---
id: pr-vllm-23791
repo: vllm-project/vllm
pr: 23791
title: '[Kernel] cuda kernels for upcoming decode context parallel feature'
author: youzhedian
date: '2025-08-28'
url: https://github.com/vllm-project/vllm/pull/23791
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 186aced5ffb62b62b41eb1beaf2a598ada43351b
inclusion_reason: kernel file changes
changed_paths:
- csrc/cache.h
- csrc/cache_kernels.cu
- csrc/torch_bindings.cpp
- tests/kernels/attention/test_cache.py
- vllm/_custom_ops.py
head_ref_oid: afe16167f4a61310243c42a2405f8987118f5932
artifact_dir: evidence/pull-bundles/vllm/gh-23791
---
# [Kernel] cuda kernels for upcoming decode context parallel feature

- Repository: `vllm-project/vllm`
- PR: [23791](https://github.com/vllm-project/vllm/pull/23791)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/cache.h`
- `csrc/cache_kernels.cu`
- `csrc/torch_bindings.cpp`
- `tests/kernels/attention/test_cache.py`
- `vllm/_custom_ops.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-23791`
