---
id: pr-sglang-17816
repo: sgl-project/sglang
pr: 17816
title: 'fix(quantization): add sgl_kernel fallback for FP4 quantize on Blackwell GPUs'
author: MikkoParkkola
date: '2026-01-27'
url: https://github.com/sgl-project/sglang/pull/17816
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: c56d19b9779cc5e4b613e9fee5cb1f13fe5f1a0b
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/quantization/modelopt_quant.py
head_ref_oid: 1fcdf04defa00c3ebdf79c9f23ca4e3fe3b6230f
artifact_dir: evidence/pull-bundles/sglang/gh-17816
---
# fix(quantization): add sgl_kernel fallback for FP4 quantize on Blackwell GPUs

- Repository: `sgl-project/sglang`
- PR: [17816](https://github.com/sgl-project/sglang/pull/17816)
- 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-17816`
