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[Eager] Avoid redundant memcpy in `to_tensor` by SigureMo · Pull Request #68164 · PaddlePaddle/Paddle · GitHub
[Eager] Avoid redundant memcpy in
[Eager] Avoid redundant memcpy in
SigureMo
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[Eager] Avoid redundancy memcpy in
[Eager] Avoid redundant memcpy in Sep 11, 2024
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[Eager] Avoid redundant memcpy in to_tensor
#68164
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Merged
SigureMo
merged 5 commits into
PaddlePaddle:develop
from
cattidea:eager/avoid-memcpy-in-to-tensor
Sep 12, 2024
Merged
[Eager] Avoid redundant memcpy in to_tensor
#68164
SigureMo
merged 5 commits into
PaddlePaddle:develop
from
cattidea:eager/avoid-memcpy-in-to-tensor
Sep 12, 2024
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你的PR提交成功,感谢你对开源项目的贡献! |
已添加~ |
to_tensor
to_tensor
HydrogenSulfate
approved these changes
Sep 12, 2024
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LGTM
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PR Category
Execute Infrastructure
PR Types
Bug fixes
Description
目前
to_tensor
传入 DenseTensor 时,因为paddle.Tensor
没有传入 place,会导致先 copy 到 expected place,然后后面因为 place 和需要的不一致再次发生 copy就比如,默认 device 为 GPU 时,对于 CPU Tensor
x
,首先会 H2D,然后 copy 时候 D2H,两次 memcpy修复后不再发生 memcpy
顺带清理等价类
paddle.Tensor
、paddle.base.core.eager.Tensor
和paddle.base.core.Tensor
、paddle.base.core.LoDTensor
相关分支Note
仅针对
to_tensor
传入 DenseTensor 的情况,传入 EagerTensor 仍然需要 copycc @HydrogenSulfate
Pcard-67164