---
id: pr-sglang-18858
repo: sgl-project/sglang
pr: 18858
title: '[Perf] ~9.5x faster Blackwell MXFP4 MoE weight loading'
author: mmangkad
date: '2026-02-16'
url: https://github.com/sgl-project/sglang/pull/18858
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- moe
- quantization
techniques: []
hardware_features:
- fp4
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: b86c6491fa7080ccea00630935c9c88f9407b847
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/quantization/mxfp4.py
head_ref_oid: c57e99e2ede1dcb513981376e5597b141215586f
artifact_dir: evidence/pull-bundles/sglang/gh-18858
---
# [Perf] ~9.5x faster Blackwell MXFP4 MoE weight loading

- Repository: `sgl-project/sglang`
- PR: [18858](https://github.com/sgl-project/sglang/pull/18858)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/quantization/mxfp4.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-18858`
