---
id: pr-flashinfer-994
repo: flashinfer-ai/flashinfer
pr: 994
title: 'feat: SM-constraint Communication Kernels'
author: yyihuang
date: '2025-04-18'
url: https://github.com/flashinfer-ai/flashinfer/pull/994
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
techniques: []
hardware_features: []
kernel_types:
- gemm
languages:
- cuda-cpp
captured_at: '2026-04-17'
status: merged
merge_sha: 83d1c745c1e012c884403e2c9f7b36d1c79a3754
inclusion_reason: kernel file changes
changed_paths:
- csrc/custom_all_reduce.cu
- csrc/flashinfer_comm_ops.cu
- flashinfer/custom_all_reduce.py
- flashinfer/jit/env.py
- include/flashinfer/distributed/comm_ops.h
- include/flashinfer/distributed/custom_all_reduce.cuh
- setup.py
- tests/test_custom_allreduce.py
head_ref_oid: 276313455e104b0a7ef886a8685516d1d2eb396b
artifact_dir: evidence/pull-bundles/flashinfer/gh-994
---
# feat: SM-constraint Communication Kernels

- Repository: `flashinfer-ai/flashinfer`
- PR: [994](https://github.com/flashinfer-ai/flashinfer/pull/994)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/custom_all_reduce.cu`
- `csrc/flashinfer_comm_ops.cu`
- `flashinfer/custom_all_reduce.py`
- `flashinfer/jit/env.py`
- `include/flashinfer/distributed/comm_ops.h`
- `include/flashinfer/distributed/custom_all_reduce.cuh`
- `setup.py`
- `tests/test_custom_allreduce.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-994`
