---
id: pr-vllm-14384
repo: vllm-project/vllm
pr: 14384
title: '[Perf] Reduce MLA CPU overheads in V1'
author: LucasWilkinson
date: '2025-03-07'
url: https://github.com/vllm-project/vllm/pull/14384
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: dae68969774e41b93b01cd31171ca033a92b574a
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/rotary_embedding.py
- vllm/v1/attention/backends/mla/common.py
head_ref_oid: 4e1ef0dddd2fdb4bc08a5b0403936cdc0580c2d5
artifact_dir: evidence/pull-bundles/vllm/gh-14384
---
# [Perf] Reduce MLA CPU overheads in V1

- Repository: `vllm-project/vllm`
- PR: [14384](https://github.com/vllm-project/vllm/pull/14384)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/rotary_embedding.py`
- `vllm/v1/attention/backends/mla/common.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-14384`
