---
id: pr-sglang-22091
repo: sgl-project/sglang
pr: 22091
title: '[diffusion] Default NVFP4 to CUTLASS and add all-model shape benchmarks'
author: BBuf
date: '2026-04-04'
url: https://github.com/sgl-project/sglang/pull/22091
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- nvfp4
techniques:
- kernel-fusion
hardware_features:
- fp4
- nvfp4
kernel_types: []
languages:
- cuda-cpp
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 82ea4906cf495abba880111e1e71b423bef0c969
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/jit_kernel/benchmark/diffusion/bench_diffusion_nvfp4_scaled_mm.py
- python/sglang/jit_kernel/benchmark/diffusion/bench_norm_impls.py
- python/sglang/jit_kernel/benchmark/diffusion/diffusion_nvfp4_shapes.json
- python/sglang/multimodal_gen/envs.py
- python/sglang/multimodal_gen/runtime/loader/transformer_load_utils.py
- python/sglang/multimodal_gen/runtime/platforms/cuda.py
- python/sglang/multimodal_gen/runtime/platforms/interface.py
head_ref_oid: 86d3bacc06d088a13eba45aa82c130886ffb310a
artifact_dir: evidence/pull-bundles/sglang/gh-22091
---
# [diffusion] Default NVFP4 to CUTLASS and add all-model shape benchmarks

- Repository: `sgl-project/sglang`
- PR: [22091](https://github.com/sgl-project/sglang/pull/22091)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/jit_kernel/benchmark/diffusion/bench_diffusion_nvfp4_scaled_mm.py`
- `python/sglang/jit_kernel/benchmark/diffusion/bench_norm_impls.py`
- `python/sglang/jit_kernel/benchmark/diffusion/diffusion_nvfp4_shapes.json`
- `python/sglang/multimodal_gen/envs.py`
- `python/sglang/multimodal_gen/runtime/loader/transformer_load_utils.py`
- `python/sglang/multimodal_gen/runtime/platforms/cuda.py`
- `python/sglang/multimodal_gen/runtime/platforms/interface.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-22091`
