---
id: pr-sglang-16622
repo: sgl-project/sglang
pr: 16622
title: Fix FP8 MoE NaN with DeepGEMM on Blackwell
author: luoyuyan
date: '2026-01-08'
url: https://github.com/sgl-project/sglang/pull/16622
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- gemm
- moe
- quantization
techniques: []
hardware_features:
- fp8
kernel_types:
- gemm
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: fb7609f1ddbebe9fd50ba789e69b6a4dead3f1e6
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/quantization/fp8.py
head_ref_oid: 0d4c845d914e5075393e9dab70b3eee1e3c60874
artifact_dir: evidence/pull-bundles/sglang/gh-16622
---
# Fix FP8 MoE NaN with DeepGEMM on Blackwell

- Repository: `sgl-project/sglang`
- PR: [16622](https://github.com/sgl-project/sglang/pull/16622)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/quantization/fp8.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-16622`
