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SplitK for multiblock_gemm in cuBLASdx #192

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osayamenja opened this issue Jun 21, 2024 · 1 comment
Open

SplitK for multiblock_gemm in cuBLASdx #192

osayamenja opened this issue Jun 21, 2024 · 1 comment
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@osayamenja
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Hello!

I am currently learning CUTLASS and cuBLASdx and I have a question. multiblock_gemm.cu only allows K that fits in smem. I believe it can be extended to larger K following the splitK pattern here, but I am not quite sure how to implement this, I would appreciate suggestions!
@osayamenja
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Adding this from CUTLASS, where they mention using a semaphore across CTAs, I think this is the best approach. Let me know if you agree.

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@JanuszL @osayamenja