---
id: pr-flashinfer-2966
repo: flashinfer-ai/flashinfer
pr: 2966
title: Fused moe all-reduce routed scaling factor + quant support
author: murphymatt
date: '2026-04-13'
url: https://github.com/flashinfer-ai/flashinfer/pull/2966
source_category: upstream-code
architectures:
- sm100
tags:
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: a2d2b25a8c69ff2385e03da04b598aba99b53abf
inclusion_reason: kernel file changes
changed_paths:
- csrc/trtllm_moe_allreduce_fusion.cu
- flashinfer/comm/trtllm_ar.py
- include/flashinfer/comm/trtllm_moe_allreduce_fusion.cuh
- tests/comm/test_trtllm_moe_allreduce_fusion_finalize.py
head_ref_oid: a1450e4fd3e26dd356b2a2a3bf909f232eee90ac
artifact_dir: evidence/pull-bundles/flashinfer/gh-2966
---
# Fused moe all-reduce routed scaling factor + quant support

- Repository: `flashinfer-ai/flashinfer`
- PR: [2966](https://github.com/flashinfer-ai/flashinfer/pull/2966)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/trtllm_moe_allreduce_fusion.cu`
- `flashinfer/comm/trtllm_ar.py`
- `include/flashinfer/comm/trtllm_moe_allreduce_fusion.cuh`
- `tests/comm/test_trtllm_moe_allreduce_fusion_finalize.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2966`
