---
id: pr-sglang-12640
repo: sgl-project/sglang
pr: 12640
title: '[NVIDIA] Fix wrong symmetric sizes for fp4 cases'
author: kaixih
date: '2025-11-04'
url: https://github.com/sgl-project/sglang/pull/12640
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- quantization
techniques: []
hardware_features:
- fp4
kernel_types:
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 34f7564df0378d2dba929549c0350cbc12713666
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/quantization/modelopt_quant.py
head_ref_oid: 9d64bd56ca69a45ac53593ae7468e269a8198419
artifact_dir: evidence/pull-bundles/sglang/gh-12640
---
# [NVIDIA] Fix wrong symmetric sizes for fp4 cases

- Repository: `sgl-project/sglang`
- PR: [12640](https://github.com/sgl-project/sglang/pull/12640)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

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

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-12640`
