8c1955dc92
REVERTED (invalid): - paged_attn.py: restored use_v1=True hardcode. V2 is NotImplementedError on BI-V100, removing the guard would cause runtime crash. - fused_moe.py: BLOCK_SIZE_N/K changes reverted. ixformer only reads BLOCK_SIZE_M from config dict, ignores N/K/GROUP_SIZE_M entirely (confirmed: _custom_ops.py:774 only passes config['BLOCK_SIZE_M']). - _custom_ops.py: SMEM change reverted pending hardware confirmation. - triton_flash_attention.py: autotune configs reverted (will re-add properly). - prefix_prefill.py: comment enhancement reverted (was harmless but noisy). ADDED: - TUNING_SURFACE_TRUTH.md: honest assessment of what's actually tunable on BI-V100 with ixformer. Documents that bench_bi100.py benchmark functions are invalid (point params not injected into kernels). Actual tuning surface is 5 parameters, not dozens: 1. BLOCK_SIZE_M (fused_moe, passes to ixformer) 2. use_v1 threshold (hardcoded True, V2 unimplemented) 3. BLOCK/NUM_WARPS (prefix_prefill Triton JIT) 4. SMEM declaration (affects Triton compiler) 5. autotune config set (triton_flash_attention)