---
id: pr-vllm-29887
repo: vllm-project/vllm
pr: 29887
title: '[ROCm][Perf] Enable shuffle kv cache layout and assembly paged attention kernel for `AiterFlashAttentionBackend`'
author: ganyi1996ppo
date: '2026-01-15'
url: https://github.com/vllm-project/vllm/pull/29887
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 130d6c9514856cb5a152329f0382d60ff6e8d97e
inclusion_reason: defer
changed_paths:
- vllm/_aiter_ops.py
- vllm/envs.py
- vllm/v1/attention/backends/rocm_aiter_fa.py
artifact_dir: evidence/pull-bundles/vllm/gh-29887
head_ref_oid: 25da2ff26eedffd305b0dc439a298d5c3838da86
---
# [ROCm][Perf] Enable shuffle kv cache layout and assembly paged attention kernel for `AiterFlashAttentionBackend`

- Repository: `vllm-project/vllm`
- PR: [29887](https://github.com/vllm-project/vllm/pull/29887)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `vllm/_aiter_ops.py`
- `vllm/envs.py`
- `vllm/v1/attention/backends/rocm_aiter_fa.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-29887`
