---
id: pr-vllm-16457
repo: vllm-project/vllm
pr: 16457
title: '[Perf]Optimize rotary_emb implementation to use Triton operator for improved inference performance'
author: cynthieye
date: '2025-04-25'
url: https://github.com/vllm-project/vllm/pull/16457
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
techniques: []
hardware_features: []
kernel_types: []
languages:
- triton
captured_at: '2026-04-27'
status: merged
merge_sha: b22980a1dc894d98de64119af4a580881f16b2f9
inclusion_reason: semantic match with file changes
changed_paths:
- cmake/external_projects/vllm_flash_attn.cmake
- vllm/model_executor/layers/rotary_embedding.py
head_ref_oid: b027c653b97e43e5642be824dbf294dcb7cab1a3
artifact_dir: evidence/pull-bundles/vllm/gh-16457
---
# [Perf]Optimize rotary_emb implementation to use Triton operator for improved inference performance

- Repository: `vllm-project/vllm`
- PR: [16457](https://github.com/vllm-project/vllm/pull/16457)
- Decision: `semantic match with file changes`
- Reason: semantic match with file changes

## Changed Paths

- `cmake/external_projects/vllm_flash_attn.cmake`
- `vllm/model_executor/layers/rotary_embedding.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-16457`
