---
id: pr-sglang-14162
repo: sgl-project/sglang
pr: 14162
title: 'DeepSeek-R1-0528-w4a8: DeepEP Low Latency Dispatch Adopts FP8 Communication'
author: xieminghe1
date: '2026-03-30'
url: https://github.com/sgl-project/sglang/pull/14162
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 7119d5974798d157bc3a16cc9074e84c2b9c4c9a
inclusion_reason: defer
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
artifact_dir: evidence/pull-bundles/sglang/gh-14162
head_ref_oid: 15fe4903007d2cecda7542198ffd1c9d1f0bbee8
---
# DeepSeek-R1-0528-w4a8: DeepEP Low Latency Dispatch Adopts FP8 Communication

- Repository: `sgl-project/sglang`
- PR: [14162](https://github.com/sgl-project/sglang/pull/14162)
- Decision: `defer`
- Reason: defer

## 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-14162`
