wehub-resource-sync
52 lines
2.4 KiB
Python
52 lines
2.4 KiB
Python
# Copyright (c) Microsoft Corporation.
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# SPDX-License-Identifier: Apache-2.0
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# DeepSpeed Team
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import types
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from deepspeed.utils import get_full_hp_param, get_full_hp_grad, get_hp_fragment_mapping
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from deepspeed.utils import set_full_hp_param, set_full_hp_grad
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def link_hp_params(lp_param_list, flat_hp_partition, gradient_dict, offload_gradient_dict, use_offload,
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param_group_index, partition_start, partition_size, dp_group):
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local_lp_param_and_offset = _init_lp_to_hp_mapping(lp_param_list, partition_start, partition_size, dp_group)
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for lp_param, lp_start in local_lp_param_and_offset:
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lp_param._hp_mapping = get_hp_fragment_mapping(lp_param, lp_start, flat_hp_partition, gradient_dict,
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offload_gradient_dict, use_offload, param_group_index,
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partition_start, partition_size)
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def lazy_init_hp_params_optimizer_state(lp_param_list, flat_hp_partition, optimizer_state):
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for lp in lp_param_list:
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if lp._hp_mapping is not None:
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lp._hp_mapping.set_optim_state_fragment(flat_hp_partition, optimizer_state[flat_hp_partition])
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def _init_lp_to_hp_mapping(lp_param_list, partition_start, partition_size, dp_group):
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current_offset = 0
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param_and_offset_list = []
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partition_end = partition_start + partition_size
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index_in_param_group = 0
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for i, lp_param in enumerate(lp_param_list):
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lp_param._hp_mapping = None
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lp_param._dp_group = dp_group
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lp_param.get_full_hp_param = types.MethodType(get_full_hp_param, lp_param)
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lp_param.get_full_hp_grad = types.MethodType(get_full_hp_grad, lp_param)
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lp_param.set_full_hp_param = types.MethodType(set_full_hp_param, lp_param)
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lp_param.set_full_hp_grad = types.MethodType(set_full_hp_grad, lp_param)
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# lp_param overlaps with partition if both are true
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# 1) current_offset < partition_end,
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# 2) current_offset + lp_param.numel() >= partition_start
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lp_param_end = current_offset + lp_param.numel()
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if current_offset < partition_end and lp_param_end > partition_start:
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param_and_offset_list.append((lp_param, current_offset))
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lp_param._index_in_param_group = index_in_param_group
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# Indices for params in this partition/GPU
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index_in_param_group += 1
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current_offset += lp_param.numel()
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return param_and_offset_list
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