---
id: pr-vllm-21401
repo: vllm-project/vllm
pr: 21401
title: '[V1] [Hybrid] Enable Full CUDA Graph (decode-only) for Mamba layers'
author: tdoublep
date: '2025-08-10'
url: https://github.com/vllm-project/vllm/pull/21401
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 61f67d8acdb4b77c168d1150e81a5c284c6f8ce7
inclusion_reason: defer
changed_paths:
- tests/models/language/generation/test_hybrid.py
- vllm/v1/attention/backends/mamba_attn.py
artifact_dir: evidence/pull-bundles/vllm/gh-21401
head_ref_oid: 2868ba7a17ba84d9f12a52b98e654470398e6943
---
# [V1] [Hybrid] Enable Full CUDA Graph (decode-only) for Mamba layers

- Repository: `vllm-project/vllm`
- PR: [21401](https://github.com/vllm-project/vllm/pull/21401)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `tests/models/language/generation/test_hybrid.py`
- `vllm/v1/attention/backends/mamba_attn.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21401`
