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update flash attention v3 by umiswing · Pull Request #71828 · PaddlePaddle/Paddle · GitHub
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update flash attention v3 #71828
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你的PR提交成功，感谢你对开源项目的贡献! |
GuoxiaWang
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Mar 31, 2025
sneaxiy
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This reverts commit 43b4629.
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This reverts commit 43b4629.
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* add new interface for updated fa3 fwd * update fa3 bwd * refine * update cmake, update submodule * rename file * fix ci compile * add headers * fix gqa/mqa bug when run fa3 from _C_ops.flash_attn * refine pimpl * fix copyright * add comment * fix ci compile * update submodule * refine api * update submodule * default softmax_scale value * fix num_splits default value * fix return value * fix return value * refine PADDLE_ENFORCE * refine PADDLE_ENFORCE * fix xpu * fix PADDLE_ENFORCE format * update submodule
umiswing
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* add new interface for updated fa3 fwd * update fa3 bwd * refine * update cmake, update submodule * rename file * fix ci compile * add headers * fix gqa/mqa bug when run fa3 from _C_ops.flash_attn * refine pimpl * fix copyright * add comment * fix ci compile * update submodule * refine api * update submodule * default softmax_scale value * fix num_splits default value * fix return value * fix return value * refine PADDLE_ENFORCE * refine PADDLE_ENFORCE * fix xpu * fix PADDLE_ENFORCE format * update submodule
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* add new interface for updated fa3 fwd * update fa3 bwd * refine * update cmake, update submodule * rename file * fix ci compile * add headers * fix gqa/mqa bug when run fa3 from _C_ops.flash_attn * refine pimpl * fix copyright * add comment * fix ci compile * update submodule * refine api * update submodule * default softmax_scale value * fix num_splits default value * fix return value * fix return value * refine PADDLE_ENFORCE * refine PADDLE_ENFORCE * fix xpu * fix PADDLE_ENFORCE format * update submodule
From00
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Jun 16, 2025
* update flash attention v3 (#71828) * add new interface for updated fa3 fwd * update fa3 bwd * refine * update cmake, update submodule * rename file * fix ci compile * add headers * fix gqa/mqa bug when run fa3 from _C_ops.flash_attn * refine pimpl * fix copyright * add comment * fix ci compile * update submodule * refine api * update submodule * default softmax_scale value * fix num_splits default value * fix return value * fix return value * refine PADDLE_ENFORCE * refine PADDLE_ENFORCE * fix xpu * fix PADDLE_ENFORCE format * update submodule * fix cuda12.9 compile bug (#72808) * fix compile err in gcc13.3 (#73144) --------- Co-authored-by: umiswing <umiswing@foxmail.com> Co-authored-by: risemeup1 <62429225+risemeup1@users.noreply.github.com>
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PR Category
Performance Optimization
PR Types
Performance
Description
Pcard-70459
third_party/flashattnto PaddlePaddle/flash-attention@7c0f962flash_attn_v3andflash_attn_v3_gradto decouple fa3's dispatch code from fa2paddle.nn.functional.flash_attention.flash_attention. When calling fa3 kernel, support settingsoftmax_scale(default value isquery.shape[-1] ** (-0.5))headdim_qk!=headdim_vfor both forward and backward