TMEM round-trip via Ld32x32bOp/St32x32bOp corrupts O accumulator data
even with CUTLASS correction_rescale pattern. All variants tested:
- Repetition(16) + composition (CUTLASS exact pattern) — BROKEN
- Repetition(32) + composition — BROKEN
- Repetition(16) raw layout (no composition) — BROKEN
Even NO-OP (multiply by 1.0) produces catastrophically wrong results.
Production path remains Python KV merge (cos 0.999998 for s_k up to 1024).
Next: SMEM accumulator approach (one-way TMEM→REGS→SMEM per kt).
biondizzle
afb93eae22