---
id: pr-sglang-21314
repo: sgl-project/sglang
pr: 21314
title: CUTLASS NVFP4 GEMM improvement of SM120
author: b8zhong
date: '2026-04-01'
url: https://github.com/sgl-project/sglang/pull/21314
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- fp4
- gemm
- nvfp4
- quantization
techniques: []
hardware_features:
- fp4
- nvfp4
kernel_types:
- gemm
- quantization
languages:
- cuda-cpp
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 6a9b09847c93be0d439976f7a7c3bc0a6fc13c80
inclusion_reason: kernel file changes
changed_paths:
- docs/advanced_features/quantization.md
- python/sglang/jit_kernel/benchmark/bench_nvfp4_scaled_mm.py
- python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_common.cuh
- python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_kernels.cuh
- python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_sm100.cuh
- python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_sm120.cuh
- python/sglang/srt/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py
- python/sglang/srt/layers/quantization/fp4_utils.py
- python/sglang/srt/layers/quantization/modelopt_quant.py
- python/sglang/srt/server_args.py
- sgl-kernel/benchmark/bench_fp4_gemm.py
- sgl-kernel/benchmark/bench_nvfp4_scaled_gemm.py
head_ref_oid: 8b72a407df7283b749ca768e66dc7efbc1f7caf5
artifact_dir: evidence/pull-bundles/sglang/gh-21314
---
# CUTLASS NVFP4 GEMM improvement of SM120

- Repository: `sgl-project/sglang`
- PR: [21314](https://github.com/sgl-project/sglang/pull/21314)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `docs/advanced_features/quantization.md`
- `python/sglang/jit_kernel/benchmark/bench_nvfp4_scaled_mm.py`
- `python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_common.cuh`
- `python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_kernels.cuh`
- `python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_sm100.cuh`
- `python/sglang/jit_kernel/csrc/gemm/nvfp4/nvfp4_scaled_mm_sm120.cuh`
- `python/sglang/srt/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py`
- `python/sglang/srt/layers/quantization/fp4_utils.py`
- `python/sglang/srt/layers/quantization/modelopt_quant.py`
- `python/sglang/srt/server_args.py`
- `sgl-kernel/benchmark/bench_fp4_gemm.py`
- `sgl-kernel/benchmark/bench_nvfp4_scaled_gemm.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-21314`
