---
id: pr-sglang-3643
repo: sgl-project/sglang
pr: 3643
title: 'feat: support flashinfer mla with prefix cache'
author: zhyncs
date: '2025-02-17'
url: https://github.com/sgl-project/sglang/pull/3643
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- mla
techniques: []
hardware_features: []
kernel_types:
- attention
- mla
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 714f3e6362791ccc54a8845e5c6261d1e6d156cc
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/attention/flashinfer_backend.py
- python/sglang/srt/managers/schedule_batch.py
- python/sglang/srt/model_executor/model_runner.py
- python/sglang/srt/models/deepseek_v2.py
head_ref_oid: 3a3db1de3dc0446ffc8818fc41e94e0c865694df
artifact_dir: evidence/pull-bundles/sglang/gh-3643
---
# feat: support flashinfer mla with prefix cache

- Repository: `sgl-project/sglang`
- PR: [3643](https://github.com/sgl-project/sglang/pull/3643)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/attention/flashinfer_backend.py`
- `python/sglang/srt/managers/schedule_batch.py`
- `python/sglang/srt/model_executor/model_runner.py`
- `python/sglang/srt/models/deepseek_v2.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-3643`
