r/LocalLLaMA
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Exploring FlashAttention-3/4 optimizations on RTX GPUs
I was curious whether any of the FA-3/4 optimizations transfer to RTX GPUs. vLLM/SGLang attention falls back to FA-2 on consumer cards (FA-3 and FA-4 are datacenter-only), so I wanted to know if there's any performance left on the table, and I rebuilt the attention kernels from scratch. The kernel reaches parity with F