---
id: pr-sglang-8552
repo: sgl-project/sglang
pr: 8552
title: '[NVIDIA] Add Low Latency NVFP4 decode kernels from Flashinfer'
author: azhurkevich
date: '2025-08-04'
url: https://github.com/sgl-project/sglang/pull/8552
source_category: upstream-code
architectures:
- sm100
tags:
- decode
- fp4
- kernel-fusion
- moe
- nvfp4
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp4
- nvfp4
kernel_types:
- decode
- moe
- quantization
languages:
- python
- triton
captured_at: '2026-04-27'
status: merged
merge_sha: 915140fd18c9ff4193e994e6d756ea762a52240a
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/moe/ep_moe/layer.py
- python/sglang/srt/layers/moe/fused_moe_triton/layer.py
- python/sglang/srt/layers/moe/utils.py
- python/sglang/srt/layers/quantization/modelopt_quant.py
- python/sglang/srt/managers/schedule_batch.py
- python/sglang/srt/models/deepseek_v2.py
- python/sglang/srt/models/glm4_moe.py
- python/sglang/srt/server_args.py
head_ref_oid: cb91e541e062f1513f2e19c46cbb80e0d882536a
artifact_dir: evidence/pull-bundles/sglang/gh-8552
---
# [NVIDIA] Add Low Latency NVFP4 decode kernels from Flashinfer

- Repository: `sgl-project/sglang`
- PR: [8552](https://github.com/sgl-project/sglang/pull/8552)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/moe/ep_moe/layer.py`
- `python/sglang/srt/layers/moe/fused_moe_triton/layer.py`
- `python/sglang/srt/layers/moe/utils.py`
- `python/sglang/srt/layers/quantization/modelopt_quant.py`
- `python/sglang/srt/managers/schedule_batch.py`
- `python/sglang/srt/models/deepseek_v2.py`
- `python/sglang/srt/models/glm4_moe.py`
- `python/sglang/srt/server_args.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-8552`
