---
id: pr-sglang-22316
repo: sgl-project/sglang
pr: 22316
title: '[Reland] DeepSeek-R1-0528-w4a8: DeepEP Low Latency Dispatch Adopts FP8 Communication'
author: xieminghe1
date: '2026-04-10'
url: https://github.com/sgl-project/sglang/pull/22316
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- moe
- quantization
techniques: []
hardware_features:
- fp8
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 18f41ac427461b75ba769d8589196fe2a9a2fcb5
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/moe/cutlass_w4a8_moe.py
- python/sglang/srt/layers/moe/ep_moe/kernels.py
- python/sglang/srt/layers/moe/ep_moe/layer.py
- python/sglang/srt/layers/moe/token_dispatcher/deepep.py
- python/sglang/srt/layers/quantization/w4afp8.py
head_ref_oid: 9ba26cdb4b3976f662a247987cfb0baaa912fe3d
artifact_dir: evidence/pull-bundles/sglang/gh-22316
---
# [Reland] DeepSeek-R1-0528-w4a8: DeepEP Low Latency Dispatch Adopts FP8 Communication

- Repository: `sgl-project/sglang`
- PR: [22316](https://github.com/sgl-project/sglang/pull/22316)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/moe/cutlass_w4a8_moe.py`
- `python/sglang/srt/layers/moe/ep_moe/kernels.py`
- `python/sglang/srt/layers/moe/ep_moe/layer.py`
- `python/sglang/srt/layers/moe/token_dispatcher/deepep.py`
- `python/sglang/srt/layers/quantization/w4afp8.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-22316`
