---
id: pr-vllm-38136
repo: vllm-project/vllm
pr: 38136
title: Fix multi-node allreduce fusion
author: wzhao18
date: '2026-03-26'
url: https://github.com/vllm-project/vllm/pull/38136
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 0904b6550d8e2d11295762fabf3f0d7972bd0300
inclusion_reason: include
changed_paths:
- vllm/distributed/device_communicators/flashinfer_all_reduce.py
- vllm/envs.py
artifact_dir: evidence/pull-bundles/vllm/gh-38136
head_ref_oid: 625c233c248523b62889a8e85fc7cb1d42086f78
---
# Fix multi-node allreduce fusion

- Repository: `vllm-project/vllm`
- PR: [38136](https://github.com/vllm-project/vllm/pull/38136)
- Decision: `include`
- Reason: include

## Changed Paths

- `vllm/distributed/device_communicators/flashinfer_all_reduce.py`
- `vllm/envs.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-38136`
