---
id: pr-vllm-37606
repo: vllm-project/vllm
pr: 37606
title: '[ROCm][Bugfix] fix cache block size mismatch for aiter unified attention'
author: divakar-amd
date: '2026-03-20'
url: https://github.com/vllm-project/vllm/pull/37606
source_category: upstream-code
architectures:
- sm100
tags:
- attention
techniques: []
hardware_features: []
kernel_types:
- attention
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 4ca3fa6bb4633fed1196292f764ce8cf13f647b5
inclusion_reason: kernel file changes
changed_paths:
- vllm/platforms/rocm.py
- vllm/v1/attention/backends/rocm_aiter_unified_attn.py
head_ref_oid: 2ad7a35c56ece950382cd7c8333c80cafc1d6fb5
artifact_dir: evidence/pull-bundles/vllm/gh-37606
---
# [ROCm][Bugfix] fix cache block size mismatch for aiter unified attention

- Repository: `vllm-project/vllm`
- PR: [37606](https://github.com/vllm-project/vllm/pull/37606)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/platforms/rocm.py`
- `vllm/v1/attention/backends/rocm_aiter_unified_attn.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-37606`
