---
id: pr-vllm-31531
repo: vllm-project/vllm
pr: 31531
title: Use the same memory for workspace13 and fused_output.
author: halyavin
date: '2026-01-18'
url: https://github.com/vllm-project/vllm/pull/31531
source_category: upstream-code
architectures:
- sm100
tags:
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- moe
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: ba29ab441e9bae7d84b9c191ec78256201cda699
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/fused_moe/modular_kernel.py
head_ref_oid: 378a0aae27e3ee2d0ddb23aefbb6b7efc85cd9e7
artifact_dir: evidence/pull-bundles/vllm/gh-31531
---
# Use the same memory for workspace13 and fused_output.

- Repository: `vllm-project/vllm`
- PR: [31531](https://github.com/vllm-project/vllm/pull/31531)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/fused_moe/modular_kernel.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-31531`
