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[Triton]Add gluon moe reduce#3970

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vinayak/moe_reduce_gluon
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[Triton]Add gluon moe reduce#3970
vgokhale wants to merge 3 commits into
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vinayak/moe_reduce_gluon

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@vgokhale vgokhale requested review from a team, azaidy, lburzawa and nsusanto June 27, 2026 18:49
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🏷️ CI Guide

Runs automatically on every PR:

  • ✅ Pre-checks (submodule verification, code formatting)
  • ✅ Aiter op tests (gfx942 + gfx950)
  • ✅ Triton tests on MI35X (only when aiter/ops/triton/** or related paths are changed)

Extended tests (opt-in via labels):

Label Tests
ci:triton-300x Run an additional Triton test job on MI300X in PRs; main branch always runs both MI35X and MI300X
ci:sglang SGLang integration tests: DeepSeek-R1-MXFP4 accuracy, Qwen 3.5 accuracy
ci:atom ATOM benchmark: DeepSeek-R1-0528, GPT-OSS-120B
ci:atom_full ATOM accuracy suite for PR and main models from ATOM models_accuracy.json
ci:vllm vLLM benchmark: GPT-OSS-120B, DeepSeek-R1-0528, Kimi-K2.5
ci:all All standard extended tests (excludes ci:atom_full)

Only add ci:atom_full for FlyDSL or Triton upgrades.
Add labels via the sidebar or gh pr edit 3970 --add-label <label>

vgokhale and others added 2 commits June 27, 2026 18:53
Drop the redundant _reduce_grouped_gluon None check (the kernel is always
available on gfx1250), gate the gluon path on is_tdm_avail() plus the plain
non-swiglu/reduction_n==1/contiguous combine, and assert the NPAD power-of-2
invariants in-kernel via gl.static_assert. Swiglu-fused (MoE1 split-k) and
reduction_n!=1 reductions still fall back to the Triton _reduce_grouped.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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