8000 vulkan: KHR_coopmat flash attention by jeffbolznv · Pull Request #13506 · ggml-org/llama.cpp · GitHub
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vulkan: KHR_coopmat flash attention #13506

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May 14, 2025
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vulkan: KHR_coopmat flash attention #13506

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vulkan: KHR_coopmat flash attention 
This shader uses coopmat1 to do the Q*K^T multiply. The P*V multiply is more
difficult for various reasons so I haven't done it. Performance for this
shader is around 2.5x better than for the scalar shader when doing prompt
processing. Some of the benefit may be from other optimizations like staging
through shared memory, or splitting by rows.
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@jeffbolznv
jeffbolznv committed May 14, 2025
commit 1a109e6dc2c0b33f8cf2c55d0a64d8733e523074
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