---
id: pr-vllm-15946
repo: vllm-project/vllm
pr: 15946
title: '[Bugfix] fix use_atomic_add support of marlin kernel when using v1 engine'
author: jinzhen-lin
date: '2025-04-06'
url: https://github.com/vllm-project/vllm/pull/15946
source_category: upstream-code
architectures:
- sm100
tags:
- quantization
techniques: []
hardware_features: []
kernel_types:
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 2fa66ef713a62f96c24135ceffd70f1bbafea4e4
inclusion_reason: kernel file changes
changed_paths:
- csrc/quantization/gptq_marlin/gptq_marlin.cu
- vllm/model_executor/layers/quantization/utils/marlin_utils.py
head_ref_oid: 69166a8d1f64f805681a928ee36857f85bc0383b
artifact_dir: evidence/pull-bundles/vllm/gh-15946
---
# [Bugfix] fix use_atomic_add support of marlin kernel when using v1 engine

- Repository: `vllm-project/vllm`
- PR: [15946](https://github.com/vllm-project/vllm/pull/15946)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/quantization/gptq_marlin/gptq_marlin.cu`
- `vllm/model_executor/layers/quantization/utils/marlin_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-15946`
