---
id: pr-vllm-27457
repo: vllm-project/vllm
pr: 27457
title: '[Performance][MLA][ROCm] Remove redundant D2D copy in deepseek'
author: ganyi1996ppo
date: '2025-11-26'
url: https://github.com/vllm-project/vllm/pull/27457
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: d9d342d214b8c13f71215318a6d9252cc4a5ca47
inclusion_reason: defer
changed_paths:
- csrc/attention/merge_attn_states.cu
- csrc/ops.h
- csrc/torch_bindings.cpp
- vllm/attention/ops/triton_merge_attn_states.py
- vllm/v1/attention/backends/mla/common.py
artifact_dir: evidence/pull-bundles/vllm/gh-27457
head_ref_oid: 56251a7d10c1a1aa1fe4fbdedb3e3cff5aed0224
---
# [Performance][MLA][ROCm] Remove redundant D2D copy in deepseek

- Repository: `vllm-project/vllm`
- PR: [27457](https://github.com/vllm-project/vllm/pull/27457)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `csrc/attention/merge_attn_states.cu`
- `csrc/ops.h`
- `csrc/torch_bindings.cpp`
- `vllm/attention/ops/triton_merge_attn_states.py`
- `vllm/v1/attention/backends/mla/common.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-27457`
