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# Copyright (c) Microsoft Corporation.
# SPDX-License-Identifier: Apache-2.0
# DeepSpeed Team
from deepspeed.runtime.config_utils import get_scalar_param, DeepSpeedConfigObject
#########################################
# DeepSpeed Activation Checkpointing
#########################################
# Activation Checkpointing Allows to save memory by only keeping a select few
#activations for the backpropagation.
ACTIVATION_CHKPT_FORMAT = '''
Activation Checkpointing should be configured as:
"session_params": {
"activation_checkpointing": {
"partitioned_activations": [true|false],
"number_checkpoints": 100,
"contiguous_memory_optimization": [true|false],
"cpu_checkpointing": [true|false],
"profile": [true|false],
"synchronize_checkpoint_boundary": [true|false],
}
}
'''
ACT_CHKPT_PARTITION_ACTIVATIONS = 'partition_activations'
ACT_CHKPT_PARTITION_ACTIVATIONS_DEFAULT = False
ACT_CHKPT_NUMBER_CHECKPOINTS = 'number_checkpoints'
ACT_CHKPT_NUMBER_CHECKPOINTS_DEFAULT = None
ACT_CHKPT_CONTIGUOUS_MEMORY_OPTIMIZATION = 'contiguous_memory_optimization'
ACT_CHKPT_CONTIGUOUS_MEMORY_OPTIMIZATION_DEFAULT = False
ACT_CHKPT_SYNCHRONIZE_CHECKPOINT_BOUNDARY = 'synchronize_checkpoint_boundary'
ACT_CHKPT_SYNCHRONIZE_CHECKPOINT_BOUNDARY_DEFAULT = False
ACT_CHKPT_PROFILE = 'profile'
ACT_CHKPT_PROFILE_DEFAULT = False
ACT_CHKPT_CPU_CHECKPOINTING = 'cpu_checkpointing'
ACT_CHKPT_CPU_CHECKPOINTING_DEFAULT = False
ACT_CHKPT = 'activation_checkpointing'
ACT_CHKPT_DEFAULT = {
ACT_CHKPT_PARTITION_ACTIVATIONS: ACT_CHKPT_PARTITION_ACTIVATIONS_DEFAULT,
ACT_CHKPT_NUMBER_CHECKPOINTS: ACT_CHKPT_NUMBER_CHECKPOINTS_DEFAULT,
ACT_CHKPT_CONTIGUOUS_MEMORY_OPTIMIZATION: ACT_CHKPT_CONTIGUOUS_MEMORY_OPTIMIZATION_DEFAULT,
ACT_CHKPT_SYNCHRONIZE_CHECKPOINT_BOUNDARY: ACT_CHKPT_SYNCHRONIZE_CHECKPOINT_BOUNDARY_DEFAULT,
ACT_CHKPT_PROFILE: ACT_CHKPT_PROFILE_DEFAULT,
ACT_CHKPT_CPU_CHECKPOINTING: ACT_CHKPT_CPU_CHECKPOINTING_DEFAULT
}
class DeepSpeedActivationCheckpointingConfig(DeepSpeedConfigObject):
def __init__(self, param_dict):
super(DeepSpeedActivationCheckpointingConfig, self).__init__()
self.partition_activations = None
self.contiguous_memory_optimization = None
self.cpu_checkpointing = None
self.number_checkpoints = None
self.synchronize_checkpoint_boundary = None
self.profile = None
if ACT_CHKPT in param_dict.keys():
act_chkpt_config_dict = param_dict[ACT_CHKPT]
else:
act_chkpt_config_dict = ACT_CHKPT_DEFAULT
self._initialize(act_chkpt_config_dict)
def _initialize(self, act_chkpt_config_dict):
self.partition_activations = get_scalar_param(act_chkpt_config_dict, ACT_CHKPT_PARTITION_ACTIVATIONS,
ACT_CHKPT_PARTITION_ACTIVATIONS_DEFAULT)
self.contiguous_memory_optimization = get_scalar_param(act_chkpt_config_dict,
ACT_CHKPT_CONTIGUOUS_MEMORY_OPTIMIZATION,
ACT_CHKPT_CONTIGUOUS_MEMORY_OPTIMIZATION_DEFAULT)
self.cpu_checkpointing = get_scalar_param(act_chkpt_config_dict, ACT_CHKPT_CPU_CHECKPOINTING,
ACT_CHKPT_CPU_CHECKPOINTING_DEFAULT)
self.number_checkpoints = get_scalar_param(act_chkpt_config_dict, ACT_CHKPT_NUMBER_CHECKPOINTS,
ACT_CHKPT_NUMBER_CHECKPOINTS_DEFAULT)
self.profile = get_scalar_param(act_chkpt_config_dict, ACT_CHKPT_PROFILE, ACT_CHKPT_PROFILE_DEFAULT)
self.synchronize_checkpoint_boundary = get_scalar_param(act_chkpt_config_dict,
ACT_CHKPT_SYNCHRONIZE_CHECKPOINT_BOUNDARY,
ACT_CHKPT_SYNCHRONIZE_CHECKPOINT_BOUNDARY_DEFAULT)
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