Commit Graph

2 Commits

Author SHA1 Message Date
Jeff Bolz
2f5a4e1e09 vulkan: move common FA code to flash_attn_base.comp (#13556)
* vulkan: move common FA code to flash_attn_base.comp

* vulkan: move common FA index/stride setup code to flash_attn_base.comp

* build fix
2025-05-17 09:14:55 +02:00
Jeff Bolz
24e86cae72 vulkan: KHR_coopmat flash attention (#13506)
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.
2025-05-14 11:55:26 +02:00