fa4-v4.0.0.beta11

What's Changed

• Feat([FA4][CUTE DSL]) Add head_dim=256 support (forward + backward) by @wangsiyu in #2412
• [Cute,hd256] Post-merge cleanup: dead code, duplicate imports by @Johnsonms in #2487
• [CuTe,Flex] Wire up interface for flex autograd support by @reubenconducts in #2485
• [CuTe,Flex] Add score_mod_bwd param to flash_attn_varlen_func by @reubenconducts in #2496
• fix: typos and missing comments in FA4 cute kernel files by @dxasu in #2502
• [SM100] Guard gO None in empty-tile correction by @geruome in #2504
• [CuTe, Flex] simplify blocksparse interface in flash_attn_func by @reubenconducts in #2506
• Fix: pass stream to SM100 MLA kernel by @MatthewBonanni in #2505
• Fix clc scheduling request bug by @drisspg in #2508
• [Tests,MLA] Close coverage gaps in test_flash_attn_mla_absorbed by @Johnsonms in #2483
• Add cache utils logging test by @drisspg in #2509
• [hd256] Improve forward kernel with exp2 FMA emulation (3% to 9% performance gain) by @Johnsonms in #2488
• SM90 FA4 QuACK 0.4 Compatibility by @EduardDurech in #2513
• ci: use /tmp for apptainer tmpdir to fix xattrerror on VAST by @Johnsonms in #2511

New Contributors

• @wangsiyu made their first contribution in #2412
• @dxasu made their first contribution in #2502
• @EduardDurech made their first contribution in #2513

Full Changelog: fa4-v4.0.0.beta10...fa4-v4.0.0.beta11