---
id: pr-flashinfer-2260
repo: flashinfer-ai/flashinfer
pr: 2260
title: 'fix: Add global scale support and optional output allocation for RMSNorm+FP4Quant fusion kernels'
author: bkryu
date: '2026-01-01'
url: https://github.com/flashinfer-ai/flashinfer/pull/2260
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
techniques:
- kernel-fusion
hardware_features:
- fp4
kernel_types: []
languages:
- cute-dsl
captured_at: '2026-04-27'
status: merged
merge_sha: 6f1624cf9be1506d3b3878f0bb52770ed336101e
inclusion_reason: semantic match with file changes
changed_paths:
- benchmarks/bench_cute_dsl_add_rmsnorm_fp4quant.py
- benchmarks/bench_cute_dsl_rmsnorm_fp4quant.py
- flashinfer/cute_dsl/add_rmsnorm_fp4quant.py
- flashinfer/cute_dsl/rmsnorm_fp4quant.py
- tests/norm/test_add_rmsnorm_fp4_quant_cute_dsl.py
- tests/norm/test_rmsnorm_fp4_quant_cute_dsl.py
head_ref_oid: 532c80a5d58a5002fa3e350594042295cc7e37cf
artifact_dir: evidence/pull-bundles/flashinfer/gh-2260
---
# fix: Add global scale support and optional output allocation for RMSNorm+FP4Quant fusion kernels

- Repository: `flashinfer-ai/flashinfer`
- PR: [2260](https://github.com/flashinfer-ai/flashinfer/pull/2260)
- Decision: `semantic match with file changes`
- Reason: semantic match with file changes

## Changed Paths

- `benchmarks/bench_cute_dsl_add_rmsnorm_fp4quant.py`
- `benchmarks/bench_cute_dsl_rmsnorm_fp4quant.py`
- `flashinfer/cute_dsl/add_rmsnorm_fp4quant.py`
- `flashinfer/cute_dsl/rmsnorm_fp4quant.py`
- `tests/norm/test_add_rmsnorm_fp4_quant_cute_dsl.py`
- `tests/norm/test_rmsnorm_fp4_quant_cute_dsl.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2260`
