---
id: pr-vllm-16828
repo: vllm-project/vllm
pr: 16828
title: '[Kernel] Unified Triton kernel that doesn''t distinguish between prefill + decode'
author: tdoublep
date: '2025-05-06'
url: https://github.com/vllm-project/vllm/pull/16828
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
- prefill
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
- prefill
languages:
- triton
captured_at: '2026-04-27'
status: merged
merge_sha: 2f925e5777cce9d574292bb6c91ff9f92de3fe62
inclusion_reason: kernel file changes
changed_paths:
- tests/kernels/test_triton_unified_attention.py
- vllm/attention/ops/triton_unified_attention.py
- vllm/v1/attention/backends/triton_attn.py
head_ref_oid: 0efb66907b4b25466874ee3b289f240a0c584ea9
artifact_dir: evidence/pull-bundles/vllm/gh-16828
---
# [Kernel] Unified Triton kernel that doesn't distinguish between prefill + decode

- Repository: `vllm-project/vllm`
- PR: [16828](https://github.com/vllm-project/vllm/pull/16828)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `tests/kernels/test_triton_unified_attention.py`
- `vllm/attention/ops/triton_unified_attention.py`
- `vllm/v1/attention/backends/triton_attn.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-16828`
