---
id: pr-vllm-14138
repo: vllm-project/vllm
pr: 14138
title: '[Kernel] optimize performance of gptq marlin kernel when n is small'
author: jinzhen-lin
date: '2025-03-07'
url: https://github.com/vllm-project/vllm/pull/14138
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
- quantization
techniques: []
hardware_features: []
kernel_types:
- gemm
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: d0feea31c70f9540a8993c4e96103a03cd935416
inclusion_reason: kernel file changes
changed_paths:
- csrc/quantization/gptq_marlin/gptq_marlin.cu
- csrc/torch_bindings.cpp
- tests/kernels/test_marlin_gemm.py
- vllm/_custom_ops.py
- vllm/envs.py
- vllm/model_executor/layers/quantization/utils/marlin_utils.py
head_ref_oid: 343e3aaed31c3eae2277a84dafe1a445e8742fdf
artifact_dir: evidence/pull-bundles/vllm/gh-14138
---
# [Kernel] optimize performance of gptq marlin kernel when n is small

- Repository: `vllm-project/vllm`
- PR: [14138](https://github.com/vllm-project/vllm/pull/14138)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/quantization/gptq_marlin/gptq_marlin.cu`
- `csrc/torch_bindings.cpp`
- `tests/kernels/test_marlin_gemm.py`
- `vllm/_custom_ops.py`
- `vllm/envs.py`
- `vllm/model_executor/layers/quantization/utils/marlin_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-14138`
