---
id: pr-sglang-15280
repo: sgl-project/sglang
pr: 15280
title: '[NVIDIA] Fixes for NVFP4 all-gather with spec decoding'
author: trevor-m
date: '2025-12-17'
url: https://github.com/sgl-project/sglang/pull/15280
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- moe
- nvfp4
- quantization
techniques: []
hardware_features:
- fp4
- nvfp4
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: c8c64876a77228028304fb447622f846d6f65c92
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/moe/utils.py
- python/sglang/srt/layers/quantization/modelopt_quant.py
head_ref_oid: d0341bbefe0880e1983d4f102000b2876a481847
artifact_dir: evidence/pull-bundles/sglang/gh-15280
---
# [NVIDIA] Fixes for NVFP4 all-gather with spec decoding

- Repository: `sgl-project/sglang`
- PR: [15280](https://github.com/sgl-project/sglang/pull/15280)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

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

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-15280`
