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block sparse attention in flash attention v2.0 #506

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daquexian opened this issue Aug 31, 2023 · 0 comments
Open

block sparse attention in flash attention v2.0 #506

daquexian opened this issue Aug 31, 2023 · 0 comments

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@daquexian
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Thanks for your great work!

It seems that block sparse attention fails to work after v2.0. It relies on flash_attn_cuda.fwd_block, while flash_attn_cuda has been renamed to flash_attn_2_cuda and has no fwd_block method in it.

Is there any plan to support block sparse attention in v2.0? I can also submit a pull request if I have some direction :)
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@daquexian