---
id: pr-flash-attention-1698
repo: Dao-AILab/flash-attention
pr: 1698
title: '[fa3] Some fixes for windows build'
author: danthe3rd
date: '2025-06-08'
url: https://github.com/Dao-AILab/flash-attention/pull/1698
source_category: upstream-code
architectures:
- sm100
tags:
- sm80
techniques: []
hardware_features: []
kernel_types:
- attention
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: fc27c4f6aa2939ca609a508d6d535f04c03bc62f
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- hopper/flash_api.cpp
artifact_dir: evidence/pull-bundles/flash-attention/gh-1698
head_ref_oid: c914745df04d91f5bbad2c457b58bf71c3f45516
---
# [fa3] Some fixes for windows build

- Repository: `Dao-AILab/flash-attention`
- PR: [1698](https://github.com/Dao-AILab/flash-attention/pull/1698)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `hopper/flash_api.cpp`

## Evidence Bundle

`evidence/pull-bundles/flash-attention/gh-1698`
