---
id: pr-vllm-26135
repo: vllm-project/vllm
pr: 26135
title: '[ModelOpt] Load w13/w2_input_scale for all experts, nvfp4'
author: wenscarl
date: '2025-10-21'
url: https://github.com/vllm-project/vllm/pull/26135
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- moe
- nvfp4
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp4
- nvfp4
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: f95da13c3da5e5ff74e5f5f1da109c5e1cae0886
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/fused_moe/layer.py
- vllm/model_executor/layers/quantization/modelopt.py
- vllm/model_executor/layers/quantization/utils/flashinfer_utils.py
head_ref_oid: 7823488ce47e386fa7c7eafeb52b2a93064aec78
artifact_dir: evidence/pull-bundles/vllm/gh-26135
---
# [ModelOpt] Load w13/w2_input_scale for all experts, nvfp4

- Repository: `vllm-project/vllm`
- PR: [26135](https://github.com/vllm-project/vllm/pull/26135)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/fused_moe/layer.py`
- `vllm/model_executor/layers/quantization/modelopt.py`
- `vllm/model_executor/layers/quantization/utils/flashinfer_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-26135`
