mirror of
https://github.com/hpcaitech/ColossalAI.git
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c068ef0fa0
* [zero] support all-gather overlap * [zero] add overlap all-gather flag * [misc] fix typo * [zero] update api
34 lines
800 B
Python
34 lines
800 B
Python
from typing import List
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from torch._tensor import Tensor
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from colossalai.tensor.param_op_hook import ColoParamOpHook
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_ALL_GATHER_HANDLE = "_all_gather_handle"
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def wait_all_gather_handle(p):
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if hasattr(p, _ALL_GATHER_HANDLE):
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handle = getattr(p, _ALL_GATHER_HANDLE)
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handle.wait()
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delattr(p, _ALL_GATHER_HANDLE)
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def set_all_gather_handle(p, handle):
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setattr(p, _ALL_GATHER_HANDLE, handle)
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class ZeroOpHook(ColoParamOpHook):
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def pre_forward(self, params: List[Tensor]) -> None:
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for p in params:
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wait_all_gather_handle(p)
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def post_forward(self, params: List[Tensor]) -> None:
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pass
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def pre_backward(self, params: List[Tensor]) -> None:
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pass
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def post_backward(self, params: List[Tensor]) -> None:
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pass
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