Jeff Huang 1fe3c20ef2 [CK_TILE] fmha: Unify sequence length and padding handling ...

Refactor the handling of sequence lengths and padding in the
FMHA forward and backward kernels to provide a more unified and flexible
interface.

- Replaced `seqstart_padded_*_ptr` with a more robust system that uses
  `seqstart_*_ptr` for physical sequence lengths and introduces
  `seqlen_*_ptr` and `cu_seqlen_*_ptr` for logical (unpadded) lengths.
- Established a clear order of precedence for determining sequence
  length: cumulative lengths (`cu_seqlen_*_ptr`) take priority,
  followed by per-sequence lengths (`seqlen_*_ptr`), and finally
  physical lengths derived from `seqstart_*_ptr`.
- Clarified the distinction between "group mode" and "batch mode" and
  how sequence lengths are handled in each case.
- Renamed `cu_seqlen_kv_ptr` to `cu_seqlen_k_ptr` for consistency.
- Updated comments and documentation to reflect the new argument
  structure and usage.

2025-10-25 18:10:02 +08:00

..

ck

[CK][host] limit the rotating count to prevent oom (#3089)

2025-10-24 08:55:54 -07:00

ck_tile

[CK_TILE] fmha: Unify sequence length and padding handling

2025-10-25 18:10:02 +08:00

rapidjson

Update pre-commit to fixed versions, run remod for ck_tile (#2895)

2025-10-16 15:29:17 -07:00