---
id: pr-vllm-33540
repo: vllm-project/vllm
pr: 33540
title: '[Feature][Core] Support Fabric detection to adapt the MNNVL protocol for the GB series'
author: kebe7jun
date: '2026-02-02'
url: https://github.com/vllm-project/vllm/pull/33540
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- gemm
techniques: []
hardware_features: []
kernel_types: []
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 528e9b14900fc8a012f2599172e2a4576caafe1a
inclusion_reason: kernel file changes
changed_paths:
- csrc/cumem_allocator.cpp
head_ref_oid: 14b11672d81532583de8738669355a9f5b351dc4
artifact_dir: evidence/pull-bundles/vllm/gh-33540
---
# [Feature][Core] Support Fabric detection to adapt the MNNVL protocol for the GB series

- Repository: `vllm-project/vllm`
- PR: [33540](https://github.com/vllm-project/vllm/pull/33540)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/cumem_allocator.cpp`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-33540`
