david/flash-attention

镜像来自 https://github.com/Dao-AILab/flash-attention

作者	SHA1 備註	提交日期
Tri Dao	6e8b25e426 Refactor	3 月之前
Ying Zhang	db80387343 Add seqused_q in fwd / bwd and seqused_k in bwd.	4 月之前
Cameron Shinn	3cea2fb6ee Add ArchTag to pre/postprocess bwd kernels (#1180)	4 月之前
Tri Dao	bafe253042 [FA3] Bwd	5 月之前