---
id: pr-flashinfer-1230
repo: flashinfer-ai/flashinfer
pr: 1230
title: 'feat: Add non-causal cudnn prefill kernels'
author: Anerudhan
date: '2025-07-08'
url: https://github.com/flashinfer-ai/flashinfer/pull/1230
source_category: upstream-code
architectures:
- sm100
tags:
- prefill
techniques: []
hardware_features: []
kernel_types:
- prefill
languages:
- cuda-cpp
captured_at: '2026-04-17'
status: merged
merge_sha: c77d3e11addf5ce35ae27ad015fd7df60f9cd435
inclusion_reason: kernel file changes
changed_paths:
- csrc/cudnn_sdpa_kernel_launcher.cu
- flashinfer/cudnn/prefill.py
- tests/test_cudnn_prefill.py
- tests/test_cudnn_prefill_deepseek.py
head_ref_oid: 788bfe2734e51c003eaef89fa7452b638725f994
artifact_dir: evidence/pull-bundles/flashinfer/gh-1230
---
# feat: Add non-causal cudnn prefill kernels

- Repository: `flashinfer-ai/flashinfer`
- PR: [1230](https://github.com/flashinfer-ai/flashinfer/pull/1230)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/cudnn_sdpa_kernel_launcher.cu`
- `flashinfer/cudnn/prefill.py`
- `tests/test_cudnn_prefill.py`
- `tests/test_cudnn_prefill_deepseek.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1230`
