---
id: pr-sglang-6449
repo: sgl-project/sglang
pr: 6449
title: Fix bug of deepseek-v3 under DP+EP mode with large batchsize/seqlen
author: likesen-alibaba
date: '2025-07-10'
url: https://github.com/sgl-project/sglang/pull/6449
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- gemm
- quantization
techniques: []
hardware_features:
- fp8
kernel_types:
- gemm
- quantization
languages:
- cuda-cpp
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 4a0d19198bf9222edcb9879028990b481f8ffe56
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/quantization/fp8_kernel.py
- sgl-kernel/csrc/gemm/per_token_group_quant_8bit.cu
head_ref_oid: 9d684f926c683a260bb9e28db50d9ab575a22235
artifact_dir: evidence/pull-bundles/sglang/gh-6449
---
# Fix bug of deepseek-v3 under DP+EP mode with large batchsize/seqlen

- Repository: `sgl-project/sglang`
- PR: [6449](https://github.com/sgl-project/sglang/pull/6449)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/quantization/fp8_kernel.py`
- `sgl-kernel/csrc/gemm/per_token_group_quant_8bit.cu`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-6449`
