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Document the full optimization journey for moe_blockscale_2stage stage1/stage2: - Sequential block_acc reuse + vec4 FMA (CK-style) - Minimal loop-carried state (16 values vs 34) - Remove redundant scale validity cndmask (buffer OOB returns 0) - Split scale computation (blk*s_a + fma(tmp, s_w_bc, acc)) - Stage2 tile_n=256 Result: 0.18x CK → 1.33x CK (stage1 1.24x, stage2 1.49x) Made-with: Cursor
When n_per_wave <= ScaleBlockN (128), all ni within a wave share the same weight scale block. Load once and reuse instead of loading redundantly for each ni. stage1: 5682→5414us (1.30x CK), total: 9229→8934us (1.38x CK) Made-with: Cursor
Made-with: Cursor
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Add optimization 6 (scale_w dedup), failed attempts section, and update final numbers to reflect all optimizations. Made-with: Cursor
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