---
id: pr-flashinfer-2421
repo: flashinfer-ai/flashinfer
pr: 2421
title: 'refactor: simplify fp4 rmsnorm'
author: yzh119
date: '2026-01-27'
url: https://github.com/flashinfer-ai/flashinfer/pull/2421
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
techniques: []
hardware_features:
- fp4
kernel_types: []
languages:
- cute-dsl
captured_at: '2026-04-27'
status: merged
merge_sha: 67fc0a152d6b73f5a0712e6baabf1d91844eeb1b
inclusion_reason: semantic match with file changes
changed_paths:
- flashinfer/cute_dsl/add_rmsnorm_fp4quant.py
- flashinfer/cute_dsl/fp4_common.py
- flashinfer/cute_dsl/rmsnorm_fp4quant.py
head_ref_oid: a0be6986c9e0e289e61d1a6ad1c868825371326b
artifact_dir: evidence/pull-bundles/flashinfer/gh-2421
---
# refactor: simplify fp4 rmsnorm

- Repository: `flashinfer-ai/flashinfer`
- PR: [2421](https://github.com/flashinfer-ai/flashinfer/pull/2421)
- Decision: `semantic match with file changes`
- Reason: semantic match with file changes

## Changed Paths

- `flashinfer/cute_dsl/add_rmsnorm_fp4quant.py`
- `flashinfer/cute_dsl/fp4_common.py`
- `flashinfer/cute_dsl/rmsnorm_fp4quant.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2421`
