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Zero
Running
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Zero
File size: 2,814 Bytes
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"""
"""
from contextvars import ContextVar
from io import BytesIO
from typing import Any
from typing import cast
import torch
from torch._inductor.package.package import package_aoti
from torch.export.pt2_archive._package import AOTICompiledModel
from torch.export.pt2_archive._package_weights import TensorProperties
from torch.export.pt2_archive._package_weights import Weights
INDUCTOR_CONFIGS_OVERRIDES = {
'aot_inductor.package_constants_in_so': False,
'aot_inductor.package_constants_on_disk': True,
'aot_inductor.package': True,
}
class ZeroGPUCompiledModel:
def __init__(self, archive_file: torch.types.FileLike, weights: Weights, cuda: bool = False):
self.archive_file = archive_file
self.weights = weights
if cuda:
self.weights_to_cuda_()
self.compiled_model: ContextVar[AOTICompiledModel | None] = ContextVar('compiled_model', default=None)
def weights_to_cuda_(self):
for name in self.weights:
tensor, properties = self.weights.get_weight(name)
self.weights[name] = (tensor.to('cuda'), properties)
def __call__(self, *args, **kwargs):
if (compiled_model := self.compiled_model.get()) is None:
constants_map = {name: value[0] for name, value in self.weights.items()}
compiled_model = cast(AOTICompiledModel, torch._inductor.aoti_load_package(self.archive_file))
compiled_model.load_constants(constants_map, check_full_update=True, user_managed=True)
self.compiled_model.set(compiled_model)
return compiled_model(*args, **kwargs)
def __reduce__(self):
weight_dict: dict[str, tuple[torch.Tensor, TensorProperties]] = {}
for name in self.weights:
tensor, properties = self.weights.get_weight(name)
tensor_ = torch.empty_like(tensor, device='cpu').pin_memory()
weight_dict[name] = (tensor_.copy_(tensor).detach().share_memory_(), properties)
return ZeroGPUCompiledModel, (self.archive_file, Weights(weight_dict), True)
def aoti_compile(
exported_program: torch.export.ExportedProgram,
inductor_configs: dict[str, Any] | None = None,
):
inductor_configs = (inductor_configs or {}) | INDUCTOR_CONFIGS_OVERRIDES
gm = cast(torch.fx.GraphModule, exported_program.module())
assert exported_program.example_inputs is not None
args, kwargs = exported_program.example_inputs
artifacts = torch._inductor.aot_compile(gm, args, kwargs, options=inductor_configs)
archive_file = BytesIO()
files: list[str | Weights] = [file for file in artifacts if isinstance(file, str)]
package_aoti(archive_file, files)
weights, = (artifact for artifact in artifacts if isinstance(artifact, Weights))
return ZeroGPUCompiledModel(archive_file, weights)
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