---
id: pr-vllm-27931
repo: vllm-project/vllm
pr: 27931
title: '[Kernel] Optimize rms_norm kernel'
author: xyang16
date: '2025-11-11'
url: https://github.com/vllm-project/vllm/pull/27931
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
techniques: []
hardware_features: []
kernel_types: []
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 6c3c0f8235cacce28982687e362b80d953ea7617
inclusion_reason: kernel file changes
changed_paths:
- csrc/dispatch_utils.h
- csrc/layernorm_kernels.cu
- csrc/layernorm_quant_kernels.cu
head_ref_oid: 9db8a197cc0d536002e251c4f6d0facd1c093b54
artifact_dir: evidence/pull-bundles/vllm/gh-27931
---
# [Kernel] Optimize rms_norm kernel

- Repository: `vllm-project/vllm`
- PR: [27931](https://github.com/vllm-project/vllm/pull/27931)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/dispatch_utils.h`
- `csrc/layernorm_kernels.cu`
- `csrc/layernorm_quant_kernels.cu`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-27931`
