---
id: pr-vllm-31317
repo: vllm-project/vllm
pr: 31317
title: pin lora_b moe weights on cpu
author: gnovack
date: '2026-01-05'
url: https://github.com/vllm-project/vllm/pull/31317
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: c77a993cc297f23ae6f0c3ff1efb2d6d022bdfd2
inclusion_reason: kernel file changes
changed_paths:
- vllm/lora/layers/fused_moe.py
- vllm/lora/model_manager.py
head_ref_oid: 9c2c3363c5fdd35e0109669f3b5aab5960023f57
artifact_dir: evidence/pull-bundles/vllm/gh-31317
---
# pin lora_b moe weights on cpu

- Repository: `vllm-project/vllm`
- PR: [31317](https://github.com/vllm-project/vllm/pull/31317)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/lora/layers/fused_moe.py`
- `vllm/lora/model_manager.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-31317`
