---
id: pr-vllm-30528
repo: vllm-project/vllm
pr: 30528
title: '[Perf] Set split_k to 1 for triton_kernels'
author: xyang16
date: '2025-12-12'
url: https://github.com/vllm-project/vllm/pull/30528
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- fp4
- quantization
techniques: []
hardware_features:
- fp4
kernel_types:
- quantization
languages:
- triton
captured_at: '2026-04-27'
status: merged
merge_sha: 1f19d8f899b228a530d256bf9476d9b1ea3039af
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/quantization/utils/mxfp4_utils.py
head_ref_oid: c011d533ec1850a4a57d098fcbf10410bc80e816
artifact_dir: evidence/pull-bundles/vllm/gh-30528
---
# [Perf] Set split_k to 1 for triton_kernels

- Repository: `vllm-project/vllm`
- PR: [30528](https://github.com/vllm-project/vllm/pull/30528)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/quantization/utils/mxfp4_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-30528`
