---
id: pr-vllm-20500
repo: vllm-project/vllm
pr: 20500
title: '[Perf] Reuse workspace for FP8+FP4 Marlin MoE'
author: mgoin
date: '2025-09-16'
url: https://github.com/vllm-project/vllm/pull/20500
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- fp8
- moe
- quantization
techniques: []
hardware_features:
- fp4
- fp8
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: dbebb7f812123b4a0efe5b085582d3345fe7f740
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py
- vllm/model_executor/layers/quantization/fp8.py
- vllm/model_executor/layers/quantization/modelopt.py
head_ref_oid: 4da52ce53b8353591ded28c0be0f7115e91f4d26
artifact_dir: evidence/pull-bundles/vllm/gh-20500
---
# [Perf] Reuse workspace for FP8+FP4 Marlin MoE

- Repository: `vllm-project/vllm`
- PR: [20500](https://github.com/vllm-project/vllm/pull/20500)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/quantization/compressed_tensors/compressed_tensors_moe.py`
- `vllm/model_executor/layers/quantization/fp8.py`
- `vllm/model_executor/layers/quantization/modelopt.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-20500`
