seetharaman
All rights reserved.
* Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""
import torch
import numpy as np
import torch.nn.functional as F
from torch.autograd import Variable
from scipy.signal import get_window
from librosa.util import pad_center, tiny
from .audio_processing import window_sumsquare
class STFT(torch.nn.Module):
"""adapted from Prem Seetharaman's https://github.com/pseeth/pytorch-stft"""
def __init__(self, filter_length=800, hop_length=200, win_length=800,
window='hann'):
super(STFT, self).__init__()
self.filter_length = filter_length
self.hop_length = hop_length
self.win_length = win_length
self.window = window
self.forward_transform = None
scale = self.filter_length / self.hop_length
fourier_basis = np.fft.fft(np.eye(self.filter_length))
cutoff = int((self.filter_length / 2 + 1))
fourier_basis = np.vstack([np.real(fourier_basis[:cutoff, :]),
np.imag(fourier_basis[:cutoff, :])])
forward_basis = torch.FloatTensor(fourier_basis[:, None, :])
inverse_basis = torch.FloatTensor(
np.linalg.pinv(scale * fourier_basis).T[:, None, :])
if window is not None:
assert(filter_length >= win_length)
# get window and zero center pad it to filter_length
fft_window = get_window(window, win_length, fftbins=True)
fft_window = pad_center(fft_window, filter_length)
fft_window = torch.from_numpy(fft_window).float()
# window the bases
forward_basis *= fft_window
inverse_basis *= fft_window
self.register_buffer('forward_basis', forward_basis.float())
self.register_buffer('inverse_basis', inverse_basis.float())
def transform(self, input_data):
num_batches = input_data.size(0)
num_samples = input_data.size(1)
self.num_samples = num_samples
# similar to librosa, reflect-pad the input
input_data = input_data.view(num_batches, 1, num_samples)
input_data = F.pad(
input_data.unsqueeze(1),
(int(self.filter_length / 2), int(self.filter_length / 2), 0, 0),
mode='reflect')
input_data = input_data.squeeze(1)
forward_transform = F.conv1d(
input_data,
Variable(self.forward_basis, requires_grad=False),
stride=self.hop_length,
padding=0)
cutoff = int((self.filter_length / 2) + 1)
real_part = forward_transform[:, :cutoff, :]
imag_part = forward_transform[:, cutoff:, :]
magnitude = torch.sqrt(real_part**2 + imag_part**2)
phase = torch.autograd.Variable(
torch.atan2(imag_part.data, real_part.data))
return magnitude, phase
def inverse(self, magnitude, phase):
recombine_magnitude_phase = torch.cat(
[magnitude*torch.cos(phase), magnitude*torch.sin(phase)], dim=1)
inverse_transform = F.conv_transpose1d(
recombine_magnitude_phase,
Variable(self.inverse_basis, requires_grad=False),
stride=self.hop_length,
padding=0)
if self.window is not None:
window_sum = window_sumsquare(
self.window, magnitude.size(-1), hop_length=self.hop_length,
win_length=self.win_length, n_fft=self.filter_length,
dtype=np.float32)
# remove modulation effects
approx_nonzero_indices = torch.from_numpy(
np.where(window_sum > tiny(window_sum))[0])
window_sum = torch.autograd.Variable(
torch.from_numpy(window_sum), requires_grad=False)
window_sum = window_sum.cuda() if magnitude.is_cuda else window_sum
inverse_transform[:, :, approx_nonzero_indices] /= window_sum[approx_nonzero_indices]
# scale by hop ratio
inverse_transform *= float(self.filter_length) / self.hop_length
inverse_transform = inverse_transform[:, :, int(self.filter_length/2):]
inverse_transform = inverse_transform[:, :, :-int(self.filter_length/2):]
return inverse_transform
def forward(self, input_data):
self.magnitude, self.phase = self.transform(input_data)
reconstruction = self.inverse(self.magnitude, self.phase)
return reconstruction
|
import torch
import torch.distributed as dist
from torch.nn.modules import Module
from torch.autograd import Variable
def _flatten_dense_tensors(tensors):
"""Flatten dense tensors into a contiguous 1D buffer. Assume tensors are of
same dense type.
Since inputs are dense, the resulting tensor will be a concatenated 1D
buffer. Element-wise operation on this buffer will be equivalent to
operating individually.
Arguments:
tensors (Iterable[Tensor]): dense tensors to flatten.
Returns:
A contiguous 1D buffer containing input tensors.
"""
if len(tensors) == 1:
return tensors[0].contiguous().view(-1)
flat = torch.cat([t.contiguous().view(-1) for t in tensors], dim=0)
return flat
def _unflatten_dense_tensors(flat, tensors):
"""View a flat buffer using the sizes of tensors. Assume that tensors are of
same dense type, and that flat is given by _flatten_dense_tensors.
Arguments:
flat (Tensor): flattened dense tensors to unflatten.
tensors (Iterable[Tensor]): dense tensors whose sizes will be used to
unflatten flat.
Returns:
Unflattened dense tensors with sizes same as tensors and values from
flat.
"""
outputs = []
offset = 0
for tensor in tensors:
numel = tensor.numel()
outputs.append(flat.narrow(0, offset, numel).view_as(tensor))
offset += numel
return tuple(outputs)
'''
This version of DistributedDataParallel is designed to be used in conjunction with the multiproc.py
launcher included with this example. It assumes that your run is using multiprocess with 1
GPU/process, that the model is on the correct device, and that torch.set_device has been
used to set the device.
Parameters are broadcasted to the other processes on initialization of DistributedDataParallel,
and will be allreduced at the finish of the backward pass.
'''
class DistributedDataParallel(Module):
def __init__(self, module):
super(DistributedDataParallel, self).__init__()
#fallback for PyTorch 0.3
if not hasattr(dist, '_backend'):
self.warn_on_half = True
else:
self.warn_on_half = True if dist._backend == dist.dist_backend.GLOO else False
self.module = module
for p in self.module.state_dict().values():
if not torch.is_tensor(p):
continue
dist.broadcast(p, 0)
def allreduce_params():
if(self.needs_reduction):
self.needs_reduction = False
buckets = {}
for param in self.module.parameters():
if param.requires_grad and param.grad is not None:
tp = type(param.data)
if tp not in buckets:
buckets[tp] = []
buckets[tp].append(param)
if self.warn_on_half:
if torch.cuda.HalfTensor in buckets:
print("WARNING: gloo dist backend for half parameters may be extremely slow." +
" It is recommended to use the NCCL backend in this case. This currently requires" +
"PyTorch built from top of tree master.")
self.warn_on_half = False
for tp in buckets:
bucket = buckets[tp]
grads = [param.grad.data for param in bucket]
coalesced = _flatten_dense_tensors(grads)
dist.all_reduce(coalesced)
coalesced /= dist.get_world_size()
for buf, synced in zip(grads, _unflatten_dense_tensors(coalesced, grads)):
buf.copy_(synced)
for param in list(self.module.parameters()):
def allreduce_hook(*unused):
param._execution_engine.queue_callback(allreduce_params)
if param.requires_grad:
param.register_hook(allreduce_hook)
def forward(self, *inputs, **kwargs):
self.needs_reduction = True
return self.module(*inputs, **kwargs)
'''
def _sync_buffers(self):
buffers = list(self.module._all_buffers())
if len(buffers) > 0:
# cross-node buffer sync
flat_buffers = _flatten_dense_tensors(buffers)
dist.broadcast(flat_buffers, 0)
for buf, synced in zip(buffers, _unflatten_dense_tensors(flat_buffers, buffers)):
buf.copy_(synced)
def train(self, mode=True):
# Clear NCCL communicator and CUDA event cache of the default group ID,
# These cache will be recreated at the later call. This is currently a
# work-around for a potential NCCL deadlock.
if dist._backend == dist.dist_backend.NCCL:
dist._clear_group_cache()
super(DistributedDataParallel, self).train(mode)
self.module.train(mode)
'''
'''
Modifies existing model to do gradient allreduce, but doesn't change class
so you don't need "module"
'''
def apply_gradient_allreduce(module):
if not hasattr(dist, '_backend'):
module.warn_on_half = True
else:
module.warn_on_half = True if dist._backend == dist.dist_backend.GLOO else False
for p in module.state_dict().values():
if not torch.is_tensor(p):
continue
dist.broadcast(p, 0)
def allreduce_params():
if(module.needs_reduction):
module.needs_reduction = False
buckets = {}
for param in module.parameters():
if param.requires_grad and param.grad is not None:
tp = param.data.dtype
if tp not in buckets:
buckets[tp] = []
buckets[tp].append(param)
if module.warn_on_half:
if torch.cuda.HalfTensor in buckets:
print("WARNING: gloo dist backend for half parameters may be extremely slow." +
" It is recommended to use the NCCL backend in this case. This currently requires" +
"PyTorch built from top of tree master.")
module.warn_on_half = False
for tp in buckets:
bucket = buckets[tp]
grads = [param.grad.data for param in bucket]
coalesced = _flatten_dense_tensors(grads)
dist.all_reduce(coalesced)
coalesced /= dist.get_world_size()
for buf, synced in zip(grads, _unflatten_dense_tensors(coalesced, grads)):
buf.copy_(synced)
for param in list(module.parameters()):
def allreduce_hook(*unused):
Variable._execution_engine.queue_callback(allreduce_params)
if param.requires_grad:
param.register_hook(allreduce_hook)
def set_needs_reduction(self, input, output):
self.needs_reduction = True
module.register_forward_hook(set_needs_reduction)
return module
|
import random
import numpy as np
import torch
import torch.utils.data
from .layers import TacotronSTFT
from .tacotron2_utils import load_wav_to_torch, load_filepaths_and_text
from .text import text_to_sequence
class TextMelLoader(torch.utils.data.Dataset):
"""
1) loads audio,text pairs
2) normalizes text and converts them to sequences of one-hot vectors
3) computes mel-spectrograms from audio files.
"""
def __init__(self, audiopaths_and_text, hparams):
self.audiopaths_and_text = load_filepaths_and_text(audiopaths_and_text)
self.text_cleaners = hparams.text_cleaners
self.max_wav_value = hparams.max_wav_value
self.sampling_rate = hparams.sampling_rate
self.load_mel_from_disk = hparams.load_mel_from_disk
self.stft = TacotronSTFT(
hparams.filter_length, hparams.hop_length, hparams.win_length,
hparams.n_mel_channels, hparams.sampling_rate, hparams.mel_fmin,
hparams.mel_fmax)
random.shuffle(self.audiopaths_and_text)
def get_mel_text_pair(self, audiopath_and_text):
# separate filename and text
audiopath, text = audiopath_and_text[0], audiopath_and_text[1]
text = self.get_text(text)
mel = self.get_mel(audiopath)
return (text, mel)
def get_mel(self, filename):
if not self.load_mel_from_disk:
audio, sampling_rate = load_wav_to_torch(filename)
if sampling_rate != self.stft.sampling_rate:
raise ValueError("{} {} SR doesn't match target {} SR".format(
sampling_rate, self.stft.sampling_rate))
audio_norm = audio / self.max_wav_value
audio_norm = audio_norm.unsqueeze(0)
audio_norm = torch.autograd.Variable(audio_norm, requires_grad=False)
melspec = self.stft.mel_spectrogram(audio_norm)
melspec = torch.squeeze(melspec, 0)
else:
melspec = torch.from_numpy(np.load(filename))
assert melspec.size(0) == self.stft.n_mel_channels, (
'Mel dimension mismatch: given {}, expected {}'.format(
melspec.size(0), self.stft.n_mel_channels))
return melspec
def get_text(self, text):
text_norm = torch.IntTensor(text_to_sequence(text, self.text_cleaners))
return text_norm
def __getitem__(self, index):
return self.get_mel_text_pair(self.audiopaths_and_text[index])
def __len__(self):
return len(self.audiopaths_and_text)
class TextMelCollate():
""" Zero-pads model inputs and targets based on number of frames per setep
"""
def __init__(self, n_frames_per_step):
self.n_frames_per_step = n_frames_per_step
def __call__(self, batch):
"""Collate's training batch from normalized text and mel-spectrogram
PARAMS
------
batch: [text_normalized, mel_normalized]
"""
# Right zero-pad all one-hot text sequences to max input length
input_lengths, ids_sorted_decreasing = torch.sort(
torch.LongTensor([len(x[0]) for x in batch]),
dim=0, descending=True)
max_input_len = input_lengths[0]
text_padded = torch.LongTensor(len(batch), max_input_len)
text_padded.zero_()
for i in range(len(ids_sorted_decreasing)):
text = batch[ids_sorted_decreasing[i]][0]
text_padded[i, :text.size(0)] = text
# Right zero-pad mel-spec
num_mels = batch[0][1].size(0)
max_target_len = max([x[1].size(1) for x in batch])
if max_target_len % self.n_frames_per_step != 0:
max_target_len += self.n_frames_per_step - max_target_len % self.n_frames_per_step
assert max_target_len % self.n_frames_per_step == 0
# include mel padded and gate padded
mel_padded = torch.FloatTensor(len(batch), num_mels, max_target_len)
mel_padded.zero_()
gate_padded = torch.FloatTensor(len(batch), max_target_len)
gate_padded.zero_()
output_lengths = torch.LongTensor(len(batch))
for i in range(len(ids_sorted_decreasing)):
mel = batch[ids_sorted_decreasing[i]][1]
mel_padded[i, :, :mel.size(1)] = mel
gate_padded[i, mel.size(1)-1:] = 1
output_lengths[i] = mel.size(1)
return text_padded, input_lengths, mel_padded, gate_padded, \
output_lengths
|
from torch import nn
class Tacotron2Loss(nn.Module):
def __init__(self):
super(Tacotron2Loss, self).__init__()
def forward(self, model_output, targets):
mel_target, gate_target = targets[0], targets[1]
mel_target.requires_grad = False
gate_target.requires_grad = False
gate_target = gate_target.view(-1, 1)
mel_out, mel_out_postnet, gate_out, _ = model_output
gate_out = gate_out.view(-1, 1)
mel_loss = nn.MSELoss()(mel_out, mel_target) + \
nn.MSELoss()(mel_out_postnet, mel_target)
gate_loss = nn.BCEWithLogitsLoss()(gate_out, gate_target)
return mel_loss + gate_loss
|
import os
from pathlib import Path
import subprocess
import sys
from utils import s3_utils
def check_data_dir():
current_dir = Path(os.path.dirname(os.path.realpath(__file__)))
tacotron2_data_dir = os.path.join(current_dir.parent.parent, "data", ".data", "tacotron2-minimal")
assert os.path.exists(tacotron2_data_dir), "Couldn't find tacotron2 minimal data dir, please run install.py again."
def pip_install_requirements():
subprocess.check_call([sys.executable, '-m', 'pip', 'install', '-q', '-r', 'requirements.txt'])
if __name__ == '__main__':
pip_install_requirements()
s3_utils.checkout_s3_data("INPUT_TARBALLS", "tacotron2-minimal.tar.gz", decompress=True)
|
import torch
from librosa.filters import mel as librosa_mel_fn
from .audio_processing import dynamic_range_compression
from .audio_processing import dynamic_range_decompression
from .stft import STFT
class LinearNorm(torch.nn.Module):
def __init__(self, in_dim, out_dim, bias=True, w_init_gain='linear'):
super(LinearNorm, self).__init__()
self.linear_layer = torch.nn.Linear(in_dim, out_dim, bias=bias)
torch.nn.init.xavier_uniform_(
self.linear_layer.weight,
gain=torch.nn.init.calculate_gain(w_init_gain))
def forward(self, x):
return self.linear_layer(x)
class ConvNorm(torch.nn.Module):
def __init__(self, in_channels, out_channels, kernel_size=1, stride=1,
padding=None, dilation=1, bias=True, w_init_gain='linear'):
super(ConvNorm, self).__init__()
if padding is None:
assert(kernel_size % 2 == 1)
padding = int(dilation * (kernel_size - 1) / 2)
self.conv = torch.nn.Conv1d(in_channels, out_channels,
kernel_size=kernel_size, stride=stride,
padding=padding, dilation=dilation,
bias=bias)
torch.nn.init.xavier_uniform_(
self.conv.weight, gain=torch.nn.init.calculate_gain(w_init_gain))
def forward(self, signal):
conv_signal = self.conv(signal)
return conv_signal
class TacotronSTFT(torch.nn.Module):
def __init__(self, filter_length=1024, hop_length=256, win_length=1024,
n_mel_channels=80, sampling_rate=22050, mel_fmin=0.0,
mel_fmax=8000.0):
super(TacotronSTFT, self).__init__()
self.n_mel_channels = n_mel_channels
self.sampling_rate = sampling_rate
self.stft_fn = STFT(filter_length, hop_length, win_length)
mel_basis = librosa_mel_fn(
sampling_rate, filter_length, n_mel_channels, mel_fmin, mel_fmax)
mel_basis = torch.from_numpy(mel_basis).float()
self.register_buffer('mel_basis', mel_basis)
def spectral_normalize(self, magnitudes):
output = dynamic_range_compression(magnitudes)
return output
def spectral_de_normalize(self, magnitudes):
output = dynamic_range_decompression(magnitudes)
return output
def mel_spectrogram(self, y):
"""Computes mel-spectrograms from a batch of waves
PARAMS
------
y: Variable(torch.FloatTensor) with shape (B, T) in range [-1, 1]
RETURNS
-------
mel_output: torch.FloatTensor of shape (B, n_mel_channels, T)
"""
assert(torch.min(y.data) >= -1)
assert(torch.max(y.data) <= 1)
magnitudes, phases = self.stft_fn.transform(y)
magnitudes = magnitudes.data
mel_output = torch.matmul(self.mel_basis, magnitudes)
mel_output = self.spectral_normalize(mel_output)
return mel_output
|
import time
import torch
import sys
import subprocess
argslist = list(sys.argv)[1:]
num_gpus = torch.cuda.device_count()
argslist.append('--n_gpus={}'.format(num_gpus))
workers = []
job_id = time.strftime("%Y_%m_%d-%H%M%S")
argslist.append("--group_name=group_{}".format(job_id))
for i in range(num_gpus):
argslist.append('--rank={}'.format(i))
stdout = None if i == 0 else open("logs/{}_GPU_{}.log".format(job_id, i),
"w")
print(argslist)
p = subprocess.Popen([str(sys.executable)]+argslist, stdout=stdout)
workers.append(p)
argslist = argslist[:-1]
for p in workers:
p.wait()
|
import numpy as np
from scipy.io.wavfile import read
import torch
from pathlib import Path
def get_mask_from_lengths(lengths):
max_len = torch.max(lengths).item()
ids = torch.arange(0, max_len, device=lengths.device)
mask = (ids < lengths.unsqueeze(1)).bool()
return mask
def load_wav_to_torch(full_path):
sampling_rate, data = read(full_path)
return torch.FloatTensor(data.astype(np.float32)), sampling_rate
def load_filepaths_and_text(filename, split="|"):
root = str(Path(__file__).parent)
with open(filename, encoding='utf-8') as f:
filepaths_and_text = []
for line in f:
filename, *text = line.strip().split(split)
filename = f'{root}/{filename}'
filepaths_and_text.append((filename, *text))
return filepaths_and_text
def to_gpu(x):
x = x.contiguous()
if torch.cuda.is_available():
x = x.cuda(non_blocking=True)
return torch.autograd.Variable(x)
|
import torch
class LossScaler:
def __init__(self, scale=1):
self.cur_scale = scale
# `params` is a list / generator of torch.Variable
def has_overflow(self, params):
return False
# `x` is a torch.Tensor
def _has_inf_or_nan(x):
return False
# `overflow` is boolean indicating whether we overflowed in gradient
def update_scale(self, overflow):
pass
@property
def loss_scale(self):
return self.cur_scale
def scale_gradient(self, module, grad_in, grad_out):
return tuple(self.loss_scale * g for g in grad_in)
def backward(self, loss):
scaled_loss = loss*self.loss_scale
scaled_loss.backward()
class DynamicLossScaler:
def __init__(self,
init_scale=2**32,
scale_factor=2.,
scale_window=1000):
self.cur_scale = init_scale
self.cur_iter = 0
self.last_overflow_iter = -1
self.scale_factor = scale_factor
self.scale_window = scale_window
# `params` is a list / generator of torch.Variable
def has_overflow(self, params):
# return False
for p in params:
if p.grad is not None and DynamicLossScaler._has_inf_or_nan(p.grad.data):
return True
return False
# `x` is a torch.Tensor
def _has_inf_or_nan(x):
cpu_sum = float(x.float().sum())
if cpu_sum == float('inf') or cpu_sum == -float('inf') or cpu_sum != cpu_sum:
return True
return False
# `overflow` is boolean indicating whether we overflowed in gradient
def update_scale(self, overflow):
if overflow:
#self.cur_scale /= self.scale_factor
self.cur_scale = max(self.cur_scale/self.scale_factor, 1)
self.last_overflow_iter = self.cur_iter
else:
if (self.cur_iter - self.last_overflow_iter) % self.scale_window == 0:
self.cur_scale *= self.scale_factor
# self.cur_scale = 1
self.cur_iter += 1
@property
def loss_scale(self):
return self.cur_scale
def scale_gradient(self, module, grad_in, grad_out):
return tuple(self.loss_scale * g for g in grad_in)
def backward(self, loss):
scaled_loss = loss*self.loss_scale
scaled_loss.backward()
##############################################################
# Example usage below here -- assuming it's in a separate file
##############################################################
if __name__ == "__main__":
import torch
from torch.autograd import Variable
from dynamic_loss_scaler import DynamicLossScaler
# N is batch size; D_in is input dimension;
# H is hidden dimension; D_out is output dimension.
N, D_in, H, D_out = 64, 1000, 100, 10
# Create random Tensors to hold inputs and outputs, and wrap them in Variables.
x = Variable(torch.randn(N, D_in), requires_grad=False)
y = Variable(torch.randn(N, D_out), requires_grad=False)
w1 = Variable(torch.randn(D_in, H), requires_grad=True)
w2 = Variable(torch.randn(H, D_out), requires_grad=True)
parameters = [w1, w2]
learning_rate = 1e-6
optimizer = torch.optim.SGD(parameters, lr=learning_rate)
loss_scaler = DynamicLossScaler()
for t in range(500):
y_pred = x.mm(w1).clamp(min=0).mm(w2)
loss = (y_pred - y).pow(2).sum() * loss_scaler.loss_scale
print('Iter {} loss scale: {}'.format(t, loss_scaler.loss_scale))
print('Iter {} scaled loss: {}'.format(t, loss.data[0]))
print('Iter {} unscaled loss: {}'.format(t, loss.data[0] / loss_scaler.loss_scale))
# Run backprop
optimizer.zero_grad()
loss.backward()
# Check for overflow
has_overflow = DynamicLossScaler.has_overflow(parameters)
# If no overflow, unscale grad and update as usual
if not has_overflow:
for param in parameters:
param.grad.data.mul_(1. / loss_scaler.loss_scale)
optimizer.step()
# Otherwise, don't do anything -- ie, skip iteration
else:
print('OVERFLOW!')
# Update loss scale for next iteration
loss_scaler.update_scale(has_overflow)
|
# *****************************************************************************
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the NVIDIA CORPORATION nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# *****************************************************************************
import copy
import torch
from torch.autograd import Variable
import torch.nn.functional as F
@torch.jit.script
def fused_add_tanh_sigmoid_multiply(input_a, input_b, n_channels):
n_channels_int = n_channels[0]
in_act = input_a+input_b
t_act = torch.tanh(in_act[:, :n_channels_int, :])
s_act = torch.sigmoid(in_act[:, n_channels_int:, :])
acts = t_act * s_act
return acts
class WaveGlowLoss(torch.nn.Module):
def __init__(self, sigma=1.0):
super(WaveGlowLoss, self).__init__()
self.sigma = sigma
def forward(self, model_output):
z, log_s_list, log_det_W_list = model_output
for i, log_s in enumerate(log_s_list):
if i == 0:
log_s_total = torch.sum(log_s)
log_det_W_total = log_det_W_list[i]
else:
log_s_total = log_s_total + torch.sum(log_s)
log_det_W_total += log_det_W_list[i]
loss = torch.sum(z*z)/(2*self.sigma*self.sigma) - log_s_total - log_det_W_total
return loss/(z.size(0)*z.size(1)*z.size(2))
class Invertible1x1Conv(torch.nn.Module):
"""
The layer outputs both the convolution, and the log determinant
of its weight matrix. If reverse=True it does convolution with
inverse
"""
def __init__(self, c):
super(Invertible1x1Conv, self).__init__()
self.conv = torch.nn.Conv1d(c, c, kernel_size=1, stride=1, padding=0,
bias=False)
# Sample a random orthonormal matrix to initialize weights
W = torch.qr(torch.FloatTensor(c, c).normal_())[0]
# Ensure determinant is 1.0 not -1.0
if torch.det(W) < 0:
W[:,0] = -1*W[:,0]
W = W.view(c, c, 1)
self.conv.weight.data = W
def forward(self, z, reverse=False):
# shape
batch_size, group_size, n_of_groups = z.size()
W = self.conv.weight.squeeze()
if reverse:
if not hasattr(self, 'W_inverse'):
# Reverse computation
W_inverse = W.float().inverse()
W_inverse = Variable(W_inverse[..., None])
if z.type() == 'torch.cuda.HalfTensor':
W_inverse = W_inverse.half()
self.W_inverse = W_inverse
z = F.conv1d(z, self.W_inverse, bias=None, stride=1, padding=0)
return z
else:
# Forward computation
log_det_W = batch_size * n_of_groups * torch.logdet(W)
z = self.conv(z)
return z, log_det_W
class WN(torch.nn.Module):
"""
This is the WaveNet like layer for the affine coupling. The primary difference
from WaveNet is the convolutions need not be causal. There is also no dilation
size reset. The dilation only doubles on each layer
"""
def __init__(self, n_in_channels, n_mel_channels, n_layers, n_channels,
kernel_size):
super(WN, self).__init__()
assert(kernel_size % 2 == 1)
assert(n_channels % 2 == 0)
self.n_layers = n_layers
self.n_channels = n_channels
self.in_layers = torch.nn.ModuleList()
self.res_skip_layers = torch.nn.ModuleList()
start = torch.nn.Conv1d(n_in_channels, n_channels, 1)
start = torch.nn.utils.weight_norm(start, name='weight')
self.start = start
# Initializing last layer to 0 makes the affine coupling layers
# do nothing at first. This helps with training stability
end = torch.nn.Conv1d(n_channels, 2*n_in_channels, 1)
end.weight.data.zero_()
end.bias.data.zero_()
self.end = end
cond_layer = torch.nn.Conv1d(n_mel_channels, 2*n_channels*n_layers, 1)
self.cond_layer = torch.nn.utils.weight_norm(cond_layer, name='weight')
for i in range(n_layers):
dilation = 2 ** i
padding = int((kernel_size*dilation - dilation)/2)
in_layer = torch.nn.Conv1d(n_channels, 2*n_channels, kernel_size,
dilation=dilation, padding=padding)
in_layer = torch.nn.utils.weight_norm(in_layer, name='weight')
self.in_layers.append(in_layer)
# last one is not necessary
if i < n_layers - 1:
res_skip_channels = 2*n_channels
else:
res_skip_channels = n_channels
res_skip_layer = torch.nn.Conv1d(n_channels, res_skip_channels, 1)
res_skip_layer = torch.nn.utils.weight_norm(res_skip_layer, name='weight')
self.res_skip_layers.append(res_skip_layer)
def forward(self, forward_input):
audio, spect = forward_input
audio = self.start(audio)
output = torch.zeros_like(audio)
n_channels_tensor = torch.IntTensor([self.n_channels])
spect = self.cond_layer(spect)
for i in range(self.n_layers):
spect_offset = i*2*self.n_channels
acts = fused_add_tanh_sigmoid_multiply(
self.in_layers[i](audio),
spect[:,spect_offset:spect_offset+2*self.n_channels,:],
n_channels_tensor)
res_skip_acts = self.res_skip_layers[i](acts)
if i < self.n_layers - 1:
audio = audio + res_skip_acts[:,:self.n_channels,:]
output = output + res_skip_acts[:,self.n_channels:,:]
else:
output = output + res_skip_acts
return self.end(output)
class WaveGlow(torch.nn.Module):
def __init__(self, n_mel_channels, n_flows, n_group, n_early_every,
n_early_size, WN_config):
super(WaveGlow, self).__init__()
self.upsample = torch.nn.ConvTranspose1d(n_mel_channels,
n_mel_channels,
1024, stride=256)
assert(n_group % 2 == 0)
self.n_flows = n_flows
self.n_group = n_group
self.n_early_every = n_early_every
self.n_early_size = n_early_size
self.WN = torch.nn.ModuleList()
self.convinv = torch.nn.ModuleList()
n_half = int(n_group/2)
# Set up layers with the right sizes based on how many dimensions
# have been output already
n_remaining_channels = n_group
for k in range(n_flows):
if k % self.n_early_every == 0 and k > 0:
n_half = n_half - int(self.n_early_size/2)
n_remaining_channels = n_remaining_channels - self.n_early_size
self.convinv.append(Invertible1x1Conv(n_remaining_channels))
self.WN.append(WN(n_half, n_mel_channels*n_group, **WN_config))
self.n_remaining_channels = n_remaining_channels # Useful during inference
def forward(self, forward_input):
"""
forward_input[0] = mel_spectrogram: batch x n_mel_channels x frames
forward_input[1] = audio: batch x time
"""
spect, audio = forward_input
# Upsample spectrogram to size of audio
spect = self.upsample(spect)
assert(spect.size(2) >= audio.size(1))
if spect.size(2) > audio.size(1):
spect = spect[:, :, :audio.size(1)]
spect = spect.unfold(2, self.n_group, self.n_group).permute(0, 2, 1, 3)
spect = spect.contiguous().view(spect.size(0), spect.size(1), -1).permute(0, 2, 1)
audio = audio.unfold(1, self.n_group, self.n_group).permute(0, 2, 1)
output_audio = []
log_s_list = []
log_det_W_list = []
for k in range(self.n_flows):
if k % self.n_early_every == 0 and k > 0:
output_audio.append(audio[:,:self.n_early_size,:])
audio = audio[:,self.n_early_size:,:]
audio, log_det_W = self.convinv[k](audio)
log_det_W_list.append(log_det_W)
n_half = int(audio.size(1)/2)
audio_0 = audio[:,:n_half,:]
audio_1 = audio[:,n_half:,:]
output = self.WN[k]((audio_0, spect))
log_s = output[:, n_half:, :]
b = output[:, :n_half, :]
audio_1 = torch.exp(log_s)*audio_1 + b
log_s_list.append(log_s)
audio = torch.cat([audio_0, audio_1],1)
output_audio.append(audio)
return torch.cat(output_audio,1), log_s_list, log_det_W_list
def infer(self, spect, sigma=1.0):
spect = self.upsample(spect)
# trim conv artifacts. maybe pad spec to kernel multiple
time_cutoff = self.upsample.kernel_size[0] - self.upsample.stride[0]
spect = spect[:, :, :-time_cutoff]
spect = spect.unfold(2, self.n_group, self.n_group).permute(0, 2, 1, 3)
spect = spect.contiguous().view(spect.size(0), spect.size(1), -1).permute(0, 2, 1)
if spect.type() == 'torch.cuda.HalfTensor':
audio = torch.cuda.HalfTensor(spect.size(0),
self.n_remaining_channels,
spect.size(2)).normal_()
else:
audio = torch.cuda.FloatTensor(spect.size(0),
self.n_remaining_channels,
spect.size(2)).normal_()
audio = torch.autograd.Variable(sigma*audio)
for k in reversed(range(self.n_flows)):
n_half = int(audio.size(1)/2)
audio_0 = audio[:,:n_half,:]
audio_1 = audio[:,n_half:,:]
output = self.WN[k]((audio_0, spect))
s = output[:, n_half:, :]
b = output[:, :n_half, :]
audio_1 = (audio_1 - b)/torch.exp(s)
audio = torch.cat([audio_0, audio_1],1)
audio = self.convinv[k](audio, reverse=True)
if k % self.n_early_every == 0 and k > 0:
if spect.type() == 'torch.cuda.HalfTensor':
z = torch.cuda.HalfTensor(spect.size(0), self.n_early_size, spect.size(2)).normal_()
else:
z = torch.cuda.FloatTensor(spect.size(0), self.n_early_size, spect.size(2)).normal_()
audio = torch.cat((sigma*z, audio),1)
audio = audio.permute(0,2,1).contiguous().view(audio.size(0), -1).data
return audio
@staticmethod
def remove_weightnorm(model):
waveglow = model
for WN in waveglow.WN:
WN.start = torch.nn.utils.remove_weight_norm(WN.start)
WN.in_layers = remove(WN.in_layers)
WN.cond_layer = torch.nn.utils.remove_weight_norm(WN.cond_layer)
WN.res_skip_layers = remove(WN.res_skip_layers)
return waveglow
def remove(conv_list):
new_conv_list = torch.nn.ModuleList()
for old_conv in conv_list:
old_conv = torch.nn.utils.remove_weight_norm(old_conv)
new_conv_list.append(old_conv)
return new_conv_list
|
import copy
import torch
from glow import Invertible1x1Conv, remove
@torch.jit.script
def fused_add_tanh_sigmoid_multiply(input_a, input_b, n_channels):
n_channels_int = n_channels[0]
in_act = input_a+input_b
t_act = torch.tanh(in_act[:, :n_channels_int, :])
s_act = torch.sigmoid(in_act[:, n_channels_int:, :])
acts = t_act * s_act
return acts
class WN(torch.nn.Module):
"""
This is the WaveNet like layer for the affine coupling. The primary difference
from WaveNet is the convolutions need not be causal. There is also no dilation
size reset. The dilation only doubles on each layer
"""
def __init__(self, n_in_channels, n_mel_channels, n_layers, n_channels,
kernel_size):
super(WN, self).__init__()
assert(kernel_size % 2 == 1)
assert(n_channels % 2 == 0)
self.n_layers = n_layers
self.n_channels = n_channels
self.in_layers = torch.nn.ModuleList()
self.res_skip_layers = torch.nn.ModuleList()
self.cond_layers = torch.nn.ModuleList()
start = torch.nn.Conv1d(n_in_channels, n_channels, 1)
start = torch.nn.utils.weight_norm(start, name='weight')
self.start = start
# Initializing last layer to 0 makes the affine coupling layers
# do nothing at first. This helps with training stability
end = torch.nn.Conv1d(n_channels, 2*n_in_channels, 1)
end.weight.data.zero_()
end.bias.data.zero_()
self.end = end
for i in range(n_layers):
dilation = 2 ** i
padding = int((kernel_size*dilation - dilation)/2)
in_layer = torch.nn.Conv1d(n_channels, 2*n_channels, kernel_size,
dilation=dilation, padding=padding)
in_layer = torch.nn.utils.weight_norm(in_layer, name='weight')
self.in_layers.append(in_layer)
cond_layer = torch.nn.Conv1d(n_mel_channels, 2*n_channels, 1)
cond_layer = torch.nn.utils.weight_norm(cond_layer, name='weight')
self.cond_layers.append(cond_layer)
# last one is not necessary
if i < n_layers - 1:
res_skip_channels = 2*n_channels
else:
res_skip_channels = n_channels
res_skip_layer = torch.nn.Conv1d(n_channels, res_skip_channels, 1)
res_skip_layer = torch.nn.utils.weight_norm(res_skip_layer, name='weight')
self.res_skip_layers.append(res_skip_layer)
def forward(self, forward_input):
audio, spect = forward_input
audio = self.start(audio)
for i in range(self.n_layers):
acts = fused_add_tanh_sigmoid_multiply(
self.in_layers[i](audio),
self.cond_layers[i](spect),
torch.IntTensor([self.n_channels]))
res_skip_acts = self.res_skip_layers[i](acts)
if i < self.n_layers - 1:
audio = res_skip_acts[:,:self.n_channels,:] + audio
skip_acts = res_skip_acts[:,self.n_channels:,:]
else:
skip_acts = res_skip_acts
if i == 0:
output = skip_acts
else:
output = skip_acts + output
return self.end(output)
class WaveGlow(torch.nn.Module):
def __init__(self, n_mel_channels, n_flows, n_group, n_early_every,
n_early_size, WN_config):
super(WaveGlow, self).__init__()
self.upsample = torch.nn.ConvTranspose1d(n_mel_channels,
n_mel_channels,
1024, stride=256)
assert(n_group % 2 == 0)
self.n_flows = n_flows
self.n_group = n_group
self.n_early_every = n_early_every
self.n_early_size = n_early_size
self.WN = torch.nn.ModuleList()
self.convinv = torch.nn.ModuleList()
n_half = int(n_group/2)
# Set up layers with the right sizes based on how many dimensions
# have been output already
n_remaining_channels = n_group
for k in range(n_flows):
if k % self.n_early_every == 0 and k > 0:
n_half = n_half - int(self.n_early_size/2)
n_remaining_channels = n_remaining_channels - self.n_early_size
self.convinv.append(Invertible1x1Conv(n_remaining_channels))
self.WN.append(WN(n_half, n_mel_channels*n_group, **WN_config))
self.n_remaining_channels = n_remaining_channels # Useful during inference
def forward(self, forward_input):
return None
"""
forward_input[0] = audio: batch x time
forward_input[1] = upsamp_spectrogram: batch x n_cond_channels x time
"""
"""
spect, audio = forward_input
# Upsample spectrogram to size of audio
spect = self.upsample(spect)
assert(spect.size(2) >= audio.size(1))
if spect.size(2) > audio.size(1):
spect = spect[:, :, :audio.size(1)]
spect = spect.unfold(2, self.n_group, self.n_group).permute(0, 2, 1, 3)
spect = spect.contiguous().view(spect.size(0), spect.size(1), -1).permute(0, 2, 1)
audio = audio.unfold(1, self.n_group, self.n_group).permute(0, 2, 1)
output_audio = []
s_list = []
s_conv_list = []
for k in range(self.n_flows):
if k%4 == 0 and k > 0:
output_audio.append(audio[:,:self.n_multi,:])
audio = audio[:,self.n_multi:,:]
# project to new basis
audio, s = self.convinv[k](audio)
s_conv_list.append(s)
n_half = int(audio.size(1)/2)
if k%2 == 0:
audio_0 = audio[:,:n_half,:]
audio_1 = audio[:,n_half:,:]
else:
audio_1 = audio[:,:n_half,:]
audio_0 = audio[:,n_half:,:]
output = self.nn[k]((audio_0, spect))
s = output[:, n_half:, :]
b = output[:, :n_half, :]
audio_1 = torch.exp(s)*audio_1 + b
s_list.append(s)
if k%2 == 0:
audio = torch.cat([audio[:,:n_half,:], audio_1],1)
else:
audio = torch.cat([audio_1, audio[:,n_half:,:]], 1)
output_audio.append(audio)
return torch.cat(output_audio,1), s_list, s_conv_list
"""
def infer(self, spect, sigma=1.0):
spect = self.upsample(spect)
# trim conv artifacts. maybe pad spec to kernel multiple
time_cutoff = self.upsample.kernel_size[0] - self.upsample.stride[0]
spect = spect[:, :, :-time_cutoff]
spect = spect.unfold(2, self.n_group, self.n_group).permute(0, 2, 1, 3)
spect = spect.contiguous().view(spect.size(0), spect.size(1), -1).permute(0, 2, 1)
if spect.type() == 'torch.cuda.HalfTensor':
audio = torch.cuda.HalfTensor(spect.size(0),
self.n_remaining_channels,
spect.size(2)).normal_()
else:
audio = torch.cuda.FloatTensor(spect.size(0),
self.n_remaining_channels,
spect.size(2)).normal_()
audio = torch.autograd.Variable(sigma*audio)
for k in reversed(range(self.n_flows)):
n_half = int(audio.size(1)/2)
if k%2 == 0:
audio_0 = audio[:,:n_half,:]
audio_1 = audio[:,n_half:,:]
else:
audio_1 = audio[:,:n_half,:]
audio_0 = audio[:,n_half:,:]
output = self.WN[k]((audio_0, spect))
s = output[:, n_half:, :]
b = output[:, :n_half, :]
audio_1 = (audio_1 - b)/torch.exp(s)
if k%2 == 0:
audio = torch.cat([audio[:,:n_half,:], audio_1],1)
else:
audio = torch.cat([audio_1, audio[:,n_half:,:]], 1)
audio = self.convinv[k](audio, reverse=True)
if k%4 == 0 and k > 0:
if spect.type() == 'torch.cuda.HalfTensor':
z = torch.cuda.HalfTensor(spect.size(0),
self.n_early_size,
spect.size(2)).normal_()
else:
z = torch.cuda.FloatTensor(spect.size(0),
self.n_early_size,
spect.size(2)).normal_()
audio = torch.cat((sigma*z, audio),1)
return audio.permute(0,2,1).contiguous().view(audio.size(0), -1).data
@staticmethod
def remove_weightnorm(model):
waveglow = model
for WN in waveglow.WN:
WN.start = torch.nn.utils.remove_weight_norm(WN.start)
WN.in_layers = remove(WN.in_layers)
WN.cond_layers = remove(WN.cond_layers)
WN.res_skip_layers = remove(WN.res_skip_layers)
return waveglow
|
import sys
sys.path.append('tacotron2')
import torch
from layers import STFT
class Denoiser(torch.nn.Module):
""" Removes model bias from audio produced with waveglow """
def __init__(self, waveglow, filter_length=1024, n_overlap=4,
win_length=1024, mode='zeros'):
super(Denoiser, self).__init__()
self.stft = STFT(filter_length=filter_length,
hop_length=int(filter_length/n_overlap),
win_length=win_length).cuda()
if mode == 'zeros':
mel_input = torch.zeros(
(1, 80, 88),
dtype=waveglow.upsample.weight.dtype,
device=waveglow.upsample.weight.device)
elif mode == 'normal':
mel_input = torch.randn(
(1, 80, 88),
dtype=waveglow.upsample.weight.dtype,
device=waveglow.upsample.weight.device)
else:
raise Exception("Mode {} if not supported".format(mode))
with torch.no_grad():
bias_audio = waveglow.infer(mel_input, sigma=0.0).float()
bias_spec, _ = self.stft.transform(bias_audio)
self.register_buffer('bias_spec', bias_spec[:, :, 0][:, :, None])
def forward(self, audio, strength=0.1):
audio_spec, audio_angles = self.stft.transform(audio.cuda().float())
audio_spec_denoised = audio_spec - self.bias_spec * strength
audio_spec_denoised = torch.clamp(audio_spec_denoised, 0.0)
audio_denoised = self.stft.inverse(audio_spec_denoised, audio_angles)
return audio_denoised
|
# *****************************************************************************
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the NVIDIA CORPORATION nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# *****************************************************************************
import os
import sys
import time
import subprocess
import argparse
import torch
import torch.distributed as dist
from torch.autograd import Variable
def reduce_tensor(tensor, num_gpus):
rt = tensor.clone()
dist.all_reduce(rt, op=dist.reduce_op.SUM)
rt /= num_gpus
return rt
def init_distributed(rank, num_gpus, group_name, dist_backend, dist_url):
assert torch.cuda.is_available(), "Distributed mode requires CUDA."
print("Initializing Distributed")
# Set cuda device so everything is done on the right GPU.
torch.cuda.set_device(rank % torch.cuda.device_count())
# Initialize distributed communication
dist.init_process_group(dist_backend, init_method=dist_url,
world_size=num_gpus, rank=rank,
group_name=group_name)
def _flatten_dense_tensors(tensors):
"""Flatten dense tensors into a contiguous 1D buffer. Assume tensors are of
same dense type.
Since inputs are dense, the resulting tensor will be a concatenated 1D
buffer. Element-wise operation on this buffer will be equivalent to
operating individually.
Arguments:
tensors (Iterable[Tensor]): dense tensors to flatten.
Returns:
A contiguous 1D buffer containing input tensors.
"""
if len(tensors) == 1:
return tensors[0].contiguous().view(-1)
flat = torch.cat([t.contiguous().view(-1) for t in tensors], dim=0)
return flat
def _unflatten_dense_tensors(flat, tensors):
"""View a flat buffer using the sizes of tensors. Assume that tensors are of
same dense type, and that flat is given by _flatten_dense_tensors.
Arguments:
flat (Tensor): flattened dense tensors to unflatten.
tensors (Iterable[Tensor]): dense tensors whose sizes will be used to
unflatten flat.
Returns:
Unflattened dense tensors with sizes same as tensors and values from
flat.
"""
outputs = []
offset = 0
for tensor in tensors:
numel = tensor.numel()
outputs.append(flat.narrow(0, offset, numel).view_as(tensor))
offset += numel
return tuple(outputs)
def apply_gradient_allreduce(module):
"""
Modifies existing model to do gradient allreduce, but doesn't change class
so you don't need "module"
"""
if not hasattr(dist, '_backend'):
module.warn_on_half = True
else:
module.warn_on_half = True if dist._backend == dist.dist_backend.GLOO else False
for p in module.state_dict().values():
if not torch.is_tensor(p):
continue
dist.broadcast(p, 0)
def allreduce_params():
if(module.needs_reduction):
module.needs_reduction = False
buckets = {}
for param in module.parameters():
if param.requires_grad and param.grad is not None:
tp = type(param.data)
if tp not in buckets:
buckets[tp] = []
buckets[tp].append(param)
if module.warn_on_half:
if torch.cuda.HalfTensor in buckets:
print("WARNING: gloo dist backend for half parameters may be extremely slow." +
" It is recommended to use the NCCL backend in this case. This currently requires" +
"PyTorch built from top of tree master.")
module.warn_on_half = False
for tp in buckets:
bucket = buckets[tp]
grads = [param.grad.data for param in bucket]
coalesced = _flatten_dense_tensors(grads)
dist.all_reduce(coalesced)
coalesced /= dist.get_world_size()
for buf, synced in zip(grads, _unflatten_dense_tensors(coalesced, grads)):
buf.copy_(synced)
for param in list(module.parameters()):
def allreduce_hook(*unused):
Variable._execution_engine.queue_callback(allreduce_params)
if param.requires_grad:
param.register_hook(allreduce_hook)
dir(param)
def set_needs_reduction(self, input, output):
self.needs_reduction = True
module.register_forward_hook(set_needs_reduction)
return module
def main(config, stdout_dir, args_str):
args_list = ['train.py']
args_list += args_str.split(' ') if len(args_str) > 0 else []
args_list.append('--config={}'.format(config))
num_gpus = torch.cuda.device_count()
args_list.append('--num_gpus={}'.format(num_gpus))
args_list.append("--group_name=group_{}".format(time.strftime("%Y_%m_%d-%H%M%S")))
if not os.path.isdir(stdout_dir):
os.makedirs(stdout_dir)
os.chmod(stdout_dir, 0o775)
workers = []
for i in range(num_gpus):
args_list[-2] = '--rank={}'.format(i)
stdout = None if i == 0 else open(
os.path.join(stdout_dir, "GPU_{}.log".format(i)), "w")
print(args_list)
p = subprocess.Popen([str(sys.executable)]+args_list, stdout=stdout)
workers.append(p)
for p in workers:
p.wait()
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('-c', '--config', type=str, required=True,
help='JSON file for configuration')
parser.add_argument('-s', '--stdout_dir', type=str, default=".",
help='directory to save stoud logs')
parser.add_argument(
'-a', '--args_str', type=str, default='',
help='double quoted string with space separated key value pairs')
args = parser.parse_args()
main(args.config, args.stdout_dir, args.args_str)
|
# *****************************************************************************
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the NVIDIA CORPORATION nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# *****************************************************************************
import argparse
import json
import os
import torch
#=====START: ADDED FOR DISTRIBUTED======
from distributed import init_distributed, apply_gradient_allreduce, reduce_tensor
from torch.utils.data.distributed import DistributedSampler
#=====END: ADDED FOR DISTRIBUTED======
from torch.utils.data import DataLoader
from glow import WaveGlow, WaveGlowLoss
from mel2samp import Mel2Samp
def load_checkpoint(checkpoint_path, model, optimizer):
assert os.path.isfile(checkpoint_path)
checkpoint_dict = torch.load(checkpoint_path, map_location='cpu')
iteration = checkpoint_dict['iteration']
optimizer.load_state_dict(checkpoint_dict['optimizer'])
model_for_loading = checkpoint_dict['model']
model.load_state_dict(model_for_loading.state_dict())
print("Loaded checkpoint '{}' (iteration {})" .format(
checkpoint_path, iteration))
return model, optimizer, iteration
def save_checkpoint(model, optimizer, learning_rate, iteration, filepath):
print("Saving model and optimizer state at iteration {} to {}".format(
iteration, filepath))
model_for_saving = WaveGlow(**waveglow_config).cuda()
model_for_saving.load_state_dict(model.state_dict())
torch.save({'model': model_for_saving,
'iteration': iteration,
'optimizer': optimizer.state_dict(),
'learning_rate': learning_rate}, filepath)
def train(num_gpus, rank, group_name, output_directory, epochs, learning_rate,
sigma, iters_per_checkpoint, batch_size, seed, fp16_run,
checkpoint_path, with_tensorboard):
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
#=====START: ADDED FOR DISTRIBUTED======
if num_gpus > 1:
init_distributed(rank, num_gpus, group_name, **dist_config)
#=====END: ADDED FOR DISTRIBUTED======
criterion = WaveGlowLoss(sigma)
model = WaveGlow(**waveglow_config).cuda()
#=====START: ADDED FOR DISTRIBUTED======
if num_gpus > 1:
model = apply_gradient_allreduce(model)
#=====END: ADDED FOR DISTRIBUTED======
optimizer = torch.optim.Adam(model.parameters(), lr=learning_rate)
if fp16_run:
from apex import amp
model, optimizer = amp.initialize(model, optimizer, opt_level='O1')
# Load checkpoint if one exists
iteration = 0
if checkpoint_path != "":
model, optimizer, iteration = load_checkpoint(checkpoint_path, model,
optimizer)
iteration += 1 # next iteration is iteration + 1
trainset = Mel2Samp(**data_config)
# =====START: ADDED FOR DISTRIBUTED======
train_sampler = DistributedSampler(trainset) if num_gpus > 1 else None
# =====END: ADDED FOR DISTRIBUTED======
train_loader = DataLoader(trainset, num_workers=1, shuffle=False,
sampler=train_sampler,
batch_size=batch_size,
pin_memory=False,
drop_last=True)
# Get shared output_directory ready
if rank == 0:
if not os.path.isdir(output_directory):
os.makedirs(output_directory)
os.chmod(output_directory, 0o775)
print("output directory", output_directory)
if with_tensorboard and rank == 0:
from tensorboardX import SummaryWriter
logger = SummaryWriter(os.path.join(output_directory, 'logs'))
model.train()
epoch_offset = max(0, int(iteration / len(train_loader)))
# ================ MAIN TRAINNIG LOOP! ===================
for epoch in range(epoch_offset, epochs):
print("Epoch: {}".format(epoch))
for i, batch in enumerate(train_loader):
model.zero_grad()
mel, audio = batch
mel = torch.autograd.Variable(mel.cuda())
audio = torch.autograd.Variable(audio.cuda())
outputs = model((mel, audio))
loss = criterion(outputs)
if num_gpus > 1:
reduced_loss = reduce_tensor(loss.data, num_gpus).item()
else:
reduced_loss = loss.item()
if fp16_run:
with amp.scale_loss(loss, optimizer) as scaled_loss:
scaled_loss.backward()
else:
loss.backward()
optimizer.step()
print("{}:\t{:.9f}".format(iteration, reduced_loss))
if with_tensorboard and rank == 0:
logger.add_scalar('training_loss', reduced_loss, i + len(train_loader) * epoch)
if (iteration % iters_per_checkpoint == 0):
if rank == 0:
checkpoint_path = "{}/waveglow_{}".format(
output_directory, iteration)
save_checkpoint(model, optimizer, learning_rate, iteration,
checkpoint_path)
iteration += 1
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument('-c', '--config', type=str,
help='JSON file for configuration')
parser.add_argument('-r', '--rank', type=int, default=0,
help='rank of process for distributed')
parser.add_argument('-g', '--group_name', type=str, default='',
help='name of group for distributed')
args = parser.parse_args()
# Parse configs. Globals nicer in this case
with open(args.config) as f:
data = f.read()
config = json.loads(data)
train_config = config["train_config"]
global data_config
data_config = config["data_config"]
global dist_config
dist_config = config["dist_config"]
global waveglow_config
waveglow_config = config["waveglow_config"]
num_gpus = torch.cuda.device_count()
if num_gpus > 1:
if args.group_name == '':
print("WARNING: Multiple GPUs detected but no distributed group set")
print("Only running 1 GPU. Use distributed.py for multiple GPUs")
num_gpus = 1
if num_gpus == 1 and args.rank != 0:
raise Exception("Doing single GPU training on rank > 0")
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
train(num_gpus, args.rank, args.group_name, **train_config)
|
# *****************************************************************************
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the NVIDIA CORPORATION nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# *****************************************************************************
import os
from scipy.io.wavfile import write
import torch
from mel2samp import files_to_list, MAX_WAV_VALUE
from denoiser import Denoiser
def main(mel_files, waveglow_path, sigma, output_dir, sampling_rate, is_fp16,
denoiser_strength):
mel_files = files_to_list(mel_files)
waveglow = torch.load(waveglow_path)['model']
waveglow = waveglow.remove_weightnorm(waveglow)
waveglow.cuda().eval()
if is_fp16:
from apex import amp
waveglow, _ = amp.initialize(waveglow, [], opt_level="O3")
if denoiser_strength > 0:
denoiser = Denoiser(waveglow).cuda()
for i, file_path in enumerate(mel_files):
file_name = os.path.splitext(os.path.basename(file_path))[0]
mel = torch.load(file_path)
mel = torch.autograd.Variable(mel.cuda())
mel = torch.unsqueeze(mel, 0)
mel = mel.half() if is_fp16 else mel
with torch.no_grad():
audio = waveglow.infer(mel, sigma=sigma)
if denoiser_strength > 0:
audio = denoiser(audio, denoiser_strength)
audio = audio * MAX_WAV_VALUE
audio = audio.squeeze()
audio = audio.cpu().numpy()
audio = audio.astype('int16')
audio_path = os.path.join(
output_dir, "{}_synthesis.wav".format(file_name))
write(audio_path, sampling_rate, audio)
print(audio_path)
if __name__ == "__main__":
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-f', "--filelist_path", required=True)
parser.add_argument('-w', '--waveglow_path',
help='Path to waveglow decoder checkpoint with model')
parser.add_argument('-o', "--output_dir", required=True)
parser.add_argument("-s", "--sigma", default=1.0, type=float)
parser.add_argument("--sampling_rate", default=22050, type=int)
parser.add_argument("--is_fp16", action="store_true")
parser.add_argument("-d", "--denoiser_strength", default=0.0, type=float,
help='Removes model bias. Start with 0.1 and adjust')
args = parser.parse_args()
main(args.filelist_path, args.waveglow_path, args.sigma, args.output_dir,
args.sampling_rate, args.is_fp16, args.denoiser_strength)
|
# *****************************************************************************
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the NVIDIA CORPORATION nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# *****************************************************************************\
import os
import random
import argparse
import json
import torch
import torch.utils.data
import sys
from scipy.io.wavfile import read
# We're using the audio processing from TacoTron2 to make sure it matches
sys.path.insert(0, 'tacotron2')
from tacotron2.layers import TacotronSTFT
MAX_WAV_VALUE = 32768.0
def files_to_list(filename):
"""
Takes a text file of filenames and makes a list of filenames
"""
with open(filename, encoding='utf-8') as f:
files = f.readlines()
files = [f.rstrip() for f in files]
return files
def load_wav_to_torch(full_path):
"""
Loads wavdata into torch array
"""
sampling_rate, data = read(full_path)
return torch.from_numpy(data).float(), sampling_rate
class Mel2Samp(torch.utils.data.Dataset):
"""
This is the main class that calculates the spectrogram and returns the
spectrogram, audio pair.
"""
def __init__(self, training_files, segment_length, filter_length,
hop_length, win_length, sampling_rate, mel_fmin, mel_fmax):
self.audio_files = files_to_list(training_files)
random.seed(1234)
random.shuffle(self.audio_files)
self.stft = TacotronSTFT(filter_length=filter_length,
hop_length=hop_length,
win_length=win_length,
sampling_rate=sampling_rate,
mel_fmin=mel_fmin, mel_fmax=mel_fmax)
self.segment_length = segment_length
self.sampling_rate = sampling_rate
def get_mel(self, audio):
audio_norm = audio / MAX_WAV_VALUE
audio_norm = audio_norm.unsqueeze(0)
audio_norm = torch.autograd.Variable(audio_norm, requires_grad=False)
melspec = self.stft.mel_spectrogram(audio_norm)
melspec = torch.squeeze(melspec, 0)
return melspec
def __getitem__(self, index):
# Read audio
filename = self.audio_files[index]
audio, sampling_rate = load_wav_to_torch(filename)
if sampling_rate != self.sampling_rate:
raise ValueError("{} SR doesn't match target {} SR".format(
sampling_rate, self.sampling_rate))
# Take segment
if audio.size(0) >= self.segment_length:
max_audio_start = audio.size(0) - self.segment_length
audio_start = random.randint(0, max_audio_start)
audio = audio[audio_start:audio_start+self.segment_length]
else:
audio = torch.nn.functional.pad(audio, (0, self.segment_length - audio.size(0)), 'constant').data
mel = self.get_mel(audio)
audio = audio / MAX_WAV_VALUE
return (mel, audio)
def __len__(self):
return len(self.audio_files)
# ===================================================================
# Takes directory of clean audio and makes directory of spectrograms
# Useful for making test sets
# ===================================================================
if __name__ == "__main__":
# Get defaults so it can work with no Sacred
parser = argparse.ArgumentParser()
parser.add_argument('-f', "--filelist_path", required=True)
parser.add_argument('-c', '--config', type=str,
help='JSON file for configuration')
parser.add_argument('-o', '--output_dir', type=str,
help='Output directory')
args = parser.parse_args()
with open(args.config) as f:
data = f.read()
data_config = json.loads(data)["data_config"]
mel2samp = Mel2Samp(**data_config)
filepaths = files_to_list(args.filelist_path)
# Make directory if it doesn't exist
if not os.path.isdir(args.output_dir):
os.makedirs(args.output_dir)
os.chmod(args.output_dir, 0o775)
for filepath in filepaths:
audio, sr = load_wav_to_torch(filepath)
melspectrogram = mel2samp.get_mel(audio)
filename = os.path.basename(filepath)
new_filepath = args.output_dir + '/' + filename + '.pt'
print(new_filepath)
torch.save(melspectrogram, new_filepath)
|
import sys
import copy
import torch
def _check_model_old_version(model):
if hasattr(model.WN[0], 'res_layers') or hasattr(model.WN[0], 'cond_layers'):
return True
else:
return False
def _update_model_res_skip(old_model, new_model):
for idx in range(0, len(new_model.WN)):
wavenet = new_model.WN[idx]
n_channels = wavenet.n_channels
n_layers = wavenet.n_layers
wavenet.res_skip_layers = torch.nn.ModuleList()
for i in range(0, n_layers):
if i < n_layers - 1:
res_skip_channels = 2*n_channels
else:
res_skip_channels = n_channels
res_skip_layer = torch.nn.Conv1d(n_channels, res_skip_channels, 1)
skip_layer = torch.nn.utils.remove_weight_norm(wavenet.skip_layers[i])
if i < n_layers - 1:
res_layer = torch.nn.utils.remove_weight_norm(wavenet.res_layers[i])
res_skip_layer.weight = torch.nn.Parameter(torch.cat([res_layer.weight, skip_layer.weight]))
res_skip_layer.bias = torch.nn.Parameter(torch.cat([res_layer.bias, skip_layer.bias]))
else:
res_skip_layer.weight = torch.nn.Parameter(skip_layer.weight)
res_skip_layer.bias = torch.nn.Parameter(skip_layer.bias)
res_skip_layer = torch.nn.utils.weight_norm(res_skip_layer, name='weight')
wavenet.res_skip_layers.append(res_skip_layer)
del wavenet.res_layers
del wavenet.skip_layers
def _update_model_cond(old_model, new_model):
for idx in range(0, len(new_model.WN)):
wavenet = new_model.WN[idx]
n_channels = wavenet.n_channels
n_layers = wavenet.n_layers
n_mel_channels = wavenet.cond_layers[0].weight.shape[1]
cond_layer = torch.nn.Conv1d(n_mel_channels, 2*n_channels*n_layers, 1)
cond_layer_weight = []
cond_layer_bias = []
for i in range(0, n_layers):
_cond_layer = torch.nn.utils.remove_weight_norm(wavenet.cond_layers[i])
cond_layer_weight.append(_cond_layer.weight)
cond_layer_bias.append(_cond_layer.bias)
cond_layer.weight = torch.nn.Parameter(torch.cat(cond_layer_weight))
cond_layer.bias = torch.nn.Parameter(torch.cat(cond_layer_bias))
cond_layer = torch.nn.utils.weight_norm(cond_layer, name='weight')
wavenet.cond_layer = cond_layer
del wavenet.cond_layers
def update_model(old_model):
if not _check_model_old_version(old_model):
return old_model
new_model = copy.deepcopy(old_model)
if hasattr(old_model.WN[0], 'res_layers'):
_update_model_res_skip(old_model, new_model)
if hasattr(old_model.WN[0], 'cond_layers'):
_update_model_cond(old_model, new_model)
return new_model
if __name__ == '__main__':
old_model_path = sys.argv[1]
new_model_path = sys.argv[2]
model = torch.load(old_model_path, map_location='cpu')
model['model'] = update_model(model['model'])
torch.save(model, new_model_path)
|
import matplotlib
matplotlib.use("Agg")
import matplotlib.pylab as plt
import numpy as np
def save_figure_to_numpy(fig):
# save it to a numpy array.
data = np.fromstring(fig.canvas.tostring_rgb(), dtype=np.uint8, sep='')
data = data.reshape(fig.canvas.get_width_height()[::-1] + (3,))
return data
def plot_alignment_to_numpy(alignment, info=None):
fig, ax = plt.subplots(figsize=(6, 4))
im = ax.imshow(alignment, aspect='auto', origin='lower',
interpolation='none')
fig.colorbar(im, ax=ax)
xlabel = 'Decoder timestep'
if info is not None:
xlabel += '\n\n' + info
plt.xlabel(xlabel)
plt.ylabel('Encoder timestep')
plt.tight_layout()
fig.canvas.draw()
data = save_figure_to_numpy(fig)
plt.close()
return data
def plot_spectrogram_to_numpy(spectrogram):
fig, ax = plt.subplots(figsize=(12, 3))
im = ax.imshow(spectrogram, aspect="auto", origin="lower",
interpolation='none')
plt.colorbar(im, ax=ax)
plt.xlabel("Frames")
plt.ylabel("Channels")
plt.tight_layout()
fig.canvas.draw()
data = save_figure_to_numpy(fig)
plt.close()
return data
def plot_gate_outputs_to_numpy(gate_targets, gate_outputs):
fig, ax = plt.subplots(figsize=(12, 3))
ax.scatter(range(len(gate_targets)), gate_targets, alpha=0.5,
color='green', marker='+', s=1, label='target')
ax.scatter(range(len(gate_outputs)), gate_outputs, alpha=0.5,
color='red', marker='.', s=1, label='predicted')
plt.xlabel("Frames (Green target, Red predicted)")
plt.ylabel("Gate State")
plt.tight_layout()
fig.canvas.draw()
data = save_figure_to_numpy(fig)
plt.close()
return data
|
import tensorflow as tf
from text import symbols
def create_hparams(hparams_string=None, verbose=False):
"""Create model hyperparameters. Parse nondefault from given string."""
hparams = tf.contrib.training.HParams(
################################
# Experiment Parameters #
################################
epochs=500,
iters_per_checkpoint=500,
seed=1234,
dynamic_loss_scaling=True,
fp16_run=False,
distributed_run=False,
dist_backend="nccl",
dist_url="file://distributed.dpt",
cudnn_enabled=True,
cudnn_benchmark=False,
################################
# Data Parameters #
################################
load_mel_from_disk=False,
training_files='filelists/ljs_audio_text_train_filelist.txt',
validation_files='filelists/ljs_audio_text_val_filelist.txt',
text_cleaners=['english_cleaners'],
sort_by_length=False,
################################
# Audio Parameters #
################################
max_wav_value=32768.0,
sampling_rate=22050,
filter_length=1024,
hop_length=256,
win_length=1024,
n_mel_channels=80,
mel_fmin=0.0,
mel_fmax=None, # if None, half the sampling rate
################################
# Model Parameters #
################################
n_symbols=len(symbols),
symbols_embedding_dim=512,
# Encoder parameters
encoder_kernel_size=5,
encoder_n_convolutions=3,
encoder_embedding_dim=512,
# Decoder parameters
n_frames_per_step=1, # currently only 1 is supported
decoder_rnn_dim=1024,
prenet_dim=256,
max_decoder_steps=1000,
gate_threshold=0.6,
# Attention parameters
attention_rnn_dim=1024,
attention_dim=128,
# Location Layer parameters
attention_location_n_filters=32,
attention_location_kernel_size=31,
# Mel-post processing network parameters
postnet_embedding_dim=512,
postnet_kernel_size=5,
postnet_n_convolutions=5,
################################
# Optimization Hyperparameters #
################################
use_saved_learning_rate=False,
learning_rate=1e-3,
weight_decay=1e-6,
grad_clip_thresh=1,
batch_size=48,
mask_padding=False # set model's padded outputs to padded values
)
if hparams_string:
tf.logging.info('Parsing command line hparams: %s', hparams_string)
hparams.parse(hparams_string)
if verbose:
tf.logging.info('Final parsed hparams: %s', hparams.values())
return hparams
|
import torch
import numpy as np
from scipy.signal import get_window
import librosa.util as librosa_util
def window_sumsquare(window, n_frames, hop_length=200, win_length=800,
n_fft=800, dtype=np.float32, norm=None):
"""
# from librosa 0.6
Compute the sum-square envelope of a window function at a given hop length.
This is used to estimate modulation effects induced by windowing
observations in short-time fourier transforms.
Parameters
----------
window : string, tuple, number, callable, or list-like
Window specification, as in `get_window`
n_frames : int > 0
The number of analysis frames
hop_length : int > 0
The number of samples to advance between frames
win_length : [optional]
The length of the window function. By default, this matches `n_fft`.
n_fft : int > 0
The length of each analysis frame.
dtype : np.dtype
The data type of the output
Returns
-------
wss : np.ndarray, shape=`(n_fft + hop_length * (n_frames - 1))`
The sum-squared envelope of the window function
"""
if win_length is None:
win_length = n_fft
n = n_fft + hop_length * (n_frames - 1)
x = np.zeros(n, dtype=dtype)
# Compute the squared window at the desired length
win_sq = get_window(window, win_length, fftbins=True)
win_sq = librosa_util.normalize(win_sq, norm=norm)**2
win_sq = librosa_util.pad_center(win_sq, n_fft)
# Fill the envelope
for i in range(n_frames):
sample = i * hop_length
x[sample:min(n, sample + n_fft)] += win_sq[:max(0, min(n_fft, n - sample))]
return x
def griffin_lim(magnitudes, stft_fn, n_iters=30):
"""
PARAMS
------
magnitudes: spectrogram magnitudes
stft_fn: STFT class with transform (STFT) and inverse (ISTFT) methods
"""
angles = np.angle(np.exp(2j * np.pi * np.random.rand(*magnitudes.size())))
angles = angles.astype(np.float32)
angles = torch.autograd.Variable(torch.from_numpy(angles))
signal = stft_fn.inverse(magnitudes, angles).squeeze(1)
for i in range(n_iters):
_, angles = stft_fn.transform(signal)
signal = stft_fn.inverse(magnitudes, angles).squeeze(1)
return signal
def dynamic_range_compression(x, C=1, clip_val=1e-5):
"""
PARAMS
------
C: compression factor
"""
return torch.log(torch.clamp(x, min=clip_val) * C)
def dynamic_range_decompression(x, C=1):
"""
PARAMS
------
C: compression factor used to compress
"""
return torch.exp(x) / C
|
import random
import torch.nn.functional as F
from tensorboardX import SummaryWriter
from plotting_utils import plot_alignment_to_numpy, plot_spectrogram_to_numpy
from plotting_utils import plot_gate_outputs_to_numpy
class Tacotron2Logger(SummaryWriter):
def __init__(self, logdir):
super(Tacotron2Logger, self).__init__(logdir)
def log_training(self, reduced_loss, grad_norm, learning_rate, duration,
iteration):
self.add_scalar("training.loss", reduced_loss, iteration)
self.add_scalar("grad.norm", grad_norm, iteration)
self.add_scalar("learning.rate", learning_rate, iteration)
self.add_scalar("duration", duration, iteration)
def log_validation(self, reduced_loss, model, y, y_pred, iteration):
self.add_scalar("validation.loss", reduced_loss, iteration)
_, mel_outputs, gate_outputs, alignments = y_pred
mel_targets, gate_targets = y
# plot distribution of parameters
for tag, value in model.named_parameters():
tag = tag.replace('.', '/')
self.add_histogram(tag, value.data.cpu().numpy(), iteration)
# plot alignment, mel target and predicted, gate target and predicted
idx = random.randint(0, alignments.size(0) - 1)
self.add_image(
"alignment",
plot_alignment_to_numpy(alignments[idx].data.cpu().numpy().T),
iteration)
self.add_image(
"mel_target",
plot_spectrogram_to_numpy(mel_targets[idx].data.cpu().numpy()),
iteration)
self.add_image(
"mel_predicted",
plot_spectrogram_to_numpy(mel_outputs[idx].data.cpu().numpy()),
iteration)
self.add_image(
"gate",
plot_gate_outputs_to_numpy(
gate_targets[idx].data.cpu().numpy(),
F.sigmoid(gate_outputs[idx]).data.cpu().numpy()),
iteration)
|
import torch
from torch import nn
from torch.autograd import Variable
from torch.nn.parameter import Parameter
from torch._utils import _flatten_dense_tensors, _unflatten_dense_tensors
from loss_scaler import DynamicLossScaler, LossScaler
FLOAT_TYPES = (torch.FloatTensor, torch.cuda.FloatTensor)
HALF_TYPES = (torch.HalfTensor, torch.cuda.HalfTensor)
def conversion_helper(val, conversion):
"""Apply conversion to val. Recursively apply conversion if `val` is a nested tuple/list structure."""
if not isinstance(val, (tuple, list)):
return conversion(val)
rtn = [conversion_helper(v, conversion) for v in val]
if isinstance(val, tuple):
rtn = tuple(rtn)
return rtn
def fp32_to_fp16(val):
"""Convert fp32 `val` to fp16"""
def half_conversion(val):
val_typecheck = val
if isinstance(val_typecheck, (Parameter, Variable)):
val_typecheck = val.data
if isinstance(val_typecheck, FLOAT_TYPES):
val = val.half()
return val
return conversion_helper(val, half_conversion)
def fp16_to_fp32(val):
"""Convert fp16 `val` to fp32"""
def float_conversion(val):
val_typecheck = val
if isinstance(val_typecheck, (Parameter, Variable)):
val_typecheck = val.data
if isinstance(val_typecheck, HALF_TYPES):
val = val.float()
return val
return conversion_helper(val, float_conversion)
class FP16_Module(nn.Module):
def __init__(self, module):
super(FP16_Module, self).__init__()
self.add_module('module', module.half())
def forward(self, *inputs, **kwargs):
return fp16_to_fp32(self.module(*(fp32_to_fp16(inputs)), **kwargs))
class FP16_Optimizer:
"""
FP16_Optimizer is designed to wrap an existing PyTorch optimizer,
and enable an fp16 model to be trained using a master copy of fp32 weights.
Args:
optimizer (torch.optim.optimizer): Existing optimizer containing initialized fp16 parameters. Internally, FP16_Optimizer replaces the passed optimizer's fp16 parameters with new fp32 parameters copied from the original ones. FP16_Optimizer also stores references to the original fp16 parameters, and updates these fp16 parameters from the master fp32 copy after each step.
static_loss_scale (float, optional, default=1.0): Loss scale used internally to scale fp16 gradients computed by the model. Scaled gradients will be copied to fp32, then downscaled before being applied to the fp32 master params, so static_loss_scale should not affect learning rate.
dynamic_loss_scale (bool, optional, default=False): Use dynamic loss scaling. If True, this will override any static_loss_scale option.
"""
def __init__(self, optimizer, static_loss_scale=1.0, dynamic_loss_scale=False):
if not torch.cuda.is_available:
raise SystemError('Cannot use fp16 without CUDA')
self.fp16_param_groups = []
self.fp32_param_groups = []
self.fp32_flattened_groups = []
for i, param_group in enumerate(optimizer.param_groups):
print("FP16_Optimizer processing param group {}:".format(i))
fp16_params_this_group = []
fp32_params_this_group = []
for param in param_group['params']:
if param.requires_grad:
if param.type() == 'torch.cuda.HalfTensor':
print("FP16_Optimizer received torch.cuda.HalfTensor with {}"
.format(param.size()))
fp16_params_this_group.append(param)
elif param.type() == 'torch.cuda.FloatTensor':
print("FP16_Optimizer received torch.cuda.FloatTensor with {}"
.format(param.size()))
fp32_params_this_group.append(param)
else:
raise TypeError("Wrapped parameters must be either "
"torch.cuda.FloatTensor or torch.cuda.HalfTensor. "
"Received {}".format(param.type()))
fp32_flattened_this_group = None
if len(fp16_params_this_group) > 0:
fp32_flattened_this_group = _flatten_dense_tensors(
[param.detach().data.clone().float() for param in fp16_params_this_group])
fp32_flattened_this_group = Variable(fp32_flattened_this_group, requires_grad = True)
fp32_flattened_this_group.grad = fp32_flattened_this_group.new(
*fp32_flattened_this_group.size())
# python's lovely list concatenation via +
if fp32_flattened_this_group is not None:
param_group['params'] = [fp32_flattened_this_group] + fp32_params_this_group
else:
param_group['params'] = fp32_params_this_group
self.fp16_param_groups.append(fp16_params_this_group)
self.fp32_param_groups.append(fp32_params_this_group)
self.fp32_flattened_groups.append(fp32_flattened_this_group)
# print("self.fp32_flattened_groups = ", self.fp32_flattened_groups)
# print("self.fp16_param_groups = ", self.fp16_param_groups)
self.optimizer = optimizer.__class__(optimizer.param_groups)
# self.optimizer.load_state_dict(optimizer.state_dict())
self.param_groups = self.optimizer.param_groups
if dynamic_loss_scale:
self.dynamic_loss_scale = True
self.loss_scaler = DynamicLossScaler()
else:
self.dynamic_loss_scale = False
self.loss_scaler = LossScaler(static_loss_scale)
self.overflow = False
self.first_closure_call_this_step = True
def zero_grad(self):
"""
Zero fp32 and fp16 parameter grads.
"""
self.optimizer.zero_grad()
for fp16_group in self.fp16_param_groups:
for param in fp16_group:
if param.grad is not None:
param.grad.detach_() # This does appear in torch.optim.optimizer.zero_grad(),
# but I'm not sure why it's needed.
param.grad.zero_()
def _check_overflow(self):
params = []
for group in self.fp16_param_groups:
for param in group:
params.append(param)
for group in self.fp32_param_groups:
for param in group:
params.append(param)
self.overflow = self.loss_scaler.has_overflow(params)
def _update_scale(self, has_overflow=False):
self.loss_scaler.update_scale(has_overflow)
def _copy_grads_fp16_to_fp32(self):
for fp32_group, fp16_group in zip(self.fp32_flattened_groups, self.fp16_param_groups):
if len(fp16_group) > 0:
# This might incur one more deep copy than is necessary.
fp32_group.grad.data.copy_(
_flatten_dense_tensors([fp16_param.grad.data for fp16_param in fp16_group]))
def _downscale_fp32(self):
if self.loss_scale != 1.0:
for param_group in self.optimizer.param_groups:
for param in param_group['params']:
param.grad.data.mul_(1./self.loss_scale)
def clip_fp32_grads(self, clip=-1):
if not self.overflow:
fp32_params = []
for param_group in self.optimizer.param_groups:
for param in param_group['params']:
fp32_params.append(param)
if clip > 0:
return torch.nn.utils.clip_grad_norm(fp32_params, clip)
def _copy_params_fp32_to_fp16(self):
for fp16_group, fp32_group in zip(self.fp16_param_groups, self.fp32_flattened_groups):
if len(fp16_group) > 0:
for fp16_param, fp32_data in zip(fp16_group,
_unflatten_dense_tensors(fp32_group.data, fp16_group)):
fp16_param.data.copy_(fp32_data)
def state_dict(self):
"""
Returns a dict containing the current state of this FP16_Optimizer instance.
This dict contains attributes of FP16_Optimizer, as well as the state_dict
of the contained Pytorch optimizer.
Untested.
"""
state_dict = {}
state_dict['loss_scaler'] = self.loss_scaler
state_dict['dynamic_loss_scale'] = self.dynamic_loss_scale
state_dict['overflow'] = self.overflow
state_dict['first_closure_call_this_step'] = self.first_closure_call_this_step
state_dict['optimizer_state_dict'] = self.optimizer.state_dict()
return state_dict
def load_state_dict(self, state_dict):
"""
Loads a state_dict created by an earlier call to state_dict.
Untested.
"""
self.loss_scaler = state_dict['loss_scaler']
self.dynamic_loss_scale = state_dict['dynamic_loss_scale']
self.overflow = state_dict['overflow']
self.first_closure_call_this_step = state_dict['first_closure_call_this_step']
self.optimizer.load_state_dict(state_dict['optimizer_state_dict'])
def step(self, closure=None): # could add clip option.
"""
If no closure is supplied, step should be called after fp16_optimizer_obj.backward(loss).
step updates the fp32 master copy of parameters using the optimizer supplied to
FP16_Optimizer's constructor, then copies the updated fp32 params into the fp16 params
originally referenced by Fp16_Optimizer's constructor, so the user may immediately run
another forward pass using their model.
If a closure is supplied, step may be called without a prior call to self.backward(loss).
However, the user should take care that any loss.backward() call within the closure
has been replaced by fp16_optimizer_obj.backward(loss).
Args:
closure (optional): Closure that will be supplied to the underlying optimizer originally passed to FP16_Optimizer's constructor. closure should call zero_grad on the FP16_Optimizer object, compute the loss, call .backward(loss), and return the loss.
Closure example::
# optimizer is assumed to be an FP16_Optimizer object, previously constructed from an
# existing pytorch optimizer.
for input, target in dataset:
def closure():
optimizer.zero_grad()
output = model(input)
loss = loss_fn(output, target)
optimizer.backward(loss)
return loss
optimizer.step(closure)
.. note::
The only changes that need to be made compared to
`ordinary optimizer closures`_ are that "optimizer" itself should be an instance of
FP16_Optimizer, and that the call to loss.backward should be replaced by
optimizer.backward(loss).
.. warning::
Currently, calling step with a closure is not compatible with dynamic loss scaling.
.. _`ordinary optimizer closures`:
http://pytorch.org/docs/master/optim.html#optimizer-step-closure
"""
if closure is not None and isinstance(self.loss_scaler, DynamicLossScaler):
raise TypeError("Using step with a closure is currently not "
"compatible with dynamic loss scaling.")
scale = self.loss_scaler.loss_scale
self._update_scale(self.overflow)
if self.overflow:
print("OVERFLOW! Skipping step. Attempted loss scale: {}".format(scale))
return
if closure is not None:
self._step_with_closure(closure)
else:
self.optimizer.step()
self._copy_params_fp32_to_fp16()
return
def _step_with_closure(self, closure):
def wrapped_closure():
if self.first_closure_call_this_step:
"""
We expect that the fp16 params are initially fresh on entering self.step(),
so _copy_params_fp32_to_fp16() is unnecessary the first time wrapped_closure()
is called within self.optimizer.step().
"""
self.first_closure_call_this_step = False
else:
"""
If self.optimizer.step() internally calls wrapped_closure more than once,
it may update the fp32 params after each call. However, self.optimizer
doesn't know about the fp16 params at all. If the fp32 params get updated,
we can't rely on self.optimizer to refresh the fp16 params. We need
to handle that manually:
"""
self._copy_params_fp32_to_fp16()
"""
Our API expects the user to give us ownership of the backward() call by
replacing all calls to loss.backward() with optimizer.backward(loss).
This requirement holds whether or not the call to backward() is made within
a closure.
If the user is properly calling optimizer.backward(loss) within "closure,"
calling closure() here will give the fp32 master params fresh gradients
for the optimizer to play with,
so all wrapped_closure needs to do is call closure() and return the loss.
"""
temp_loss = closure()
return temp_loss
self.optimizer.step(wrapped_closure)
self.first_closure_call_this_step = True
def backward(self, loss, update_fp32_grads=True):
"""
fp16_optimizer_obj.backward performs the following conceptual operations:
fp32_loss = loss.float() (see first Note below)
scaled_loss = fp32_loss*loss_scale
scaled_loss.backward(), which accumulates scaled gradients into the .grad attributes of the
fp16 model's leaves.
fp16 grads are then copied to the stored fp32 params' .grad attributes (see second Note).
Finally, fp32 grads are divided by loss_scale.
In this way, after fp16_optimizer_obj.backward, the fp32 parameters have fresh gradients,
and fp16_optimizer_obj.step may be called.
.. note::
Converting the loss to fp32 before applying the loss scale provides some
additional safety against overflow if the user has supplied an fp16 value.
However, for maximum overflow safety, the user should
compute the loss criterion (MSE, cross entropy, etc) in fp32 before supplying it to
fp16_optimizer_obj.backward.
.. note::
The gradients found in an fp16 model's leaves after a call to
fp16_optimizer_obj.backward should not be regarded as valid in general,
because it's possible
they have been scaled (and in the case of dynamic loss scaling,
the scale factor may silently change over time).
If the user wants to inspect gradients after a call to fp16_optimizer_obj.backward,
he/she should query the .grad attribute of FP16_Optimizer's stored fp32 parameters.
Args:
loss: The loss output by the user's model. loss may be either float or half (but see first Note above).
update_fp32_grads (bool, optional, default=True): Option to copy fp16 grads to fp32 grads on this call. By setting this to False, the user can delay this copy, which is useful to eliminate redundant fp16->fp32 grad copies if fp16_optimizer_obj.backward is being called on multiple losses in one iteration. If set to False, the user becomes responsible for calling fp16_optimizer_obj.update_fp32_grads before calling fp16_optimizer_obj.step.
Example::
# Ordinary operation:
optimizer.backward(loss)
# Naive operation with multiple losses (technically valid, but less efficient):
# fp32 grads will be correct after the second call, but
# the first call incurs an unnecessary fp16->fp32 grad copy.
optimizer.backward(loss1)
optimizer.backward(loss2)
# More efficient way to handle multiple losses:
# The fp16->fp32 grad copy is delayed until fp16 grads from all
# losses have been accumulated.
optimizer.backward(loss1, update_fp32_grads=False)
optimizer.backward(loss2, update_fp32_grads=False)
optimizer.update_fp32_grads()
"""
self.loss_scaler.backward(loss.float())
if update_fp32_grads:
self.update_fp32_grads()
def update_fp32_grads(self):
"""
Copy the .grad attribute from stored references to fp16 parameters to
the .grad attribute of the master fp32 parameters that are directly
updated by the optimizer. :attr:`update_fp32_grads` only needs to be called if
fp16_optimizer_obj.backward was called with update_fp32_grads=False.
"""
if self.dynamic_loss_scale:
self._check_overflow()
if self.overflow: return
self._copy_grads_fp16_to_fp32()
self._downscale_fp32()
@property
def loss_scale(self):
return self.loss_scaler.loss_scale
|
import torch
from torch.autograd import Variable
from torch import nn
from torch.nn import functional as F
from layers import ConvNorm, LinearNorm
from utils import to_gpu, get_mask_from_lengths
from fp16_optimizer import fp32_to_fp16, fp16_to_fp32
class LocationLayer(nn.Module):
def __init__(self, attention_n_filters, attention_kernel_size,
attention_dim):
super(LocationLayer, self).__init__()
padding = int((attention_kernel_size - 1) / 2)
self.location_conv = ConvNorm(2, attention_n_filters,
kernel_size=attention_kernel_size,
padding=padding, bias=False, stride=1,
dilation=1)
self.location_dense = LinearNorm(attention_n_filters, attention_dim,
bias=False, w_init_gain='tanh')
def forward(self, attention_weights_cat):
processed_attention = self.location_conv(attention_weights_cat)
processed_attention = processed_attention.transpose(1, 2)
processed_attention = self.location_dense(processed_attention)
return processed_attention
class Attention(nn.Module):
def __init__(self, attention_rnn_dim, embedding_dim, attention_dim,
attention_location_n_filters, attention_location_kernel_size):
super(Attention, self).__init__()
self.query_layer = LinearNorm(attention_rnn_dim, attention_dim,
bias=False, w_init_gain='tanh')
self.memory_layer = LinearNorm(embedding_dim, attention_dim, bias=False,
w_init_gain='tanh')
self.v = LinearNorm(attention_dim, 1, bias=False)
self.location_layer = LocationLayer(attention_location_n_filters,
attention_location_kernel_size,
attention_dim)
self.score_mask_value = -float("inf")
def get_alignment_energies(self, query, processed_memory,
attention_weights_cat):
"""
PARAMS
------
query: decoder output (batch, n_mel_channels * n_frames_per_step)
processed_memory: processed encoder outputs (B, T_in, attention_dim)
attention_weights_cat: cumulative and prev. att weights (B, 2, max_time)
RETURNS
-------
alignment (batch, max_time)
"""
processed_query = self.query_layer(query.unsqueeze(1))
processed_attention_weights = self.location_layer(attention_weights_cat)
energies = self.v(F.tanh(
processed_query + processed_attention_weights + processed_memory))
energies = energies.squeeze(-1)
return energies
def forward(self, attention_hidden_state, memory, processed_memory,
attention_weights_cat, mask):
"""
PARAMS
------
attention_hidden_state: attention rnn last output
memory: encoder outputs
processed_memory: processed encoder outputs
attention_weights_cat: previous and cummulative attention weights
mask: binary mask for padded data
"""
alignment = self.get_alignment_energies(
attention_hidden_state, processed_memory, attention_weights_cat)
if mask is not None:
alignment.data.masked_fill_(mask, self.score_mask_value)
attention_weights = F.softmax(alignment, dim=1)
attention_context = torch.bmm(attention_weights.unsqueeze(1), memory)
attention_context = attention_context.squeeze(1)
return attention_context, attention_weights
class Prenet(nn.Module):
def __init__(self, in_dim, sizes):
super(Prenet, self).__init__()
in_sizes = [in_dim] + sizes[:-1]
self.layers = nn.ModuleList(
[LinearNorm(in_size, out_size, bias=False)
for (in_size, out_size) in zip(in_sizes, sizes)])
def forward(self, x):
for linear in self.layers:
x = F.dropout(F.relu(linear(x)), p=0.5, training=True)
return x
class Postnet(nn.Module):
"""Postnet
- Five 1-d convolution with 512 channels and kernel size 5
"""
def __init__(self, hparams):
super(Postnet, self).__init__()
self.dropout = nn.Dropout(0.5)
self.convolutions = nn.ModuleList()
self.convolutions.append(
nn.Sequential(
ConvNorm(hparams.n_mel_channels, hparams.postnet_embedding_dim,
kernel_size=hparams.postnet_kernel_size, stride=1,
padding=int((hparams.postnet_kernel_size - 1) / 2),
dilation=1, w_init_gain='tanh'),
nn.BatchNorm1d(hparams.postnet_embedding_dim))
)
for i in range(1, hparams.postnet_n_convolutions - 1):
self.convolutions.append(
nn.Sequential(
ConvNorm(hparams.postnet_embedding_dim,
hparams.postnet_embedding_dim,
kernel_size=hparams.postnet_kernel_size, stride=1,
padding=int((hparams.postnet_kernel_size - 1) / 2),
dilation=1, w_init_gain='tanh'),
nn.BatchNorm1d(hparams.postnet_embedding_dim))
)
self.convolutions.append(
nn.Sequential(
ConvNorm(hparams.postnet_embedding_dim, hparams.n_mel_channels,
kernel_size=hparams.postnet_kernel_size, stride=1,
padding=int((hparams.postnet_kernel_size - 1) / 2),
dilation=1, w_init_gain='linear'),
nn.BatchNorm1d(hparams.n_mel_channels))
)
def forward(self, x):
for i in range(len(self.convolutions) - 1):
x = self.dropout(F.tanh(self.convolutions[i](x)))
x = self.dropout(self.convolutions[-1](x))
return x
class Encoder(nn.Module):
"""Encoder module:
- Three 1-d convolution banks
- Bidirectional LSTM
"""
def __init__(self, hparams):
super(Encoder, self).__init__()
self.dropout = nn.Dropout(0.5)
convolutions = []
for _ in range(hparams.encoder_n_convolutions):
conv_layer = nn.Sequential(
ConvNorm(hparams.encoder_embedding_dim,
hparams.encoder_embedding_dim,
kernel_size=hparams.encoder_kernel_size, stride=1,
padding=int((hparams.encoder_kernel_size - 1) / 2),
dilation=1, w_init_gain='relu'),
nn.BatchNorm1d(hparams.encoder_embedding_dim))
convolutions.append(conv_layer)
self.convolutions = nn.ModuleList(convolutions)
self.lstm = nn.LSTM(hparams.encoder_embedding_dim,
int(hparams.encoder_embedding_dim / 2), 1,
batch_first=True, bidirectional=True)
def forward(self, x, input_lengths):
for conv in self.convolutions:
x = self.dropout(F.relu(conv(x)))
x = x.transpose(1, 2)
# pytorch tensor are not reversible, hence the conversion
input_lengths = input_lengths.cpu().numpy()
x = nn.utils.rnn.pack_padded_sequence(
x, input_lengths, batch_first=True)
self.lstm.flatten_parameters()
outputs, _ = self.lstm(x)
outputs, _ = nn.utils.rnn.pad_packed_sequence(
outputs, batch_first=True)
return outputs
def inference(self, x):
for conv in self.convolutions:
x = self.dropout(F.relu(conv(x)))
x = x.transpose(1, 2)
self.lstm.flatten_parameters()
outputs, _ = self.lstm(x)
return outputs
class Decoder(nn.Module):
def __init__(self, hparams):
super(Decoder, self).__init__()
self.n_mel_channels = hparams.n_mel_channels
self.n_frames_per_step = hparams.n_frames_per_step
self.encoder_embedding_dim = hparams.encoder_embedding_dim
self.attention_rnn_dim = hparams.attention_rnn_dim
self.decoder_rnn_dim = hparams.decoder_rnn_dim
self.prenet_dim = hparams.prenet_dim
self.max_decoder_steps = hparams.max_decoder_steps
self.gate_threshold = hparams.gate_threshold
self.prenet = Prenet(
hparams.n_mel_channels * hparams.n_frames_per_step,
[hparams.prenet_dim, hparams.prenet_dim])
self.attention_rnn = nn.LSTMCell(
hparams.decoder_rnn_dim + hparams.encoder_embedding_dim,
hparams.attention_rnn_dim)
self.attention_layer = Attention(
hparams.attention_rnn_dim, hparams.encoder_embedding_dim,
hparams.attention_dim, hparams.attention_location_n_filters,
hparams.attention_location_kernel_size)
self.decoder_rnn = nn.LSTMCell(
hparams.prenet_dim + hparams.encoder_embedding_dim,
hparams.decoder_rnn_dim, 1)
self.linear_projection = LinearNorm(
hparams.decoder_rnn_dim + hparams.encoder_embedding_dim,
hparams.n_mel_channels*hparams.n_frames_per_step)
self.gate_layer = LinearNorm(
hparams.decoder_rnn_dim + hparams.encoder_embedding_dim, 1,
bias=True, w_init_gain='sigmoid')
def get_go_frame(self, memory):
""" Gets all zeros frames to use as first decoder input
PARAMS
------
memory: decoder outputs
RETURNS
-------
decoder_input: all zeros frames
"""
B = memory.size(0)
decoder_input = Variable(memory.data.new(
B, self.n_mel_channels * self.n_frames_per_step).zero_())
return decoder_input
def initialize_decoder_states(self, memory, mask):
""" Initializes attention rnn states, decoder rnn states, attention
weights, attention cumulative weights, attention context, stores memory
and stores processed memory
PARAMS
------
memory: Encoder outputs
mask: Mask for padded data if training, expects None for inference
"""
B = memory.size(0)
MAX_TIME = memory.size(1)
self.attention_hidden = Variable(memory.data.new(
B, self.attention_rnn_dim).zero_())
self.attention_cell = Variable(memory.data.new(
B, self.attention_rnn_dim).zero_())
self.decoder_hidden = Variable(memory.data.new(
B, self.decoder_rnn_dim).zero_())
self.decoder_cell = Variable(memory.data.new(
B, self.decoder_rnn_dim).zero_())
self.attention_weights = Variable(memory.data.new(
B, MAX_TIME).zero_())
self.attention_weights_cum = Variable(memory.data.new(
B, MAX_TIME).zero_())
self.attention_context = Variable(memory.data.new(
B, self.encoder_embedding_dim).zero_())
self.memory = memory
self.processed_memory = self.attention_layer.memory_layer(memory)
self.mask = mask
def parse_decoder_inputs(self, decoder_inputs):
""" Prepares decoder inputs, i.e. mel outputs
PARAMS
------
decoder_inputs: inputs used for teacher-forced training, i.e. mel-specs
RETURNS
-------
inputs: processed decoder inputs
"""
# (B, n_mel_channels, T_out) -> (B, T_out, n_mel_channels)
decoder_inputs = decoder_inputs.transpose(1, 2)
decoder_inputs = decoder_inputs.view(
decoder_inputs.size(0),
int(decoder_inputs.size(1)/self.n_frames_per_step), -1)
# (B, T_out, n_mel_channels) -> (T_out, B, n_mel_channels)
decoder_inputs = decoder_inputs.transpose(0, 1)
return decoder_inputs
def parse_decoder_outputs(self, mel_outputs, gate_outputs, alignments):
""" Prepares decoder outputs for output
PARAMS
------
mel_outputs:
gate_outputs: gate output energies
alignments:
RETURNS
-------
mel_outputs:
gate_outpust: gate output energies
alignments:
"""
# (T_out, B) -> (B, T_out)
alignments = torch.stack(alignments).transpose(0, 1)
# (T_out, B) -> (B, T_out)
gate_outputs = torch.stack(gate_outputs).transpose(0, 1)
gate_outputs = gate_outputs.contiguous()
# (T_out, B, n_mel_channels) -> (B, T_out, n_mel_channels)
mel_outputs = torch.stack(mel_outputs).transpose(0, 1).contiguous()
# decouple frames per step
mel_outputs = mel_outputs.view(
mel_outputs.size(0), -1, self.n_mel_channels)
# (B, T_out, n_mel_channels) -> (B, n_mel_channels, T_out)
mel_outputs = mel_outputs.transpose(1, 2)
return mel_outputs, gate_outputs, alignments
def decode(self, decoder_input):
""" Decoder step using stored states, attention and memory
PARAMS
------
decoder_input: previous mel output
RETURNS
-------
mel_output:
gate_output: gate output energies
attention_weights:
"""
cell_input = torch.cat((self.decoder_hidden, self.attention_context), -1)
self.attention_hidden, self.attention_cell = self.attention_rnn(
cell_input, (self.attention_hidden, self.attention_cell))
attention_weights_cat = torch.cat(
(self.attention_weights.unsqueeze(1),
self.attention_weights_cum.unsqueeze(1)), dim=1)
self.attention_context, self.attention_weights = self.attention_layer(
self.attention_hidden, self.memory, self.processed_memory,
attention_weights_cat, self.mask)
self.attention_weights_cum += self.attention_weights
prenet_output = self.prenet(decoder_input)
decoder_input = torch.cat((prenet_output, self.attention_context), -1)
self.decoder_hidden, self.decoder_cell = self.decoder_rnn(
decoder_input, (self.decoder_hidden, self.decoder_cell))
decoder_hidden_attention_context = torch.cat(
(self.decoder_hidden, self.attention_context), dim=1)
decoder_output = self.linear_projection(
decoder_hidden_attention_context)
gate_prediction = self.gate_layer(decoder_hidden_attention_context)
return decoder_output, gate_prediction, self.attention_weights
def forward(self, memory, decoder_inputs, memory_lengths):
""" Decoder forward pass for training
PARAMS
------
memory: Encoder outputs
decoder_inputs: Decoder inputs for teacher forcing. i.e. mel-specs
memory_lengths: Encoder output lengths for attention masking.
RETURNS
-------
mel_outputs: mel outputs from the decoder
gate_outputs: gate outputs from the decoder
alignments: sequence of attention weights from the decoder
"""
decoder_input = self.get_go_frame(memory)
decoder_inputs = self.parse_decoder_inputs(decoder_inputs)
self.initialize_decoder_states(
memory, mask=~get_mask_from_lengths(memory_lengths))
mel_outputs, gate_outputs, alignments = [], [], []
while len(mel_outputs) < decoder_inputs.size(0):
mel_output, gate_output, attention_weights = self.decode(
decoder_input)
mel_outputs += [mel_output]
gate_outputs += [gate_output.squeeze(1)]
alignments += [attention_weights]
decoder_input = decoder_inputs[len(mel_outputs) - 1]
mel_outputs, gate_outputs, alignments = self.parse_decoder_outputs(
mel_outputs, gate_outputs, alignments)
return mel_outputs, gate_outputs, alignments
def inference(self, memory):
""" Decoder inference
PARAMS
------
memory: Encoder outputs
RETURNS
-------
mel_outputs: mel outputs from the decoder
gate_outputs: gate outputs from the decoder
alignments: sequence of attention weights from the decoder
"""
decoder_input = self.get_go_frame(memory)
self.initialize_decoder_states(memory, mask=None)
mel_outputs, gate_outputs, alignments = [], [], []
while True:
mel_output, gate_output, alignment = self.decode(decoder_input)
mel_outputs += [mel_output]
gate_outputs += [gate_output.squeeze(1)]
alignments += [alignment]
if F.sigmoid(gate_output.data) > self.gate_threshold:
break
elif len(mel_outputs) == self.max_decoder_steps:
print("Warning! Reached max decoder steps")
break
decoder_input = mel_output
mel_outputs, gate_outputs, alignments = self.parse_decoder_outputs(
mel_outputs, gate_outputs, alignments)
return mel_outputs, gate_outputs, alignments
class Tacotron2(nn.Module):
def __init__(self, hparams):
super(Tacotron2, self).__init__()
self.mask_padding = hparams.mask_padding
self.fp16_run = hparams.fp16_run
self.n_mel_channels = hparams.n_mel_channels
self.n_frames_per_step = hparams.n_frames_per_step
self.embedding = nn.Embedding(
hparams.n_symbols, hparams.symbols_embedding_dim)
torch.nn.init.xavier_uniform_(self.embedding.weight.data)
self.encoder = Encoder(hparams)
self.decoder = Decoder(hparams)
self.postnet = Postnet(hparams)
def parse_batch(self, batch):
text_padded, input_lengths, mel_padded, gate_padded, \
output_lengths = batch
text_padded = to_gpu(text_padded).long()
max_len = int(torch.max(input_lengths.data).numpy())
input_lengths = to_gpu(input_lengths).long()
mel_padded = to_gpu(mel_padded).float()
gate_padded = to_gpu(gate_padded).float()
output_lengths = to_gpu(output_lengths).long()
return (
(text_padded, input_lengths, mel_padded, max_len, output_lengths),
(mel_padded, gate_padded))
def parse_input(self, inputs):
inputs = fp32_to_fp16(inputs) if self.fp16_run else inputs
return inputs
def parse_output(self, outputs, output_lengths=None):
if self.mask_padding and output_lengths is not None:
mask = ~get_mask_from_lengths(output_lengths+1) # +1 <stop> token
mask = mask.expand(self.n_mel_channels, mask.size(0), mask.size(1))
mask = mask.permute(1, 0, 2)
outputs[0].data.masked_fill_(mask, 0.0)
outputs[1].data.masked_fill_(mask, 0.0)
outputs[2].data.masked_fill_(mask[:, 0, :], 1e3) # gate energies
outputs = fp16_to_fp32(outputs) if self.fp16_run else outputs
return outputs
def forward(self, inputs):
inputs, input_lengths, targets, max_len, \
output_lengths = self.parse_input(inputs)
input_lengths, output_lengths = input_lengths.data, output_lengths.data
embedded_inputs = self.embedding(inputs).transpose(1, 2)
encoder_outputs = self.encoder(embedded_inputs, input_lengths)
mel_outputs, gate_outputs, alignments = self.decoder(
encoder_outputs, targets, memory_lengths=input_lengths)
mel_outputs_postnet = self.postnet(mel_outputs)
mel_outputs_postnet = mel_outputs + mel_outputs_postnet
# DataParallel expects equal sized inputs/outputs, hence padding
if input_lengths is not None:
alignments = alignments.unsqueeze(0)
alignments = nn.functional.pad(
alignments,
(0, max_len - alignments.size(3), 0, 0),
"constant", 0)
alignments = alignments.squeeze()
return self.parse_output(
[mel_outputs, mel_outputs_postnet, gate_outputs, alignments],
output_lengths)
def inference(self, inputs):
inputs = self.parse_input(inputs)
embedded_inputs = self.embedding(inputs).transpose(1, 2)
encoder_outputs = self.encoder.inference(embedded_inputs)
mel_outputs, gate_outputs, alignments = self.decoder.inference(
encoder_outputs)
mel_outputs_postnet = self.postnet(mel_outputs)
mel_outputs_postnet = mel_outputs + mel_outputs_postnet
outputs = self.parse_output(
[mel_outputs, mel_outputs_postnet, gate_outputs, alignments])
return outputs
|
"""
BSD 3-Clause License
Copyright (c) 2017, Prem Seetharaman
All rights reserved.
* Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""
import torch
import numpy as np
import torch.nn.functional as F
from torch.autograd import Variable
from scipy.signal import get_window
from librosa.util import pad_center, tiny
from audio_processing import window_sumsquare
class STFT(torch.nn.Module):
"""adapted from Prem Seetharaman's https://github.com/pseeth/pytorch-stft"""
def __init__(self, filter_length=800, hop_length=200, win_length=800,
window='hann'):
super(STFT, self).__init__()
self.filter_length = filter_length
self.hop_length = hop_length
self.win_length = win_length
self.window = window
self.forward_transform = None
scale = self.filter_length / self.hop_length
fourier_basis = np.fft.fft(np.eye(self.filter_length))
cutoff = int((self.filter_length / 2 + 1))
fourier_basis = np.vstack([np.real(fourier_basis[:cutoff, :]),
np.imag(fourier_basis[:cutoff, :])])
forward_basis = torch.FloatTensor(fourier_basis[:, None, :])
inverse_basis = torch.FloatTensor(
np.linalg.pinv(scale * fourier_basis).T[:, None, :])
if window is not None:
assert(win_length >= filter_length)
# get window and zero center pad it to filter_length
fft_window = get_window(window, win_length, fftbins=True)
fft_window = pad_center(fft_window, filter_length)
fft_window = torch.from_numpy(fft_window).float()
# window the bases
forward_basis *= fft_window
inverse_basis *= fft_window
self.register_buffer('forward_basis', forward_basis.float())
self.register_buffer('inverse_basis', inverse_basis.float())
def transform(self, input_data):
num_batches = input_data.size(0)
num_samples = input_data.size(1)
self.num_samples = num_samples
# similar to librosa, reflect-pad the input
input_data = input_data.view(num_batches, 1, num_samples)
input_data = F.pad(
input_data.unsqueeze(1),
(int(self.filter_length / 2), int(self.filter_length / 2), 0, 0),
mode='reflect')
input_data = input_data.squeeze(1)
forward_transform = F.conv1d(
input_data,
Variable(self.forward_basis, requires_grad=False),
stride=self.hop_length,
padding=0)
cutoff = int((self.filter_length / 2) + 1)
real_part = forward_transform[:, :cutoff, :]
imag_part = forward_transform[:, cutoff:, :]
magnitude = torch.sqrt(real_part**2 + imag_part**2)
phase = torch.autograd.Variable(
torch.atan2(imag_part.data, real_part.data))
return magnitude, phase
def inverse(self, magnitude, phase):
recombine_magnitude_phase = torch.cat(
[magnitude*torch.cos(phase), magnitude*torch.sin(phase)], dim=1)
inverse_transform = F.conv_transpose1d(
recombine_magnitude_phase,
Variable(self.inverse_basis, requires_grad=False),
stride=self.hop_length,
padding=0)
if self.window is not None:
window_sum = window_sumsquare(
self.window, magnitude.size(-1), hop_length=self.hop_length,
win_length=self.win_length, n_fft=self.filter_length,
dtype=np.float32)
# remove modulation effects
approx_nonzero_indices = torch.from_numpy(
np.where(window_sum > tiny(window_sum))[0])
window_sum = torch.autograd.Variable(
torch.from_numpy(window_sum), requires_grad=False)
inverse_transform[:, :, approx_nonzero_indices] /= window_sum[approx_nonzero_indices]
# scale by hop ratio
inverse_transform *= float(self.filter_length) / self.hop_length
inverse_transform = inverse_transform[:, :, int(self.filter_length/2):]
inverse_transform = inverse_transform[:, :, :-int(self.filter_length/2):]
return inverse_transform
def forward(self, input_data):
self.magnitude, self.phase = self.transform(input_data)
reconstruction = self.inverse(self.magnitude, self.phase)
return reconstruction
|
import torch
import torch.distributed as dist
from torch.nn.modules import Module
def _flatten_dense_tensors(tensors):
"""Flatten dense tensors into a contiguous 1D buffer. Assume tensors are of
same dense type.
Since inputs are dense, the resulting tensor will be a concatenated 1D
buffer. Element-wise operation on this buffer will be equivalent to
operating individually.
Arguments:
tensors (Iterable[Tensor]): dense tensors to flatten.
Returns:
A contiguous 1D buffer containing input tensors.
"""
if len(tensors) == 1:
return tensors[0].contiguous().view(-1)
flat = torch.cat([t.contiguous().view(-1) for t in tensors], dim=0)
return flat
def _unflatten_dense_tensors(flat, tensors):
"""View a flat buffer using the sizes of tensors. Assume that tensors are of
same dense type, and that flat is given by _flatten_dense_tensors.
Arguments:
flat (Tensor): flattened dense tensors to unflatten.
tensors (Iterable[Tensor]): dense tensors whose sizes will be used to
unflatten flat.
Returns:
Unflattened dense tensors with sizes same as tensors and values from
flat.
"""
outputs = []
offset = 0
for tensor in tensors:
numel = tensor.numel()
outputs.append(flat.narrow(0, offset, numel).view_as(tensor))
offset += numel
return tuple(outputs)
'''
This version of DistributedDataParallel is designed to be used in conjunction with the multiproc.py
launcher included with this example. It assumes that your run is using multiprocess with 1
GPU/process, that the model is on the correct device, and that torch.set_device has been
used to set the device.
Parameters are broadcasted to the other processes on initialization of DistributedDataParallel,
and will be allreduced at the finish of the backward pass.
'''
class DistributedDataParallel(Module):
def __init__(self, module):
super(DistributedDataParallel, self).__init__()
#fallback for PyTorch 0.3
if not hasattr(dist, '_backend'):
self.warn_on_half = True
else:
self.warn_on_half = True if dist._backend == dist.dist_backend.GLOO else False
self.module = module
for p in self.module.state_dict().values():
if not torch.is_tensor(p):
continue
dist.broadcast(p, 0)
def allreduce_params():
if(self.needs_reduction):
self.needs_reduction = False
buckets = {}
for param in self.module.parameters():
if param.requires_grad and param.grad is not None:
tp = type(param.data)
if tp not in buckets:
buckets[tp] = []
buckets[tp].append(param)
if self.warn_on_half:
if torch.cuda.HalfTensor in buckets:
print("WARNING: gloo dist backend for half parameters may be extremely slow." +
" It is recommended to use the NCCL backend in this case. This currently requires" +
"PyTorch built from top of tree master.")
self.warn_on_half = False
for tp in buckets:
bucket = buckets[tp]
grads = [param.grad.data for param in bucket]
coalesced = _flatten_dense_tensors(grads)
dist.all_reduce(coalesced)
coalesced /= dist.get_world_size()
for buf, synced in zip(grads, _unflatten_dense_tensors(coalesced, grads)):
buf.copy_(synced)
for param in list(self.module.parameters()):
def allreduce_hook(*unused):
param._execution_engine.queue_callback(allreduce_params)
if param.requires_grad:
param.register_hook(allreduce_hook)
def forward(self, *inputs, **kwargs):
self.needs_reduction = True
return self.module(*inputs, **kwargs)
'''
def _sync_buffers(self):
buffers = list(self.module._all_buffers())
if len(buffers) > 0:
# cross-node buffer sync
flat_buffers = _flatten_dense_tensors(buffers)
dist.broadcast(flat_buffers, 0)
for buf, synced in zip(buffers, _unflatten_dense_tensors(flat_buffers, buffers)):
buf.copy_(synced)
def train(self, mode=True):
# Clear NCCL communicator and CUDA event cache of the default group ID,
# These cache will be recreated at the later call. This is currently a
# work-around for a potential NCCL deadlock.
if dist._backend == dist.dist_backend.NCCL:
dist._clear_group_cache()
super(DistributedDataParallel, self).train(mode)
self.module.train(mode)
'''
|
import random
import numpy as np
import torch
import torch.utils.data
import layers
from utils import load_wav_to_torch, load_filepaths_and_text
from text import text_to_sequence
class TextMelLoader(torch.utils.data.Dataset):
"""
1) loads audio,text pairs
2) normalizes text and converts them to sequences of one-hot vectors
3) computes mel-spectrograms from audio files.
"""
def __init__(self, audiopaths_and_text, hparams, shuffle=True):
self.audiopaths_and_text = load_filepaths_and_text(
audiopaths_and_text, hparams.sort_by_length)
self.text_cleaners = hparams.text_cleaners
self.max_wav_value = hparams.max_wav_value
self.sampling_rate = hparams.sampling_rate
self.load_mel_from_disk = hparams.load_mel_from_disk
self.stft = layers.TacotronSTFT(
hparams.filter_length, hparams.hop_length, hparams.win_length,
hparams.n_mel_channels, hparams.sampling_rate, hparams.mel_fmin,
hparams.mel_fmax)
random.seed(1234)
if shuffle:
random.shuffle(self.audiopaths_and_text)
def get_mel_text_pair(self, audiopath_and_text):
# separate filename and text
audiopath, text = audiopath_and_text[0], audiopath_and_text[1]
text = self.get_text(text)
mel = self.get_mel(audiopath)
return (text, mel)
def get_mel(self, filename):
if not self.load_mel_from_disk:
audio = load_wav_to_torch(filename, self.sampling_rate)
audio_norm = audio / self.max_wav_value
audio_norm = audio_norm.unsqueeze(0)
audio_norm = torch.autograd.Variable(audio_norm, requires_grad=False)
melspec = self.stft.mel_spectrogram(audio_norm)
melspec = torch.squeeze(melspec, 0)
else:
melspec = torch.from_numpy(np.load(filename))
assert melspec.size(0) == self.stft.n_mel_channels, (
'Mel dimension mismatch: given {}, expected {}'.format(
melspec.size(0), self.stft.n_mel_channels))
return melspec
def get_text(self, text):
text_norm = torch.IntTensor(text_to_sequence(text, self.text_cleaners))
return text_norm
def __getitem__(self, index):
return self.get_mel_text_pair(self.audiopaths_and_text[index])
def __len__(self):
return len(self.audiopaths_and_text)
class TextMelCollate():
""" Zero-pads model inputs and targets based on number of frames per setep
"""
def __init__(self, n_frames_per_step):
self.n_frames_per_step = n_frames_per_step
def __call__(self, batch):
"""Collate's training batch from normalized text and mel-spectrogram
PARAMS
------
batch: [text_normalized, mel_normalized]
"""
# Right zero-pad all one-hot text sequences to max input length
input_lengths, ids_sorted_decreasing = torch.sort(
torch.LongTensor([len(x[0]) for x in batch]),
dim=0, descending=True)
max_input_len = input_lengths[0]
text_padded = torch.LongTensor(len(batch), max_input_len)
text_padded.zero_()
for i in range(len(ids_sorted_decreasing)):
text = batch[ids_sorted_decreasing[i]][0]
text_padded[i, :text.size(0)] = text
# Right zero-pad mel-spec with extra single zero vector to mark the end
num_mels = batch[0][1].size(0)
max_target_len = max([x[1].size(1) for x in batch]) + 1
if max_target_len % self.n_frames_per_step != 0:
max_target_len += self.n_frames_per_step - max_target_len % self.n_frames_per_step
assert max_target_len % self.n_frames_per_step == 0
# include mel padded and gate padded
mel_padded = torch.FloatTensor(len(batch), num_mels, max_target_len)
mel_padded.zero_()
gate_padded = torch.FloatTensor(len(batch), max_target_len)
gate_padded.zero_()
output_lengths = torch.LongTensor(len(batch))
for i in range(len(ids_sorted_decreasing)):
mel = batch[ids_sorted_decreasing[i]][1]
mel_padded[i, :, :mel.size(1)] = mel
gate_padded[i, mel.size(1):] = 1
output_lengths[i] = mel.size(1)
return text_padded, input_lengths, mel_padded, gate_padded, \
output_lengths
|
from torch import nn
class Tacotron2Loss(nn.Module):
def __init__(self):
super(Tacotron2Loss, self).__init__()
def forward(self, model_output, targets):
mel_target, gate_target = targets[0], targets[1]
mel_target.requires_grad = False
gate_target.requires_grad = False
gate_target = gate_target.view(-1, 1)
mel_out, mel_out_postnet, gate_out, _ = model_output
gate_out = gate_out.view(-1, 1)
mel_loss = nn.MSELoss()(mel_out, mel_target) + \
nn.MSELoss()(mel_out_postnet, mel_target)
gate_loss = nn.BCEWithLogitsLoss()(gate_out, gate_target)
return mel_loss + gate_loss
|
import numpy as np
from scipy.io.wavfile import read
import torch
def get_mask_from_lengths(lengths):
max_len = torch.max(lengths)
ids = torch.arange(0, max_len).long().cuda()
mask = (ids < lengths.unsqueeze(1)).byte()
return mask
def load_wav_to_torch(full_path, sr):
sampling_rate, data = read(full_path)
assert sr == sampling_rate, "{} SR doesn't match {} on path {}".format(
sr, sampling_rate, full_path)
return torch.FloatTensor(data.astype(np.float32))
def load_filepaths_and_text(filename, sort_by_length, split="|"):
with open(filename, encoding='utf-8') as f:
filepaths_and_text = [line.strip().split(split) for line in f]
if sort_by_length:
filepaths_and_text.sort(key=lambda x: len(x[1]))
return filepaths_and_text
def to_gpu(x):
x = x.contiguous().cuda(async=True)
return torch.autograd.Variable(x)
|
import os
import time
import argparse
import math
from numpy import finfo
import torch
from distributed import DistributedDataParallel
from torch.utils.data.distributed import DistributedSampler
from torch.nn import DataParallel
from torch.utils.data import DataLoader
from fp16_optimizer import FP16_Optimizer
from model import Tacotron2
from data_utils import TextMelLoader, TextMelCollate
from loss_function import Tacotron2Loss
from logger import Tacotron2Logger
from hparams import create_hparams
def batchnorm_to_float(module):
"""Converts batch norm modules to FP32"""
if isinstance(module, torch.nn.modules.batchnorm._BatchNorm):
module.float()
for child in module.children():
batchnorm_to_float(child)
return module
def reduce_tensor(tensor, num_gpus):
rt = tensor.clone()
torch.distributed.all_reduce(rt, op=torch.distributed.reduce_op.SUM)
rt /= num_gpus
return rt
def init_distributed(hparams, n_gpus, rank, group_name):
assert torch.cuda.is_available(), "Distributed mode requires CUDA."
print("Initializing distributed")
# Set cuda device so everything is done on the right GPU.
torch.cuda.set_device(rank % torch.cuda.device_count())
# Initialize distributed communication
torch.distributed.init_process_group(
backend=hparams.dist_backend, init_method=hparams.dist_url,
world_size=n_gpus, rank=rank, group_name=group_name)
print("Done initializing distributed")
def prepare_dataloaders(hparams):
# Get data, data loaders and collate function ready
trainset = TextMelLoader(hparams.training_files, hparams)
valset = TextMelLoader(hparams.validation_files, hparams)
collate_fn = TextMelCollate(hparams.n_frames_per_step)
train_sampler = DistributedSampler(trainset) \
if hparams.distributed_run else None
train_loader = DataLoader(trainset, num_workers=1, shuffle=False,
sampler=train_sampler,
batch_size=hparams.batch_size, pin_memory=False,
drop_last=True, collate_fn=collate_fn)
return train_loader, valset, collate_fn
def prepare_directories_and_logger(output_directory, log_directory, rank):
if rank == 0:
if not os.path.isdir(output_directory):
os.makedirs(output_directory)
os.chmod(output_directory, 0o775)
logger = Tacotron2Logger(os.path.join(output_directory, log_directory))
else:
logger = None
return logger
def load_model(hparams):
model = Tacotron2(hparams).cuda()
if hparams.fp16_run:
model = batchnorm_to_float(model.half())
model.decoder.attention_layer.score_mask_value = float(finfo('float16').min)
if hparams.distributed_run:
model = DistributedDataParallel(model)
elif torch.cuda.device_count() > 1:
model = DataParallel(model)
return model
def warm_start_model(checkpoint_path, model):
assert os.path.isfile(checkpoint_path)
print("Warm starting model from checkpoint '{}'".format(checkpoint_path))
checkpoint_dict = torch.load(checkpoint_path, map_location='cpu')
model.load_state_dict(checkpoint_dict['state_dict'])
return model
def load_checkpoint(checkpoint_path, model, optimizer):
assert os.path.isfile(checkpoint_path)
print("Loading checkpoint '{}'".format(checkpoint_path))
checkpoint_dict = torch.load(checkpoint_path, map_location='cpu')
model.load_state_dict(checkpoint_dict['state_dict'])
optimizer.load_state_dict(checkpoint_dict['optimizer'])
learning_rate = checkpoint_dict['learning_rate']
iteration = checkpoint_dict['iteration']
print("Loaded checkpoint '{}' from iteration {}" .format(
checkpoint_path, iteration))
return model, optimizer, learning_rate, iteration
def save_checkpoint(model, optimizer, learning_rate, iteration, filepath):
print("Saving model and optimizer state at iteration {} to {}".format(
iteration, filepath))
torch.save({'iteration': iteration,
'state_dict': model.state_dict(),
'optimizer': optimizer.state_dict(),
'learning_rate': learning_rate}, filepath)
def validate(model, criterion, valset, iteration, batch_size, n_gpus,
collate_fn, logger, distributed_run, rank):
"""Handles all the validation scoring and printing"""
model.eval()
with torch.no_grad():
val_sampler = DistributedSampler(valset) if distributed_run else None
val_loader = DataLoader(valset, sampler=val_sampler, num_workers=1,
shuffle=False, batch_size=batch_size,
pin_memory=False, collate_fn=collate_fn)
val_loss = 0.0
if distributed_run or torch.cuda.device_count() > 1:
batch_parser = model.module.parse_batch
else:
batch_parser = model.parse_batch
for i, batch in enumerate(val_loader):
x, y = batch_parser(batch)
y_pred = model(x)
loss = criterion(y_pred, y)
reduced_val_loss = reduce_tensor(loss.data, n_gpus)[0] \
if distributed_run else loss.data[0]
val_loss += reduced_val_loss
val_loss = val_loss / (i + 1)
model.train()
return val_loss
def train(output_directory, log_directory, checkpoint_path, warm_start, n_gpus,
rank, group_name, hparams):
"""Training and validation logging results to tensorboard and stdout
Params
------
output_directory (string): directory to save checkpoints
log_directory (string) directory to save tensorboard logs
checkpoint_path(string): checkpoint path
n_gpus (int): number of gpus
rank (int): rank of current gpu
hparams (object): comma separated list of "name=value" pairs.
"""
if hparams.distributed_run:
init_distributed(hparams, n_gpus, rank, group_name)
torch.manual_seed(hparams.seed)
torch.cuda.manual_seed(hparams.seed)
model = load_model(hparams)
learning_rate = hparams.learning_rate
optimizer = torch.optim.Adam(model.parameters(), lr=learning_rate,
weight_decay=hparams.weight_decay)
if hparams.fp16_run:
optimizer = FP16_Optimizer(
optimizer, dynamic_loss_scale=hparams.dynamic_loss_scaling)
criterion = Tacotron2Loss()
logger = prepare_directories_and_logger(
output_directory, log_directory, rank)
train_loader, valset, collate_fn = prepare_dataloaders(hparams)
# Load checkpoint if one exists
iteration = 0
epoch_offset = 0
if checkpoint_path is not None:
if warm_start:
model = warm_start_model(checkpoint_path, model)
else:
model, optimizer, _learning_rate, iteration = load_checkpoint(
checkpoint_path, model, optimizer)
if hparams.use_saved_learning_rate:
learning_rate = _learning_rate
iteration += 1 # next iteration is iteration + 1
epoch_offset = max(0, int(iteration / len(train_loader)))
model.train()
if hparams.distributed_run or torch.cuda.device_count() > 1:
batch_parser = model.module.parse_batch
else:
batch_parser = model.parse_batch
# ================ MAIN TRAINNIG LOOP! ===================
for epoch in range(epoch_offset, hparams.epochs):
print("Epoch: {}".format(epoch))
for i, batch in enumerate(train_loader):
start = time.perf_counter()
for param_group in optimizer.param_groups:
param_group['lr'] = learning_rate
model.zero_grad()
x, y = batch_parser(batch)
y_pred = model(x)
loss = criterion(y_pred, y)
reduced_loss = reduce_tensor(loss.data, n_gpus)[0] \
if hparams.distributed_run else loss.data[0]
if hparams.fp16_run:
optimizer.backward(loss)
grad_norm = optimizer.clip_fp32_grads(hparams.grad_clip_thresh)
else:
loss.backward()
grad_norm = torch.nn.utils.clip_grad_norm(
model.parameters(), hparams.grad_clip_thresh)
optimizer.step()
overflow = optimizer.overflow if hparams.fp16_run else False
if not overflow and not math.isnan(reduced_loss) and rank == 0:
duration = time.perf_counter() - start
print("Train loss {} {:.6f} Grad Norm {:.6f} {:.2f}s/it".format(
iteration, reduced_loss, grad_norm, duration))
logger.log_training(
reduced_loss, grad_norm, learning_rate, duration, iteration)
if not overflow and (iteration % hparams.iters_per_checkpoint == 0):
reduced_val_loss = validate(
model, criterion, valset, iteration, hparams.batch_size,
n_gpus, collate_fn, logger, hparams.distributed_run, rank)
if rank == 0:
print("Validation loss {}: {:9f} ".format(
iteration, reduced_val_loss))
logger.log_validation(
reduced_val_loss, model, y, y_pred, iteration)
checkpoint_path = os.path.join(
output_directory, "checkpoint_{}".format(iteration))
save_checkpoint(model, optimizer, learning_rate, iteration,
checkpoint_path)
iteration += 1
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('-o', '--output_directory', type=str,
help='directory to save checkpoints')
parser.add_argument('-l', '--log_directory', type=str,
help='directory to save tensorboard logs')
parser.add_argument('-c', '--checkpoint_path', type=str, default=None,
required=False, help='checkpoint path')
parser.add_argument('--warm_start', action='store_true',
help='load the model only (warm start)')
parser.add_argument('--n_gpus', type=int, default=1,
required=False, help='number of gpus')
parser.add_argument('--rank', type=int, default=0,
required=False, help='rank of current gpu')
parser.add_argument('--group_name', type=str, default='group_name',
required=False, help='Distributed group name')
parser.add_argument('--hparams', type=str,
required=False, help='comma separated name=value pairs')
args = parser.parse_args()
hparams = create_hparams(args.hparams)
torch.backends.cudnn.enabled = hparams.cudnn_enabled
torch.backends.cudnn.benchmark = hparams.cudnn_benchmark
print("FP16 Run:", hparams.fp16_run)
print("Dynamic Loss Scaling:", hparams.dynamic_loss_scaling)
print("Distributed Run:", hparams.distributed_run)
print("cuDNN Enabled:", hparams.cudnn_enabled)
print("cuDNN Benchmark:", hparams.cudnn_benchmark)
train(args.output_directory, args.log_directory, args.checkpoint_path,
args.warm_start, args.n_gpus, args.rank, args.group_name, hparams)
|
import torch
from librosa.filters import mel as librosa_mel_fn
from audio_processing import dynamic_range_compression
from audio_processing import dynamic_range_decompression
from stft import STFT
class LinearNorm(torch.nn.Module):
def __init__(self, in_dim, out_dim, bias=True, w_init_gain='linear'):
super(LinearNorm, self).__init__()
self.linear_layer = torch.nn.Linear(in_dim, out_dim, bias=bias)
torch.nn.init.xavier_uniform(
self.linear_layer.weight,
gain=torch.nn.init.calculate_gain(w_init_gain))
def forward(self, x):
return self.linear_layer(x)
class ConvNorm(torch.nn.Module):
def __init__(self, in_channels, out_channels, kernel_size=1, stride=1,
padding=None, dilation=1, bias=True, w_init_gain='linear'):
super(ConvNorm, self).__init__()
if padding is None:
assert(kernel_size % 2 == 1)
padding = int(dilation * (kernel_size - 1) / 2)
self.conv = torch.nn.Conv1d(in_channels, out_channels,
kernel_size=kernel_size, stride=stride,
padding=padding, dilation=dilation,
bias=bias)
torch.nn.init.xavier_uniform(
self.conv.weight, gain=torch.nn.init.calculate_gain(w_init_gain))
def forward(self, signal):
conv_signal = self.conv(signal)
return conv_signal
class TacotronSTFT(torch.nn.Module):
def __init__(self, filter_length=1024, hop_length=256, win_length=1024,
n_mel_channels=80, sampling_rate=22050, mel_fmin=0.0,
mel_fmax=None):
super(TacotronSTFT, self).__init__()
self.n_mel_channels = n_mel_channels
self.sampling_rate = sampling_rate
self.stft_fn = STFT(filter_length, hop_length, win_length)
mel_basis = librosa_mel_fn(
sampling_rate, filter_length, n_mel_channels, mel_fmin, mel_fmax)
mel_basis = torch.from_numpy(mel_basis).float()
self.register_buffer('mel_basis', mel_basis)
def spectral_normalize(self, magnitudes):
output = dynamic_range_compression(magnitudes)
return output
def spectral_de_normalize(self, magnitudes):
output = dynamic_range_decompression(magnitudes)
return output
def mel_spectrogram(self, y):
"""Computes mel-spectrograms from a batch of waves
PARAMS
------
y: Variable(torch.FloatTensor) with shape (B, T) in range [-1, 1]
RETURNS
-------
mel_output: torch.FloatTensor of shape (B, n_mel_channels, T)
"""
assert(torch.min(y.data) >= -1)
assert(torch.max(y.data) <= 1)
magnitudes, phases = self.stft_fn.transform(y)
magnitudes = magnitudes.data
mel_output = torch.matmul(self.mel_basis, magnitudes)
mel_output = self.spectral_normalize(mel_output)
return mel_output
|
import time
import torch
import sys
import subprocess
argslist = list(sys.argv)[1:]
num_gpus = torch.cuda.device_count()
argslist.append('--n_gpus={}'.format(num_gpus))
workers = []
job_id = time.strftime("%Y_%m_%d-%H%M%S")
argslist.append("--group_name=group_{}".format(job_id))
for i in range(num_gpus):
argslist.append('--rank={}'.format(i))
stdout = None if i == 0 else open("logs/{}_GPU_{}.log".format(job_id, i),
"w")
print(argslist)
p = subprocess.Popen([str(sys.executable)]+argslist, stdout=stdout)
workers.append(p)
argslist = argslist[:-1]
for p in workers:
p.wait()
|
import torch
class LossScaler:
def __init__(self, scale=1):
self.cur_scale = scale
# `params` is a list / generator of torch.Variable
def has_overflow(self, params):
return False
# `x` is a torch.Tensor
def _has_inf_or_nan(x):
return False
# `overflow` is boolean indicating whether we overflowed in gradient
def update_scale(self, overflow):
pass
@property
def loss_scale(self):
return self.cur_scale
def scale_gradient(self, module, grad_in, grad_out):
return tuple(self.loss_scale * g for g in grad_in)
def backward(self, loss):
scaled_loss = loss*self.loss_scale
scaled_loss.backward()
class DynamicLossScaler:
def __init__(self,
init_scale=2**32,
scale_factor=2.,
scale_window=1000):
self.cur_scale = init_scale
self.cur_iter = 0
self.last_overflow_iter = -1
self.scale_factor = scale_factor
self.scale_window = scale_window
# `params` is a list / generator of torch.Variable
def has_overflow(self, params):
# return False
for p in params:
if p.grad is not None and DynamicLossScaler._has_inf_or_nan(p.grad.data):
return True
return False
# `x` is a torch.Tensor
def _has_inf_or_nan(x):
cpu_sum = float(x.float().sum())
if cpu_sum == float('inf') or cpu_sum == -float('inf') or cpu_sum != cpu_sum:
return True
return False
# `overflow` is boolean indicating whether we overflowed in gradient
def update_scale(self, overflow):
if overflow:
#self.cur_scale /= self.scale_factor
self.cur_scale = max(self.cur_scale/self.scale_factor, 1)
self.last_overflow_iter = self.cur_iter
else:
if (self.cur_iter - self.last_overflow_iter) % self.scale_window == 0:
self.cur_scale *= self.scale_factor
# self.cur_scale = 1
self.cur_iter += 1
@property
def loss_scale(self):
return self.cur_scale
def scale_gradient(self, module, grad_in, grad_out):
return tuple(self.loss_scale * g for g in grad_in)
def backward(self, loss):
scaled_loss = loss*self.loss_scale
scaled_loss.backward()
##############################################################
# Example usage below here -- assuming it's in a separate file
##############################################################
if __name__ == "__main__":
import torch
from torch.autograd import Variable
from dynamic_loss_scaler import DynamicLossScaler
# N is batch size; D_in is input dimension;
# H is hidden dimension; D_out is output dimension.
N, D_in, H, D_out = 64, 1000, 100, 10
# Create random Tensors to hold inputs and outputs, and wrap them in Variables.
x = Variable(torch.randn(N, D_in), requires_grad=False)
y = Variable(torch.randn(N, D_out), requires_grad=False)
w1 = Variable(torch.randn(D_in, H), requires_grad=True)
w2 = Variable(torch.randn(H, D_out), requires_grad=True)
parameters = [w1, w2]
learning_rate = 1e-6
optimizer = torch.optim.SGD(parameters, lr=learning_rate)
loss_scaler = DynamicLossScaler()
for t in range(500):
y_pred = x.mm(w1).clamp(min=0).mm(w2)
loss = (y_pred - y).pow(2).sum() * loss_scaler.loss_scale
print('Iter {} loss scale: {}'.format(t, loss_scaler.loss_scale))
print('Iter {} scaled loss: {}'.format(t, loss.data[0]))
print('Iter {} unscaled loss: {}'.format(t, loss.data[0] / loss_scaler.loss_scale))
# Run backprop
optimizer.zero_grad()
loss.backward()
# Check for overflow
has_overflow = DynamicLossScaler.has_overflow(parameters)
# If no overflow, unscale grad and update as usual
if not has_overflow:
for param in parameters:
param.grad.data.mul_(1. / loss_scaler.loss_scale)
optimizer.step()
# Otherwise, don't do anything -- ie, skip iteration
else:
print('OVERFLOW!')
# Update loss scale for next iteration
loss_scaler.update_scale(has_overflow)
|
""" from https://github.com/keithito/tacotron """
import re
valid_symbols = [
'AA', 'AA0', 'AA1', 'AA2', 'AE', 'AE0', 'AE1', 'AE2', 'AH', 'AH0', 'AH1', 'AH2',
'AO', 'AO0', 'AO1', 'AO2', 'AW', 'AW0', 'AW1', 'AW2', 'AY', 'AY0', 'AY1', 'AY2',
'B', 'CH', 'D', 'DH', 'EH', 'EH0', 'EH1', 'EH2', 'ER', 'ER0', 'ER1', 'ER2', 'EY',
'EY0', 'EY1', 'EY2', 'F', 'G', 'HH', 'IH', 'IH0', 'IH1', 'IH2', 'IY', 'IY0', 'IY1',
'IY2', 'JH', 'K', 'L', 'M', 'N', 'NG', 'OW', 'OW0', 'OW1', 'OW2', 'OY', 'OY0',
'OY1', 'OY2', 'P', 'R', 'S', 'SH', 'T', 'TH', 'UH', 'UH0', 'UH1', 'UH2', 'UW',
'UW0', 'UW1', 'UW2', 'V', 'W', 'Y', 'Z', 'ZH'
]
_valid_symbol_set = set(valid_symbols)
class CMUDict:
'''Thin wrapper around CMUDict data. http://www.speech.cs.cmu.edu/cgi-bin/cmudict'''
def __init__(self, file_or_path, keep_ambiguous=True):
if isinstance(file_or_path, str):
with open(file_or_path, encoding='latin-1') as f:
entries = _parse_cmudict(f)
else:
entries = _parse_cmudict(file_or_path)
if not keep_ambiguous:
entries = {word: pron for word, pron in entries.items() if len(pron) == 1}
self._entries = entries
def __len__(self):
return len(self._entries)
def lookup(self, word):
'''Returns list of ARPAbet pronunciations of the given word.'''
return self._entries.get(word.upper())
_alt_re = re.compile(r'\([0-9]+\)')
def _parse_cmudict(file):
cmudict = {}
for line in file:
if len(line) and (line[0] >= 'A' and line[0] <= 'Z' or line[0] == "'"):
parts = line.split(' ')
word = re.sub(_alt_re, '', parts[0])
pronunciation = _get_pronunciation(parts[1])
if pronunciation:
if word in cmudict:
cmudict[word].append(pronunciation)
else:
cmudict[word] = [pronunciation]
return cmudict
def _get_pronunciation(s):
parts = s.strip().split(' ')
for part in parts:
if part not in _valid_symbol_set:
return None
return ' '.join(parts)
|
""" from https://github.com/keithito/tacotron """
import re
from text import cleaners
from text.symbols import symbols
# Mappings from symbol to numeric ID and vice versa:
_symbol_to_id = {s: i for i, s in enumerate(symbols)}
_id_to_symbol = {i: s for i, s in enumerate(symbols)}
# Regular expression matching text enclosed in curly braces:
_curly_re = re.compile(r'(.*?)\{(.+?)\}(.*)')
def text_to_sequence(text, cleaner_names):
'''Converts a string of text to a sequence of IDs corresponding to the symbols in the text.
The text can optionally have ARPAbet sequences enclosed in curly braces embedded
in it. For example, "Turn left on {HH AW1 S S T AH0 N} Street."
Args:
text: string to convert to a sequence
cleaner_names: names of the cleaner functions to run the text through
Returns:
List of integers corresponding to the symbols in the text
'''
sequence = []
# Check for curly braces and treat their contents as ARPAbet:
while len(text):
m = _curly_re.match(text)
if not m:
sequence += _symbols_to_sequence(_clean_text(text, cleaner_names))
break
sequence += _symbols_to_sequence(_clean_text(m.group(1), cleaner_names))
sequence += _arpabet_to_sequence(m.group(2))
text = m.group(3)
# Append EOS token
sequence.append(_symbol_to_id['~'])
return sequence
def sequence_to_text(sequence):
'''Converts a sequence of IDs back to a string'''
result = ''
for symbol_id in sequence:
if symbol_id in _id_to_symbol:
s = _id_to_symbol[symbol_id]
# Enclose ARPAbet back in curly braces:
if len(s) > 1 and s[0] == '@':
s = '{%s}' % s[1:]
result += s
return result.replace('}{', ' ')
def _clean_text(text, cleaner_names):
for name in cleaner_names:
cleaner = getattr(cleaners, name)
if not cleaner:
raise Exception('Unknown cleaner: %s' % name)
text = cleaner(text)
return text
def _symbols_to_sequence(symbols):
return [_symbol_to_id[s] for s in symbols if _should_keep_symbol(s)]
def _arpabet_to_sequence(text):
return _symbols_to_sequence(['@' + s for s in text.split()])
def _should_keep_symbol(s):
return s in _symbol_to_id and s != '_' and s != '~'
|
""" from https://github.com/keithito/tacotron """
import inflect
import re
_inflect = inflect.engine()
_comma_number_re = re.compile(r'([0-9][0-9\,]+[0-9])')
_decimal_number_re = re.compile(r'([0-9]+\.[0-9]+)')
_pounds_re = re.compile(r'£([0-9\,]*[0-9]+)')
_dollars_re = re.compile(r'\$([0-9\.\,]*[0-9]+)')
_ordinal_re = re.compile(r'[0-9]+(st|nd|rd|th)')
_number_re = re.compile(r'[0-9]+')
def _remove_commas(m):
return m.group(1).replace(',', '')
def _expand_decimal_point(m):
return m.group(1).replace('.', ' point ')
def _expand_dollars(m):
match = m.group(1)
parts = match.split('.')
if len(parts) > 2:
return match + ' dollars' # Unexpected format
dollars = int(parts[0]) if parts[0] else 0
cents = int(parts[1]) if len(parts) > 1 and parts[1] else 0
if dollars and cents:
dollar_unit = 'dollar' if dollars == 1 else 'dollars'
cent_unit = 'cent' if cents == 1 else 'cents'
return '%s %s, %s %s' % (dollars, dollar_unit, cents, cent_unit)
elif dollars:
dollar_unit = 'dollar' if dollars == 1 else 'dollars'
return '%s %s' % (dollars, dollar_unit)
elif cents:
cent_unit = 'cent' if cents == 1 else 'cents'
return '%s %s' % (cents, cent_unit)
else:
return 'zero dollars'
def _expand_ordinal(m):
return _inflect.number_to_words(m.group(0))
def _expand_number(m):
num = int(m.group(0))
if num > 1000 and num < 3000:
if num == 2000:
return 'two thousand'
elif num > 2000 and num < 2010:
return 'two thousand ' + _inflect.number_to_words(num % 100)
elif num % 100 == 0:
return _inflect.number_to_words(num // 100) + ' hundred'
else:
return _inflect.number_to_words(num, andword='', zero='oh', group=2).replace(', ', ' ')
else:
return _inflect.number_to_words(num, andword='')
def normalize_numbers(text):
text = re.sub(_comma_number_re, _remove_commas, text)
text = re.sub(_pounds_re, r'\1 pounds', text)
text = re.sub(_dollars_re, _expand_dollars, text)
text = re.sub(_decimal_number_re, _expand_decimal_point, text)
text = re.sub(_ordinal_re, _expand_ordinal, text)
text = re.sub(_number_re, _expand_number, text)
return text
|
""" from https://github.com/keithito/tacotron """
'''
Defines the set of symbols used in text input to the model.
The default is a set of ASCII characters that works well for English or text that has been run through Unidecode. For other data, you can modify _characters. See TRAINING_DATA.md for details. '''
from text import cmudict
_pad = '_'
_eos = '~'
_characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!\'(),-.:;? '
# Prepend "@" to ARPAbet symbols to ensure uniqueness (some are the same as uppercase letters):
_arpabet = ['@' + s for s in cmudict.valid_symbols]
# Export all symbols:
symbols = [_pad, _eos] + list(_characters) + _arpabet
|
""" from https://github.com/keithito/tacotron """
'''
Cleaners are transformations that run over the input text at both training and eval time.
Cleaners can be selected by passing a comma-delimited list of cleaner names as the "cleaners"
hyperparameter. Some cleaners are English-specific. You'll typically want to use:
1. "english_cleaners" for English text
2. "transliteration_cleaners" for non-English text that can be transliterated to ASCII using
the Unidecode library (https://pypi.python.org/pypi/Unidecode)
3. "basic_cleaners" if you do not want to transliterate (in this case, you should also update
the symbols in symbols.py to match your data).
'''
import re
from unidecode import unidecode
from .numbers import normalize_numbers
# Regular expression matching whitespace:
_whitespace_re = re.compile(r'\s+')
# List of (regular expression, replacement) pairs for abbreviations:
_abbreviations = [(re.compile('\\b%s\\.' % x[0], re.IGNORECASE), x[1]) for x in [
('mrs', 'misess'),
('mr', 'mister'),
('dr', 'doctor'),
('st', 'saint'),
('co', 'company'),
('jr', 'junior'),
('maj', 'major'),
('gen', 'general'),
('drs', 'doctors'),
('rev', 'reverend'),
('lt', 'lieutenant'),
('hon', 'honorable'),
('sgt', 'sergeant'),
('capt', 'captain'),
('esq', 'esquire'),
('ltd', 'limited'),
('col', 'colonel'),
('ft', 'fort'),
]]
def expand_abbreviations(text):
for regex, replacement in _abbreviations:
text = re.sub(regex, replacement, text)
return text
def expand_numbers(text):
return normalize_numbers(text)
def lowercase(text):
return text.lower()
def collapse_whitespace(text):
return re.sub(_whitespace_re, ' ', text)
def convert_to_ascii(text):
return unidecode(text)
def basic_cleaners(text):
'''Basic pipeline that lowercases and collapses whitespace without transliteration.'''
text = lowercase(text)
text = collapse_whitespace(text)
return text
def transliteration_cleaners(text):
'''Pipeline for non-English text that transliterates to ASCII.'''
text = convert_to_ascii(text)
text = lowercase(text)
text = collapse_whitespace(text)
return text
def english_cleaners(text):
'''Pipeline for English text, including number and abbreviation expansion.'''
text = convert_to_ascii(text)
text = lowercase(text)
text = expand_numbers(text)
text = expand_abbreviations(text)
text = collapse_whitespace(text)
return text
|
""" from https://github.com/keithito/tacotron """
import re
valid_symbols = [
'AA', 'AA0', 'AA1', 'AA2', 'AE', 'AE0', 'AE1', 'AE2', 'AH', 'AH0', 'AH1', 'AH2',
'AO', 'AO0', 'AO1', 'AO2', 'AW', 'AW0', 'AW1', 'AW2', 'AY', 'AY0', 'AY1', 'AY2',
'B', 'CH', 'D', 'DH', 'EH', 'EH0', 'EH1', 'EH2', 'ER', 'ER0', 'ER1', 'ER2', 'EY',
'EY0', 'EY1', 'EY2', 'F', 'G', 'HH', 'IH', 'IH0', 'IH1', 'IH2', 'IY', 'IY0', 'IY1',
'IY2', 'JH', 'K', 'L', 'M', 'N', 'NG', 'OW', 'OW0', 'OW1', 'OW2', 'OY', 'OY0',
'OY1', 'OY2', 'P', 'R', 'S', 'SH', 'T', 'TH', 'UH', 'UH0', 'UH1', 'UH2', 'UW',
'UW0', 'UW1', 'UW2', 'V', 'W', 'Y', 'Z', 'ZH'
]
_valid_symbol_set = set(valid_symbols)
class CMUDict:
'''Thin wrapper around CMUDict data. http://www.speech.cs.cmu.edu/cgi-bin/cmudict'''
def __init__(self, file_or_path, keep_ambiguous=True):
if isinstance(file_or_path, str):
with open(file_or_path, encoding='latin-1') as f:
entries = _parse_cmudict(f)
else:
entries = _parse_cmudict(file_or_path)
if not keep_ambiguous:
entries = {word: pron for word, pron in entries.items() if len(pron) == 1}
self._entries = entries
def __len__(self):
return len(self._entries)
def lookup(self, word):
'''Returns list of ARPAbet pronunciations of the given word.'''
return self._entries.get(word.upper())
_alt_re = re.compile(r'\([0-9]+\)')
def _parse_cmudict(file):
cmudict = {}
for line in file:
if len(line) and (line[0] >= 'A' and line[0] <= 'Z' or line[0] == "'"):
parts = line.split(' ')
word = re.sub(_alt_re, '', parts[0])
pronunciation = _get_pronunciation(parts[1])
if pronunciation:
if word in cmudict:
cmudict[word].append(pronunciation)
else:
cmudict[word] = [pronunciation]
return cmudict
def _get_pronunciation(s):
parts = s.strip().split(' ')
for part in parts:
if part not in _valid_symbol_set:
return None
return ' '.join(parts)
|
""" from https://github.com/keithito/tacotron """
import re
from . import cleaners
from .symbols import symbols
# Mappings from symbol to numeric ID and vice versa:
_symbol_to_id = {s: i for i, s in enumerate(symbols)}
_id_to_symbol = {i: s for i, s in enumerate(symbols)}
# Regular expression matching text enclosed in curly braces:
_curly_re = re.compile(r'(.*?)\{(.+?)\}(.*)')
def text_to_sequence(text, cleaner_names):
'''Converts a string of text to a sequence of IDs corresponding to the symbols in the text.
The text can optionally have ARPAbet sequences enclosed in curly braces embedded
in it. For example, "Turn left on {HH AW1 S S T AH0 N} Street."
Args:
text: string to convert to a sequence
cleaner_names: names of the cleaner functions to run the text through
Returns:
List of integers corresponding to the symbols in the text
'''
sequence = []
# Check for curly braces and treat their contents as ARPAbet:
while len(text):
m = _curly_re.match(text)
if not m:
sequence += _symbols_to_sequence(_clean_text(text, cleaner_names))
break
sequence += _symbols_to_sequence(_clean_text(m.group(1), cleaner_names))
sequence += _arpabet_to_sequence(m.group(2))
text = m.group(3)
return sequence
def sequence_to_text(sequence):
'''Converts a sequence of IDs back to a string'''
result = ''
for symbol_id in sequence:
if symbol_id in _id_to_symbol:
s = _id_to_symbol[symbol_id]
# Enclose ARPAbet back in curly braces:
if len(s) > 1 and s[0] == '@':
s = '{%s}' % s[1:]
result += s
return result.replace('}{', ' ')
def _clean_text(text, cleaner_names):
for name in cleaner_names:
cleaner = getattr(cleaners, name)
if not cleaner:
raise Exception('Unknown cleaner: %s' % name)
text = cleaner(text)
return text
def _symbols_to_sequence(symbols):
return [_symbol_to_id[s] for s in symbols if _should_keep_symbol(s)]
def _arpabet_to_sequence(text):
return _symbols_to_sequence(['@' + s for s in text.split()])
def _should_keep_symbol(s):
return s in _symbol_to_id and s != '_' and s != '~'
|
""" from https://github.com/keithito/tacotron """
import inflect
import re
_inflect = inflect.engine()
_comma_number_re = re.compile(r'([0-9][0-9\,]+[0-9])')
_decimal_number_re = re.compile(r'([0-9]+\.[0-9]+)')
_pounds_re = re.compile(r'£([0-9\,]*[0-9]+)')
_dollars_re = re.compile(r'\$([0-9\.\,]*[0-9]+)')
_ordinal_re = re.compile(r'[0-9]+(st|nd|rd|th)')
_number_re = re.compile(r'[0-9]+')
def _remove_commas(m):
return m.group(1).replace(',', '')
def _expand_decimal_point(m):
return m.group(1).replace('.', ' point ')
def _expand_dollars(m):
match = m.group(1)
parts = match.split('.')
if len(parts) > 2:
return match + ' dollars' # Unexpected format
dollars = int(parts[0]) if parts[0] else 0
cents = int(parts[1]) if len(parts) > 1 and parts[1] else 0
if dollars and cents:
dollar_unit = 'dollar' if dollars == 1 else 'dollars'
cent_unit = 'cent' if cents == 1 else 'cents'
return '%s %s, %s %s' % (dollars, dollar_unit, cents, cent_unit)
elif dollars:
dollar_unit = 'dollar' if dollars == 1 else 'dollars'
return '%s %s' % (dollars, dollar_unit)
elif cents:
cent_unit = 'cent' if cents == 1 else 'cents'
return '%s %s' % (cents, cent_unit)
else:
return 'zero dollars'
def _expand_ordinal(m):
return _inflect.number_to_words(m.group(0))
def _expand_number(m):
num = int(m.group(0))
if num > 1000 and num < 3000:
if num == 2000:
return 'two thousand'
elif num > 2000 and num < 2010:
return 'two thousand ' + _inflect.number_to_words(num % 100)
elif num % 100 == 0:
return _inflect.number_to_words(num // 100) + ' hundred'
else:
return _inflect.number_to_words(num, andword='', zero='oh', group=2).replace(', ', ' ')
else:
return _inflect.number_to_words(num, andword='')
def normalize_numbers(text):
text = re.sub(_comma_number_re, _remove_commas, text)
text = re.sub(_pounds_re, r'\1 pounds', text)
text = re.sub(_dollars_re, _expand_dollars, text)
text = re.sub(_decimal_number_re, _expand_decimal_point, text)
text = re.sub(_ordinal_re, _expand_ordinal, text)
text = re.sub(_number_re, _expand_number, text)
return text
|
""" from https://github.com/keithito/tacotron """
'''
Defines the set of symbols used in text input to the model.
The default is a set of ASCII characters that works well for English or text that has been run through Unidecode. For other data, you can modify _characters. See TRAINING_DATA.md for details. '''
from . import cmudict
_pad = '_'
_punctuation = '!\'(),.:;? '
_special = '-'
_letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
# Prepend "@" to ARPAbet symbols to ensure uniqueness (some are the same as uppercase letters):
_arpabet = ['@' + s for s in cmudict.valid_symbols]
# Export all symbols:
symbols = [_pad] + list(_special) + list(_punctuation) + list(_letters) + _arpabet
|
""" from https://github.com/keithito/tacotron """
'''
Cleaners are transformations that run over the input text at both training and eval time.
Cleaners can be selected by passing a comma-delimited list of cleaner names as the "cleaners"
hyperparameter. Some cleaners are English-specific. You'll typically want to use:
1. "english_cleaners" for English text
2. "transliteration_cleaners" for non-English text that can be transliterated to ASCII using
the Unidecode library (https://pypi.python.org/pypi/Unidecode)
3. "basic_cleaners" if you do not want to transliterate (in this case, you should also update
the symbols in symbols.py to match your data).
'''
import re
from unidecode import unidecode
from .numbers import normalize_numbers
# Regular expression matching whitespace:
_whitespace_re = re.compile(r'\s+')
# List of (regular expression, replacement) pairs for abbreviations:
_abbreviations = [(re.compile('\\b%s\\.' % x[0], re.IGNORECASE), x[1]) for x in [
('mrs', 'misess'),
('mr', 'mister'),
('dr', 'doctor'),
('st', 'saint'),
('co', 'company'),
('jr', 'junior'),
('maj', 'major'),
('gen', 'general'),
('drs', 'doctors'),
('rev', 'reverend'),
('lt', 'lieutenant'),
('hon', 'honorable'),
('sgt', 'sergeant'),
('capt', 'captain'),
('esq', 'esquire'),
('ltd', 'limited'),
('col', 'colonel'),
('ft', 'fort'),
]]
def expand_abbreviations(text):
for regex, replacement in _abbreviations:
text = re.sub(regex, replacement, text)
return text
def expand_numbers(text):
return normalize_numbers(text)
def lowercase(text):
return text.lower()
def collapse_whitespace(text):
return re.sub(_whitespace_re, ' ', text)
def convert_to_ascii(text):
return unidecode(text)
def basic_cleaners(text):
'''Basic pipeline that lowercases and collapses whitespace without transliteration.'''
text = lowercase(text)
text = collapse_whitespace(text)
return text
def transliteration_cleaners(text):
'''Pipeline for non-English text that transliterates to ASCII.'''
text = convert_to_ascii(text)
text = lowercase(text)
text = collapse_whitespace(text)
return text
def english_cleaners(text):
'''Pipeline for English text, including number and abbreviation expansion.'''
text = convert_to_ascii(text)
text = lowercase(text)
text = expand_numbers(text)
text = expand_abbreviations(text)
text = collapse_whitespace(text)
return text
|
import os
import json
import torch
import kaldi_io
import dataclasses
from .speech_transformer.transformer.decoder import Decoder
from .speech_transformer.transformer.encoder import Encoder
from .speech_transformer.transformer import Transformer
from .speech_transformer.transformer.optimizer import TransformerOptimizer
from .speech_transformer.transformer.loss import cal_performance
from .speech_transformer.utils import add_results_to_json, process_dict, IGNORE_ID
from .speech_transformer.data import build_LFR_features
from .speech_transformer.data import AudioDataLoader, AudioDataset
from torchbenchmark import DATA_PATH
@dataclasses.dataclass
class SpeechTransformerTrainConfig:
# Low Frame Rate
LFR_m = 4
LFR_n = 3
# Network Architecture - Encoder
d_input = 80
n_layers_enc = 6
n_head = 8
d_k = 64
d_v = 64
d_model = 512
d_inner = 2048
dropout = 0.1
pe_maxlen = 5000
d_word_vec = 512
n_layers_dec = 6
tgt_emb_prj_weight_sharing = 1
label_smoothing = 0.1
# minibatch
shuffle = 1
batch_frames = 15000
maxlen_in = 800
maxlen_out = 150
# don't use subprocess in dataloader
# because TorchBench is only running 1 batch
num_workers = 0
# original value
# num_workers = 4
# optimizer
k = 0.2
warmup_steps = 1
# solver configs
epochs = 5
save_folder = "output_data"
checkpoint = False
continue_from = False
model_path = 'final.pth.tar'
print_freq = 10
visdom = 0
visdom_lr = 0
visdom_epoch = 0
visdom_id = 0
cross_valid = False
# The input files. Their paths are relative to the directory of __file__
train_json = "input_data/train/data.json"
valid_json = "input_data/dev/data.json"
dict_txt = "input_data/lang_1char/train_chars.txt"
def __init__(self, prefetch=True, train_bs=32, num_train_batch=1, device='cuda'):
dir_path = os.path.join(DATA_PATH, "speech_transformer_inputs")
self.device = device
self.train_json = os.path.join(dir_path, self.train_json)
self.valid_json = os.path.join(dir_path, self.valid_json)
self.dict_txt = os.path.join(dir_path, self.dict_txt)
self.char_list, self.sos_id, self.eos_id = process_dict(self.dict_txt)
self.vocab_size = len(self.char_list)
self.tr_dataset = AudioDataset(self.train_json, train_bs,
self.maxlen_in, self.maxlen_out,
batch_frames=self.batch_frames)
self.cv_dataset = AudioDataset(self.valid_json, train_bs,
self.maxlen_in, self.maxlen_out,
batch_frames=self.batch_frames)
self.tr_loader = AudioDataLoader(self.tr_dataset, batch_size=train_bs,
num_workers=self.num_workers,
shuffle=self.shuffle,
LFR_m=self.LFR_m,
LFR_n=self.LFR_n)
self.cv_loader = AudioDataLoader(self.cv_dataset, batch_size=train_bs,
num_workers=self.num_workers,
LFR_m=self.LFR_m,
LFR_n=self.LFR_n)
self.data = {'tr_loader': self.tr_loader, 'cv_loader': self.cv_loader}
self.encoder = Encoder(self.d_input * self.LFR_m,
self.n_layers_enc,
self.n_head,
self.d_k, self.d_v,
self.d_model, self.d_inner,
dropout=self.dropout, pe_maxlen=self.pe_maxlen)
self.decoder = Decoder(self.sos_id, self.eos_id, self.vocab_size,
self.d_word_vec, self.n_layers_dec, self.n_head,
self.d_k, self.d_v, self.d_model, self.d_inner,
dropout=self.dropout,
tgt_emb_prj_weight_sharing=self.tgt_emb_prj_weight_sharing,
pe_maxlen=self.pe_maxlen)
self.tr_loss = torch.Tensor(self.epochs)
self.cv_loss = torch.Tensor(self.epochs)
self.model = Transformer(self.encoder, self.decoder)
self.optimizer = TransformerOptimizer(torch.optim.Adam(self.model.parameters(), betas=(0.9, 0.98), eps=1e-09),
self.k, self.d_model, self.warmup_steps)
self._reset()
self.data_loader = self.tr_loader if not SpeechTransformerTrainConfig.cross_valid else self.cv_loader
if prefetch:
result = []
for _batch_num, data in zip(range(num_train_batch), self.data_loader):
padded_input, input_lengths, padded_target = data
padded_input = padded_input.to(self.device)
input_lengths = input_lengths.to(self.device)
padded_target = padded_target.to(self.device)
result.append((padded_input, input_lengths, padded_target))
self.data_loader = result
def _reset(self):
self.prev_val_loss = float("inf")
self.best_val_loss = float("inf")
self.halving = False
def _run_one_epoch(self, cross_valid=False):
total_loss = 0
data_loader = self.data_loader
for i, (data) in enumerate(data_loader):
padded_input, input_lengths, padded_target = data
padded_input = padded_input.to(self.device)
input_lengths = input_lengths.to(self.device)
padded_target = padded_target.to(self.device)
pred, gold = self.model(padded_input, input_lengths, padded_target)
loss, n_correct = cal_performance(pred, gold,
smoothing=self.label_smoothing)
if not cross_valid:
self.optimizer.zero_grad()
loss.backward()
self.optimizer.step()
total_loss += loss.item()
non_pad_mask = gold.ne(IGNORE_ID)
n_word = non_pad_mask.sum().item()
return total_loss / (i + 1)
def train(self, epoch = 1):
self.model.train()
tr_avg_loss = self._run_one_epoch()
# Cross validation
self.model.eval()
val_loss = self._run_one_epoch(cross_valid=SpeechTransformerTrainConfig.cross_valid)
self.tr_loss[epoch] = tr_avg_loss
self.cv_loss[epoch] = val_loss
if val_loss < self.best_val_loss:
self.best_val_loss = val_loss
# speech transformer has a TransformerOptimizer wrapping an inner Adam optimizer. This returns the TransformerOptimizer.
def get_optimizer(self):
return self.optimizer
def set_optimizer(self, optimizer) -> None:
self.optimizer = optimizer
# Takes in an inner optimizer and wraps it in a TransformerOptimizer
def set_inner_optimizer(self, optimizer) -> None:
self.optimizer = TransformerOptimizer(optimizer, self.k, self.d_model, self.warmup_steps)
@dataclasses.dataclass
class SpeechTransformerEvalConfig:
beam_size = 5
nbest = 1
decode_max_len = 100
recog_word = 1
# The input files. Their paths are relative to the directory of __file__
recog_json = "input_data/test/data.json"
dict_txt = "input_data/lang_1char/train_chars.txt"
def __init__(self, traincfg, num_eval_batch=1, device='cuda'):
dir_path = os.path.join(DATA_PATH, "speech_transformer_inputs")
self.device = device
self.base_path = dir_path
self.recog_json = os.path.join(dir_path, self.recog_json)
self.dict_txt = os.path.join(dir_path, self.dict_txt)
# Construct the model
self.model, self.LFR_m, self.LFR_n = Transformer(traincfg.encoder, traincfg.decoder), traincfg.LFR_m, traincfg.LFR_n
self.char_list, self.sos_id, self.eos_id = process_dict(self.dict_txt)
assert self.model.decoder.sos_id == self.sos_id and self.model.decoder.eos_id == self.eos_id
# Read json data
with open(self.recog_json, "rb") as f:
self.js = json.load(f)['utts']
self.example_inputs = []
for idx, name in enumerate(list(self.js.keys())[:self.recog_word], 1):
feat_path = os.path.join(self.base_path, self.js[name]['input'][0]['feat'])
input = kaldi_io.read_mat(feat_path)
input = build_LFR_features(input, self.LFR_m, self.LFR_n)
input = torch.from_numpy(input).float()
input_length = torch.tensor([input.size(0)], dtype=torch.int)
input = input.to(self.device)
input_length = input_length.to(self.device)
self.example_inputs.append((input, input_length))
if len(self.example_inputs) == num_eval_batch:
break
def eval(self):
with torch.no_grad():
for input, input_length in self.example_inputs:
nbest_hyps = self.model.recognize(input, input_length, self.char_list, self)
return nbest_hyps
|
#!/usr/bin/env python
#
# The SpeechTransformer model copied from https://github.com/kaituoxu/Speech-Transformer, commit e684777.
# The model only supports CUDA and eager mode.
# The input data files in the input_data/ directory are generated with a minimized aishell data
# containing the following files in the original dataset:
# S0002.tar.gz, S0757.tar.gz, S0915.tar.gz
#
import os
import itertools
import torch
# set KALDI_ROOT to avoid spam message
os.environ["KALDI_ROOT"] = "/tmp"
from .config import SpeechTransformerTrainConfig, SpeechTransformerEvalConfig
from ...util.model import BenchmarkModel
from torchbenchmark.tasks import SPEECH
from typing import Tuple
NUM_TRAIN_BATCH = 1
NUM_EVAL_BATCH = 1
class Model(BenchmarkModel):
task = SPEECH.RECOGNITION
# Original batch size: 32
# Source: https://github.com/kaituoxu/Speech-Transformer/blob/e6847772d6a786336e117a03c48c62ecbf3016f6/src/bin/train.py#L68
# This model does not support batch size customization
DEFAULT_TRAIN_BSIZE = 32
DEFAULT_EVAL_BSIZE = 1
ALLOW_CUSTOMIZE_BSIZE = False
def __init__(self, test, device, batch_size=None, extra_args=[]):
super().__init__(test=test, device=device, batch_size=batch_size, extra_args=extra_args)
self.traincfg = SpeechTransformerTrainConfig(prefetch=True, train_bs=self.batch_size, num_train_batch=NUM_TRAIN_BATCH, device=self.device)
if test == "train":
self.traincfg.model.to(self.device)
self.traincfg.model.train()
elif test == "eval":
self.evalcfg = SpeechTransformerEvalConfig(self.traincfg, num_eval_batch=NUM_EVAL_BATCH, device=self.device)
self.evalcfg.model.to(self.device)
self.evalcfg.model.eval()
def get_module(self):
for data in self.traincfg.tr_loader:
padded_input, input_lengths, padded_target = data
if self.test == "train":
return self.traincfg.model, (padded_input.to(self.device), input_lengths.to(self.device), padded_target.to(self.device))
elif self.test == "eval":
return self.evalcfg.model, (padded_input.to(self.device), input_lengths.to(self.device), padded_target.to(self.device))
def set_module(self, new_model):
if self.test == "train":
self.traincfg.model = new_model
elif self.test == "eval":
self.evalcfg.model = new_model
def train(self):
self.traincfg.train(epoch=1)
def eval(self) -> Tuple[torch.Tensor]:
out = self.evalcfg.eval()
# only the first element of model output is a tensor
out = tuple(itertools.chain(*list(map(lambda x: x.values(), out))))
return (out[0], )
def get_optimizer(self):
return self.traincfg.get_optimizer()
def set_optimizer(self, optimizer) -> None:
return self.traincfg.set_optimizer(optimizer)
def set_raw_optimizer(self, optimizer) -> None:
return self.traincfg.set_raw_optimizer(optimizer)
|
import sys
import subprocess
from utils import s3_utils
def pip_install_requirements():
subprocess.check_call([sys.executable, '-m', 'pip', 'install', '-q', '-r', 'requirements.txt'])
if __name__ == '__main__':
s3_utils.checkout_s3_data("INPUT_TARBALLS", "speech_transformer_inputs.tar.gz", decompress=True)
pip_install_requirements()
|
import torch
import torch.nn as nn
import torch.nn.functional as F
from .attention import MultiHeadAttention
from .module import PositionalEncoding, PositionwiseFeedForward
from ..utils import (IGNORE_ID, get_attn_key_pad_mask, get_attn_pad_mask,
get_non_pad_mask, get_subsequent_mask, pad_list)
class Decoder(nn.Module):
''' A decoder model with self attention mechanism. '''
def __init__(
self, sos_id, eos_id,
n_tgt_vocab, d_word_vec,
n_layers, n_head, d_k, d_v,
d_model, d_inner, dropout=0.1,
tgt_emb_prj_weight_sharing=True,
pe_maxlen=5000):
super(Decoder, self).__init__()
# parameters
self.sos_id = sos_id # Start of Sentence
self.eos_id = eos_id # End of Sentence
self.n_tgt_vocab = n_tgt_vocab
self.d_word_vec = d_word_vec
self.n_layers = n_layers
self.n_head = n_head
self.d_k = d_k
self.d_v = d_v
self.d_model = d_model
self.d_inner = d_inner
self.dropout = dropout
self.tgt_emb_prj_weight_sharing = tgt_emb_prj_weight_sharing
self.pe_maxlen = pe_maxlen
self.tgt_word_emb = nn.Embedding(n_tgt_vocab, d_word_vec)
self.positional_encoding = PositionalEncoding(d_model, max_len=pe_maxlen)
self.dropout = nn.Dropout(dropout)
self.layer_stack = nn.ModuleList([
DecoderLayer(d_model, d_inner, n_head, d_k, d_v, dropout=dropout)
for _ in range(n_layers)])
self.tgt_word_prj = nn.Linear(d_model, n_tgt_vocab, bias=False)
nn.init.xavier_normal_(self.tgt_word_prj.weight)
if tgt_emb_prj_weight_sharing:
# Share the weight matrix between target word embedding & the final logit dense layer
self.tgt_word_prj.weight = self.tgt_word_emb.weight
self.x_logit_scale = (d_model ** 0.5)
else:
self.x_logit_scale = 1.
def preprocess(self, padded_input):
"""Generate decoder input and output label from padded_input
Add <sos> to decoder input, and add <eos> to decoder output label
"""
ys = [y[y != IGNORE_ID] for y in padded_input] # parse padded ys
# prepare input and output word sequences with sos/eos IDs
eos = ys[0].new([self.eos_id])
sos = ys[0].new([self.sos_id])
ys_in = [torch.cat([sos, y], dim=0) for y in ys]
ys_out = [torch.cat([y, eos], dim=0) for y in ys]
# padding for ys with -1
# pys: utt x olen
ys_in_pad = pad_list(ys_in, self.eos_id)
ys_out_pad = pad_list(ys_out, IGNORE_ID)
assert ys_in_pad.size() == ys_out_pad.size()
return ys_in_pad, ys_out_pad
def forward(self, padded_input, encoder_padded_outputs,
encoder_input_lengths, return_attns=False):
"""
Args:
padded_input: N x To
encoder_padded_outputs: N x Ti x H
Returns:
"""
dec_slf_attn_list, dec_enc_attn_list = [], []
# Get Deocder Input and Output
ys_in_pad, ys_out_pad = self.preprocess(padded_input)
# Prepare masks
non_pad_mask = get_non_pad_mask(ys_in_pad, pad_idx=self.eos_id)
slf_attn_mask_subseq = get_subsequent_mask(ys_in_pad)
slf_attn_mask_keypad = get_attn_key_pad_mask(seq_k=ys_in_pad,
seq_q=ys_in_pad,
pad_idx=self.eos_id)
slf_attn_mask = (slf_attn_mask_keypad + slf_attn_mask_subseq).gt(0)
output_length = ys_in_pad.size(1)
dec_enc_attn_mask = get_attn_pad_mask(encoder_padded_outputs,
encoder_input_lengths,
output_length)
# Forward
dec_output = self.dropout(self.tgt_word_emb(ys_in_pad) * self.x_logit_scale +
self.positional_encoding(ys_in_pad))
for dec_layer in self.layer_stack:
dec_output, dec_slf_attn, dec_enc_attn = dec_layer(
dec_output, encoder_padded_outputs,
non_pad_mask=non_pad_mask,
slf_attn_mask=slf_attn_mask,
dec_enc_attn_mask=dec_enc_attn_mask)
if return_attns:
dec_slf_attn_list += [dec_slf_attn]
dec_enc_attn_list += [dec_enc_attn]
# before softmax
seq_logit = self.tgt_word_prj(dec_output)
# Return
pred, gold = seq_logit, ys_out_pad
if return_attns:
return pred, gold, dec_slf_attn_list, dec_enc_attn_list
return pred, gold
def recognize_beam(self, encoder_outputs, char_list, args):
"""Beam search, decode one utterence now.
Args:
encoder_outputs: T x H
char_list: list of character
args: args.beam
Returns:
nbest_hyps:
"""
# search params
beam = args.beam_size
nbest = args.nbest
if args.decode_max_len == 0:
maxlen = encoder_outputs.size(0)
else:
maxlen = args.decode_max_len
encoder_outputs = encoder_outputs.unsqueeze(0)
# prepare sos
ys = torch.ones(1, 1).fill_(self.sos_id).type_as(encoder_outputs).long()
# yseq: 1xT
hyp = {'score': 0.0, 'yseq': ys}
hyps = [hyp]
ended_hyps = []
for i in range(maxlen):
hyps_best_kept = []
for hyp in hyps:
ys = hyp['yseq'] # 1 x i
# -- Prepare masks
non_pad_mask = torch.ones_like(ys).float().unsqueeze(-1) # 1xix1
slf_attn_mask = get_subsequent_mask(ys)
# -- Forward
dec_output = self.dropout(
self.tgt_word_emb(ys) * self.x_logit_scale +
self.positional_encoding(ys))
for dec_layer in self.layer_stack:
dec_output, _, _ = dec_layer(
dec_output, encoder_outputs,
non_pad_mask=non_pad_mask,
slf_attn_mask=slf_attn_mask,
dec_enc_attn_mask=None)
seq_logit = self.tgt_word_prj(dec_output[:, -1])
local_scores = F.log_softmax(seq_logit, dim=1)
# topk scores
local_best_scores, local_best_ids = torch.topk(
local_scores, beam, dim=1)
for j in range(beam):
new_hyp = {}
new_hyp['score'] = hyp['score'] + local_best_scores[0, j]
new_hyp['yseq'] = torch.ones(1, (1+ys.size(1))).type_as(encoder_outputs).long()
new_hyp['yseq'][:, :ys.size(1)] = hyp['yseq']
new_hyp['yseq'][:, ys.size(1)] = int(local_best_ids[0, j])
# will be (2 x beam) hyps at most
hyps_best_kept.append(new_hyp)
hyps_best_kept = sorted(hyps_best_kept,
key=lambda x: x['score'],
reverse=True)[:beam]
# end for hyp in hyps
hyps = hyps_best_kept
# add eos in the final loop to avoid that there are no ended hyps
if i == maxlen - 1:
for hyp in hyps:
hyp['yseq'] = torch.cat([hyp['yseq'],
torch.ones(1, 1).fill_(self.eos_id).type_as(encoder_outputs).long()], dim=1)
# add ended hypothes to a final list, and removed them from current hypothes
# (this will be a probmlem, number of hyps < beam)
remained_hyps = []
for hyp in hyps:
if hyp['yseq'][0, -1] == self.eos_id:
ended_hyps.append(hyp)
else:
remained_hyps.append(hyp)
hyps = remained_hyps
if len(hyps) > 0:
# print('remeined hypothes: ' + str(len(hyps)))
pass
else:
print('no hypothesis. Finish decoding.')
break
# for hyp in hyps:
# print('hypo: ' + ''.join([char_list[int(x)]
# for x in hyp['yseq'][0, 1:]]))
# end for i in range(maxlen)
nbest_hyps = sorted(ended_hyps, key=lambda x: x['score'], reverse=True)[
:min(len(ended_hyps), nbest)]
# compitable with LAS implementation
for hyp in nbest_hyps:
hyp['yseq'] = hyp['yseq'][0].cpu().numpy().tolist()
return nbest_hyps
class DecoderLayer(nn.Module):
''' Compose with three layers '''
def __init__(self, d_model, d_inner, n_head, d_k, d_v, dropout=0.1):
super(DecoderLayer, self).__init__()
self.slf_attn = MultiHeadAttention(n_head, d_model, d_k, d_v, dropout=dropout)
self.enc_attn = MultiHeadAttention(n_head, d_model, d_k, d_v, dropout=dropout)
self.pos_ffn = PositionwiseFeedForward(d_model, d_inner, dropout=dropout)
def forward(self, dec_input, enc_output, non_pad_mask=None, slf_attn_mask=None, dec_enc_attn_mask=None):
dec_output, dec_slf_attn = self.slf_attn(
dec_input, dec_input, dec_input, mask=slf_attn_mask)
dec_output *= non_pad_mask
dec_output, dec_enc_attn = self.enc_attn(
dec_output, enc_output, enc_output, mask=dec_enc_attn_mask)
dec_output *= non_pad_mask
dec_output = self.pos_ffn(dec_output)
dec_output *= non_pad_mask
return dec_output, dec_slf_attn, dec_enc_attn
|
import numpy as np
import torch
import torch.nn as nn
class MultiHeadAttention(nn.Module):
''' Multi-Head Attention module '''
def __init__(self, n_head, d_model, d_k, d_v, dropout=0.1):
super().__init__()
self.n_head = n_head
self.d_k = d_k
self.d_v = d_v
self.w_qs = nn.Linear(d_model, n_head * d_k)
self.w_ks = nn.Linear(d_model, n_head * d_k)
self.w_vs = nn.Linear(d_model, n_head * d_v)
nn.init.normal_(self.w_qs.weight, mean=0, std=np.sqrt(2.0 / (d_model + d_k)))
nn.init.normal_(self.w_ks.weight, mean=0, std=np.sqrt(2.0 / (d_model + d_k)))
nn.init.normal_(self.w_vs.weight, mean=0, std=np.sqrt(2.0 / (d_model + d_v)))
self.attention = ScaledDotProductAttention(temperature=np.power(d_k, 0.5),
attn_dropout=dropout)
self.layer_norm = nn.LayerNorm(d_model)
self.fc = nn.Linear(n_head * d_v, d_model)
nn.init.xavier_normal_(self.fc.weight)
self.dropout = nn.Dropout(dropout)
def forward(self, q, k, v, mask=None):
d_k, d_v, n_head = self.d_k, self.d_v, self.n_head
sz_b, len_q, _ = q.size()
sz_b, len_k, _ = k.size()
sz_b, len_v, _ = v.size()
residual = q
q = self.w_qs(q).view(sz_b, len_q, n_head, d_k)
k = self.w_ks(k).view(sz_b, len_k, n_head, d_k)
v = self.w_vs(v).view(sz_b, len_v, n_head, d_v)
q = q.permute(2, 0, 1, 3).contiguous().view(-1, len_q, d_k) # (n*b) x lq x dk
k = k.permute(2, 0, 1, 3).contiguous().view(-1, len_k, d_k) # (n*b) x lk x dk
v = v.permute(2, 0, 1, 3).contiguous().view(-1, len_v, d_v) # (n*b) x lv x dv
if mask is not None:
mask = mask.repeat(n_head, 1, 1) # (n*b) x .. x ..
output, attn = self.attention(q, k, v, mask=mask)
output = output.view(n_head, sz_b, len_q, d_v)
output = output.permute(1, 2, 0, 3).contiguous().view(sz_b, len_q, -1) # b x lq x (n*dv)
output = self.dropout(self.fc(output))
output = self.layer_norm(output + residual)
return output, attn
class ScaledDotProductAttention(nn.Module):
''' Scaled Dot-Product Attention '''
def __init__(self, temperature, attn_dropout=0.1):
super().__init__()
self.temperature = temperature
self.dropout = nn.Dropout(attn_dropout)
self.softmax = nn.Softmax(dim=2)
def forward(self, q, k, v, mask=None):
attn = torch.bmm(q, k.transpose(1, 2))
attn = attn / self.temperature
if mask is not None:
attn = attn.masked_fill(mask.bool(), -np.inf)
attn = self.softmax(attn)
attn = self.dropout(attn)
output = torch.bmm(attn, v)
return output, attn
|
from .transformer import *
|
import torch.nn as nn
from .attention import MultiHeadAttention
from .module import PositionalEncoding, PositionwiseFeedForward
from ..utils import get_non_pad_mask, get_attn_pad_mask
class Encoder(nn.Module):
"""Encoder of Transformer including self-attention and feed forward.
"""
def __init__(self, d_input, n_layers, n_head, d_k, d_v,
d_model, d_inner, dropout=0.1, pe_maxlen=5000):
super(Encoder, self).__init__()
# parameters
self.d_input = d_input
self.n_layers = n_layers
self.n_head = n_head
self.d_k = d_k
self.d_v = d_v
self.d_model = d_model
self.d_inner = d_inner
self.dropout_rate = dropout
self.pe_maxlen = pe_maxlen
# use linear transformation with layer norm to replace input embedding
self.linear_in = nn.Linear(d_input, d_model)
self.layer_norm_in = nn.LayerNorm(d_model)
self.positional_encoding = PositionalEncoding(d_model, max_len=pe_maxlen)
self.dropout = nn.Dropout(dropout)
self.layer_stack = nn.ModuleList([
EncoderLayer(d_model, d_inner, n_head, d_k, d_v, dropout=dropout)
for _ in range(n_layers)])
def forward(self, padded_input, input_lengths, return_attns=False):
"""
Args:
padded_input: N x T x D
input_lengths: N
Returns:
enc_output: N x T x H
"""
enc_slf_attn_list = []
# Prepare masks
non_pad_mask = get_non_pad_mask(padded_input, input_lengths=input_lengths)
length = padded_input.size(1)
slf_attn_mask = get_attn_pad_mask(padded_input, input_lengths, length)
# Forward
enc_output = self.dropout(
self.layer_norm_in(self.linear_in(padded_input)) +
self.positional_encoding(padded_input))
for enc_layer in self.layer_stack:
enc_output, enc_slf_attn = enc_layer(
enc_output,
non_pad_mask=non_pad_mask,
slf_attn_mask=slf_attn_mask)
if return_attns:
enc_slf_attn_list += [enc_slf_attn]
if return_attns:
return enc_output, enc_slf_attn_list
return enc_output,
class EncoderLayer(nn.Module):
"""Compose with two sub-layers.
1. A multi-head self-attention mechanism
2. A simple, position-wise fully connected feed-forward network.
"""
def __init__(self, d_model, d_inner, n_head, d_k, d_v, dropout=0.1):
super(EncoderLayer, self).__init__()
self.slf_attn = MultiHeadAttention(
n_head, d_model, d_k, d_v, dropout=dropout)
self.pos_ffn = PositionwiseFeedForward(
d_model, d_inner, dropout=dropout)
def forward(self, enc_input, non_pad_mask=None, slf_attn_mask=None):
enc_output, enc_slf_attn = self.slf_attn(
enc_input, enc_input, enc_input, mask=slf_attn_mask)
enc_output *= non_pad_mask
enc_output = self.pos_ffn(enc_output)
enc_output *= non_pad_mask
return enc_output, enc_slf_attn
|
import torch
import torch.nn.functional as F
from ..utils import IGNORE_ID
def cal_performance(pred, gold, smoothing=0.0):
"""Calculate cross entropy loss, apply label smoothing if needed.
Args:
pred: N x T x C, score before softmax
gold: N x T
"""
pred = pred.view(-1, pred.size(2))
gold = gold.contiguous().view(-1)
loss = cal_loss(pred, gold, smoothing)
pred = pred.max(1)[1]
non_pad_mask = gold.ne(IGNORE_ID)
n_correct = pred.eq(gold)
n_correct = n_correct.masked_select(non_pad_mask).sum().item()
return loss, n_correct
def cal_loss(pred, gold, smoothing=0.0):
"""Calculate cross entropy loss, apply label smoothing if needed.
"""
if smoothing > 0.0:
eps = smoothing
n_class = pred.size(1)
# Generate one-hot matrix: N x C.
# Only label position is 1 and all other positions are 0
# gold include -1 value (IGNORE_ID) and this will lead to assert error
gold_for_scatter = gold.ne(IGNORE_ID).long() * gold
one_hot = torch.zeros_like(pred).scatter(1, gold_for_scatter.view(-1, 1), 1)
one_hot = one_hot * (1 - eps) + (1 - one_hot) * eps / n_class
log_prb = F.log_softmax(pred, dim=1)
non_pad_mask = gold.ne(IGNORE_ID)
n_word = non_pad_mask.sum().item()
loss = -(one_hot * log_prb).sum(dim=1)
loss = loss.masked_select(non_pad_mask).sum() / n_word
else:
loss = F.cross_entropy(pred, gold,
ignore_index=IGNORE_ID,
reduction='elementwise_mean')
return loss
|
import torch
import torch.nn as nn
from .decoder import Decoder
from .encoder import Encoder
class Transformer(nn.Module):
"""An encoder-decoder framework only includes attention.
"""
def __init__(self, encoder, decoder):
super(Transformer, self).__init__()
self.encoder = encoder
self.decoder = decoder
for p in self.parameters():
if p.dim() > 1:
nn.init.xavier_uniform_(p)
def forward(self, padded_input, input_lengths, padded_target):
"""
Args:
padded_input: N x Ti x D
input_lengths: N
padded_targets: N x To
"""
encoder_padded_outputs, *_ = self.encoder(padded_input, input_lengths)
# pred is score before softmax
pred, gold, *_ = self.decoder(padded_target, encoder_padded_outputs,
input_lengths)
return pred, gold
def recognize(self, input, input_length, char_list, args):
"""Sequence-to-Sequence beam search, decode one utterence now.
Args:
input: T x D
char_list: list of characters
args: args.beam
Returns:
nbest_hyps:
"""
encoder_outputs, *_ = self.encoder(input.unsqueeze(0), input_length)
nbest_hyps = self.decoder.recognize_beam(encoder_outputs[0],
char_list,
args)
return nbest_hyps
@classmethod
def load_model(cls, path):
# Load to CPU
package = torch.load(path, map_location=lambda storage, loc: storage)
model, LFR_m, LFR_n = cls.load_model_from_package(package)
return model, LFR_m, LFR_n
@classmethod
def load_model_from_package(cls, package):
encoder = Encoder(package['d_input'],
package['n_layers_enc'],
package['n_head'],
package['d_k'],
package['d_v'],
package['d_model'],
package['d_inner'],
dropout=package['dropout'],
pe_maxlen=package['pe_maxlen'])
decoder = Decoder(package['sos_id'],
package['eos_id'],
package['vocab_size'],
package['d_word_vec'],
package['n_layers_dec'],
package['n_head'],
package['d_k'],
package['d_v'],
package['d_model'],
package['d_inner'],
dropout=package['dropout'],
tgt_emb_prj_weight_sharing=package['tgt_emb_prj_weight_sharing'],
pe_maxlen=package['pe_maxlen'],
)
model = cls(encoder, decoder)
model.load_state_dict(package['state_dict'])
LFR_m, LFR_n = package['LFR_m'], package['LFR_n']
return model, LFR_m, LFR_n
@staticmethod
def serialize(model, optimizer, epoch, LFR_m, LFR_n, tr_loss=None, cv_loss=None):
package = {
# Low Frame Rate Feature
'LFR_m': LFR_m,
'LFR_n': LFR_n,
# encoder
'd_input': model.encoder.d_input,
'n_layers_enc': model.encoder.n_layers,
'n_head': model.encoder.n_head,
'd_k': model.encoder.d_k,
'd_v': model.encoder.d_v,
'd_model': model.encoder.d_model,
'd_inner': model.encoder.d_inner,
'dropout': model.encoder.dropout_rate,
'pe_maxlen': model.encoder.pe_maxlen,
# decoder
'sos_id': model.decoder.sos_id,
'eos_id': model.decoder.eos_id,
'vocab_size': model.decoder.n_tgt_vocab,
'd_word_vec': model.decoder.d_word_vec,
'n_layers_dec': model.decoder.n_layers,
'tgt_emb_prj_weight_sharing': model.decoder.tgt_emb_prj_weight_sharing,
# state
'state_dict': model.state_dict(),
'optim_dict': optimizer.state_dict(),
'epoch': epoch
}
if tr_loss is not None:
package['tr_loss'] = tr_loss
package['cv_loss'] = cv_loss
return package
|
"""A wrapper class for optimizer"""
import torch
class TransformerOptimizer:
"""A simple wrapper class for learning rate scheduling"""
def __init__(self, optimizer, k, d_model, warmup_steps=4000):
self.optimizer = optimizer
self.k = k
self.init_lr = d_model ** (-0.5)
self.warmup_steps = warmup_steps
self.step_num = 0
self.visdom_lr = None
def zero_grad(self):
self.optimizer.zero_grad()
def step(self):
self._update_lr()
self._visdom()
self.optimizer.step()
def _update_lr(self):
self.step_num += 1
lr = self.k * self.init_lr * min(self.step_num ** (-0.5),
self.step_num * (self.warmup_steps ** (-1.5)))
for param_group in self.optimizer.param_groups:
param_group['lr'] = lr
def load_state_dict(self, state_dict):
self.optimizer.load_state_dict(state_dict)
def state_dict(self):
return self.optimizer.state_dict()
def set_k(self, k):
self.k = k
def set_visdom(self, visdom_lr, vis):
self.visdom_lr = visdom_lr # Turn on/off visdom of learning rate
self.vis = vis # visdom enviroment
self.vis_opts = dict(title='Learning Rate',
ylabel='Leanring Rate', xlabel='step')
self.vis_window = None
self.x_axis = torch.LongTensor()
self.y_axis = torch.FloatTensor()
def _visdom(self):
if self.visdom_lr is not None:
self.x_axis = torch.cat(
[self.x_axis, torch.LongTensor([self.step_num])])
self.y_axis = torch.cat(
[self.y_axis, torch.FloatTensor([self.optimizer.param_groups[0]['lr']])])
if self.vis_window is None:
self.vis_window = self.vis.line(X=self.x_axis, Y=self.y_axis,
opts=self.vis_opts)
else:
self.vis.line(X=self.x_axis, Y=self.y_axis, win=self.vis_window,
update='replace')
|
import math
import torch
import torch.nn as nn
import torch.nn.functional as F
class PositionalEncoding(nn.Module):
"""Implement the positional encoding (PE) function.
PE(pos, 2i) = sin(pos/(10000^(2i/dmodel)))
PE(pos, 2i+1) = cos(pos/(10000^(2i/dmodel)))
"""
def __init__(self, d_model, max_len=5000):
super(PositionalEncoding, self).__init__()
# Compute the positional encodings once in log space.
pe = torch.zeros(max_len, d_model, requires_grad=False)
position = torch.arange(0, max_len).unsqueeze(1).float()
div_term = torch.exp(torch.arange(0, d_model, 2).float() *
-(math.log(10000.0) / d_model))
pe[:, 0::2] = torch.sin(position * div_term)
pe[:, 1::2] = torch.cos(position * div_term)
pe = pe.unsqueeze(0)
self.register_buffer('pe', pe)
def forward(self, input):
"""
Args:
input: N x T x D
"""
length = input.size(1)
return self.pe[:, :length]
class PositionwiseFeedForward(nn.Module):
"""Implements position-wise feedforward sublayer.
FFN(x) = max(0, xW1 + b1)W2 + b2
"""
def __init__(self, d_model, d_ff, dropout=0.1):
super(PositionwiseFeedForward, self).__init__()
self.w_1 = nn.Linear(d_model, d_ff)
self.w_2 = nn.Linear(d_ff, d_model)
self.dropout = nn.Dropout(dropout)
self.layer_norm = nn.LayerNorm(d_model)
def forward(self, x):
residual = x
output = self.w_2(F.relu(self.w_1(x)))
output = self.dropout(output)
output = self.layer_norm(output + residual)
return output
# Another implementation
class PositionwiseFeedForwardUseConv(nn.Module):
"""A two-feed-forward-layer module"""
def __init__(self, d_in, d_hid, dropout=0.1):
super(PositionwiseFeedForwardUseConv, self).__init__()
self.w_1 = nn.Conv1d(d_in, d_hid, 1) # position-wise
self.w_2 = nn.Conv1d(d_hid, d_in, 1) # position-wise
self.layer_norm = nn.LayerNorm(d_in)
self.dropout = nn.Dropout(dropout)
def forward(self, x):
residual = x
output = x.transpose(1, 2)
output = self.w_2(F.relu(self.w_1(output)))
output = output.transpose(1, 2)
output = self.dropout(output)
output = self.layer_norm(output + residual)
return output
|
#!/usr/bin/env python
# encoding: utf-8
# Copyright 2017 Johns Hopkins University (Shinji Watanabe)
# Apache 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
import json
import argparse
import logging
from utils import process_dict
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('json', type=str, help='json files')
parser.add_argument('dict', type=str, help='dict')
parser.add_argument('ref', type=str, help='ref')
parser.add_argument('hyp', type=str, help='hyp')
args = parser.parse_args()
# logging info
logging.basicConfig(
level=logging.INFO, format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s")
logging.info("reading %s", args.json)
with open(args.json, 'r') as f:
j = json.load(f)
logging.info("reading %s", args.dict)
char_list, sos_id, eos_id = process_dict(args.dict)
# with open(args.dict, 'r') as f:
# dictionary = f.readlines()
# char_list = [unicode(entry.split(' ')[0], 'utf_8') for entry in dictionary]
# char_list.insert(0, '<blank>')
# char_list.append('<eos>')
# print([x.encode('utf-8') for x in char_list])
logging.info("writing hyp trn to %s", args.hyp)
logging.info("writing ref trn to %s", args.ref)
h = open(args.hyp, 'w')
r = open(args.ref, 'w')
for x in j['utts']:
seq = [char_list[int(i)] for i in j['utts'][x]
['output'][0]['rec_tokenid'].split()]
h.write(" ".join(seq).replace('<eos>', '')),
h.write(
" (" + j['utts'][x]['utt2spk'].replace('-', '_') + "-" + x + ")\n")
seq = [char_list[int(i)] for i in j['utts'][x]
['output'][0]['tokenid'].split()]
r.write(" ".join(seq).replace('<eos>', '')),
r.write(
" (" + j['utts'][x]['utt2spk'].replace('-', '_') + "-" + x + ")\n")
|
#!/usr/bin/env python2
# encoding: utf-8
# Copyright 2017 Johns Hopkins University (Shinji Watanabe)
# Apache 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
import sys
import json
import argparse
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--key', '-k', type=str,
help='key')
args = parser.parse_args()
l = {}
line = sys.stdin.readline()
while line:
x = unicode(line, 'utf_8').rstrip().split()
v = {args.key: ' '.join(x[1:]).encode('utf_8')}
l[x[0].encode('utf_8')] = v
line = sys.stdin.readline()
all_l = {'utts': l}
# ensure "ensure_ascii=False", which is a bug
jsonstring = json.dumps(all_l, indent=4, ensure_ascii=False)
print(jsonstring)
|
#!/usr/bin/env python
# Apache 2.0
import sys
import argparse
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--exclude', '-v', dest='exclude',
action='store_true', help='exclude filter words')
parser.add_argument('filt', type=str, help='filter list')
parser.add_argument('infile', type=str, help='input file')
args = parser.parse_args()
vocab = set()
with open(args.filt) as vocabfile:
for line in vocabfile:
vocab.add(line.strip())
with open(args.infile) as textfile:
for line in textfile:
if args.exclude:
print(" ".join(
map(lambda word: word if not word in vocab else '', line.strip().split())))
# else:
# print(" ".join(map(lambda word: word if word in vocab else '<UNK>', unicode(line, 'utf_8').strip().split())).encode('utf_8'))
|
#!/usr/bin/env python2
# encoding: utf-8
# Copyright 2017 Johns Hopkins University (Shinji Watanabe)
# Apache 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
import argparse
import json
import logging
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('jsons', type=str, nargs='+',
help='json files')
parser.add_argument('--multi', '-m', type=int,
help='Test the json file for multiple input/output', default=0)
parser.add_argument('--verbose', '-V', default=0, type=int,
help='Verbose option')
args = parser.parse_args()
# logging info
if args.verbose > 0:
logging.basicConfig(
level=logging.INFO, format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s")
else:
logging.basicConfig(
level=logging.WARN, format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s")
# make intersection set for utterance keys
js = []
intersec_ks = []
for x in args.jsons:
with open(x, 'r') as f:
j = json.load(f)
ks = j['utts'].keys()
logging.info(x + ': has ' + str(len(ks)) + ' utterances')
if len(intersec_ks) > 0:
intersec_ks = intersec_ks.intersection(set(ks))
else:
intersec_ks = set(ks)
js.append(j)
logging.info('new json has ' + str(len(intersec_ks)) + ' utterances')
old_dic = dict()
for k in intersec_ks:
v = js[0]['utts'][k]
for j in js[1:]:
v.update(j['utts'][k])
old_dic[k] = v
new_dic = dict()
for id in old_dic:
dic = old_dic[id]
in_dic = {}
if dic.has_key(unicode('idim', 'utf-8')):
in_dic[unicode('shape', 'utf-8')] = (int(dic[unicode('ilen', 'utf-8')]), int(dic[unicode('idim', 'utf-8')]))
in_dic[unicode('name', 'utf-8')] = unicode('input1', 'utf-8')
in_dic[unicode('feat', 'utf-8')] = dic[unicode('feat', 'utf-8')]
out_dic = {}
out_dic[unicode('name', 'utf-8')] = unicode('target1', 'utf-8')
out_dic[unicode('shape', 'utf-8')] = (int(dic[unicode('olen', 'utf-8')]), int(dic[unicode('odim', 'utf-8')]))
out_dic[unicode('text', 'utf-8')] = dic[unicode('text', 'utf-8')]
out_dic[unicode('token', 'utf-8')] = dic[unicode('token', 'utf-8')]
out_dic[unicode('tokenid', 'utf-8')] = dic[unicode('tokenid', 'utf-8')]
new_dic[id] = {unicode('input', 'utf-8'):[in_dic], unicode('output', 'utf-8'):[out_dic],
unicode('utt2spk', 'utf-8'):dic[unicode('utt2spk', 'utf-8')]}
# ensure "ensure_ascii=False", which is a bug
jsonstring = json.dumps({'utts': new_dic}, indent=4, ensure_ascii=False, sort_keys=True).encode('utf_8')
print(jsonstring)
|
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