---
id: pr-flashinfer-2233
repo: flashinfer-ai/flashinfer
pr: 2233
title: 'feat: Fused RMSNorm + FP4 Quantization Kernels in CuTe-DSL'
author: bkryu
date: '2025-12-20'
url: https://github.com/flashinfer-ai/flashinfer/pull/2233
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp4
kernel_types:
- quantization
languages:
- cute-dsl
captured_at: '2026-04-27'
status: merged
merge_sha: 07d8568688e7da432ee13e27b9964684c037bdab
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/__init__.py
- flashinfer/cute_dsl/__init__.py
- flashinfer/cute_dsl/add_rmsnorm_fp4quant.py
- flashinfer/cute_dsl/rmsnorm_fp4quant.py
- flashinfer/norm.py
- tests/norm/test_add_rmsnorm_fp4_quant_cute_dsl.py
- tests/norm/test_rmsnorm_fp4_quant_cute_dsl.py
head_ref_oid: 77930631b67e1fc166378b7d2a162aa5fd2134e1
artifact_dir: evidence/pull-bundles/flashinfer/gh-2233
---
# feat: Fused RMSNorm + FP4 Quantization Kernels in CuTe-DSL

- Repository: `flashinfer-ai/flashinfer`
- PR: [2233](https://github.com/flashinfer-ai/flashinfer/pull/2233)
- 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/__init__.py`
- `flashinfer/cute_dsl/__init__.py`
- `flashinfer/cute_dsl/add_rmsnorm_fp4quant.py`
- `flashinfer/cute_dsl/rmsnorm_fp4quant.py`
- `flashinfer/norm.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-2233`
