---
id: pr-vllm-37252
repo: vllm-project/vllm
pr: 37252
title: '[Perf] Set Flashinfer sparse MLA as default backend for FP8 kv cache'
author: wzhao18
date: '2026-03-17'
url: https://github.com/vllm-project/vllm/pull/37252
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- fp8
- mla
techniques: []
hardware_features:
- fp8
kernel_types:
- attention
- mla
languages:
- cuda-cpp
captured_at: '2026-04-17'
status: merged
merge_sha: b36adfa349cfab0e79f3d736d5e5413bd3ee19f5
inclusion_reason: kernel file changes
changed_paths:
- docs/design/attention_backends.md
- tools/pre_commit/generate_attention_backend_docs.py
- vllm/platforms/cuda.py
head_ref_oid: c0495264e9de33c5cd32f86175e49a4a065e6492
artifact_dir: evidence/pull-bundles/vllm/gh-37252
---
# [Perf] Set Flashinfer sparse MLA as default backend for FP8 kv cache

- Repository: `vllm-project/vllm`
- PR: [37252](https://github.com/vllm-project/vllm/pull/37252)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `docs/design/attention_backends.md`
- `tools/pre_commit/generate_attention_backend_docs.py`
- `vllm/platforms/cuda.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-37252`
