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docs(moe): document MLXCEL_FUSED_MOE flags and per-model gains (#268) - #283
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…ollow-up (#268) Add a usage/flags section to the fused decode-MoE design doc: the MLXCEL_FUSED_MOE / MLXCEL_FUSED_MOE_SGY / MLXCEL_FUSED_MOE_RELU2 env vars, the measured per-model decode gains on M1 Ultra (gemma4 +13%, qwen3.5 +8.7%, dots +4.7%, qwen3-30b +3.5%, nemotron ~0%), the f16-jitter-class parity caveat, and the list of covered models. Mark roadmap steps 3-4 done (#278/#279/#280/#281) and add step 5: validate on M5, then decide on flipping the flag default-on.
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Summary
Documents the fused decode-MoE feature now that steps 2b-3b are merged (#276, #278, #279, #280, #281). Adds a Usage and flags section to
docs/benchmark_results/fused-moe-decode-kernel-design.md:MLXCEL_FUSED_MOE(enable),MLXCEL_FUSED_MOE_SGY(simdgroups/threadgroup),MLXCEL_FUSED_MOE_RELU2(squared-ReLU path).Roadmap updated: steps 3-4 marked done; step 5 added (validate on M5, then decide on default-on, tracked in #282).
Docs only, no behavior change.
Refs #268, #282.