---
id: pr-vllm-38879
repo: vllm-project/vllm
pr: 38879
title: '[Gemma4] Enable Fast Prefill Optimization'
author: LucasWilkinson
date: '2026-04-06'
url: https://github.com/vllm-project/vllm/pull/38879
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
- prefill
techniques: []
hardware_features: []
kernel_types:
- gemm
- prefill
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 47e605092b7fce3d64264b34250b1a286f344633
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/models/gemma4.py
head_ref_oid: d67a65917503bb30bce7cd7243b1118b95fc0a17
artifact_dir: evidence/pull-bundles/vllm/gh-38879
---
# [Gemma4] Enable Fast Prefill Optimization

- Repository: `vllm-project/vllm`
- PR: [38879](https://github.com/vllm-project/vllm/pull/38879)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/models/gemma4.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-38879`
