---
id: pr-flashinfer-2530
repo: flashinfer-ai/flashinfer
pr: 2530
title: pick fa2 for BatchDecodeWithPagedKVCacheWrapper auto backend
author: saltyminty
date: '2026-02-17'
url: https://github.com/flashinfer-ai/flashinfer/pull/2530
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- attention
- decode
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 55ba155d40fbe14f7d6cba769d96076eca1f0e55
inclusion_reason: kernel file changes
changed_paths:
- benchmarks/README.md
- benchmarks/routines/attention.py
- benchmarks/routines/flashinfer_benchmark_utils.py
- flashinfer/decode.py
head_ref_oid: 8f155573621f7f795803ab535ea306b39f03210e
artifact_dir: evidence/pull-bundles/flashinfer/gh-2530
---
# pick fa2 for BatchDecodeWithPagedKVCacheWrapper auto backend

- Repository: `flashinfer-ai/flashinfer`
- PR: [2530](https://github.com/flashinfer-ai/flashinfer/pull/2530)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `benchmarks/README.md`
- `benchmarks/routines/attention.py`
- `benchmarks/routines/flashinfer_benchmark_utils.py`
- `flashinfer/decode.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2530`
