---
id: pr-tilelang-1910
repo: tile-ai/tilelang
pr: 1910
title: '[Example] Flash Attention SM100'
author: Hale423
date: '2026-03-22'
url: https://github.com/tile-ai/tilelang/pull/1910
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- attention kernel
- blackwell
- sm100
techniques: []
hardware_features:
- blackwell
kernel_types:
- attention
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 6d7baa71d143dd7218852f7ff3fcbad27482cb1f
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- examples/flash_attention_sm100/gqa_bwd_bshd.py
- examples/flash_attention_sm100/gqa_fwd_bshd.py
- examples/flash_attention_sm100/mha_bwd_bshd.py
- examples/flash_attention_sm100/mha_fwd_bshd.py
- src/op/copy.cc
artifact_dir: evidence/pull-bundles/tilelang/gh-1910
head_ref_oid: c7fb9b82251b63c41ba9b801bdb651e1af8d4527
---
# [Example] Flash Attention SM100

- Repository: `tile-ai/tilelang`
- PR: [1910](https://github.com/tile-ai/tilelang/pull/1910)
- 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

- `examples/flash_attention_sm100/gqa_bwd_bshd.py`
- `examples/flash_attention_sm100/gqa_fwd_bshd.py`
- `examples/flash_attention_sm100/mha_bwd_bshd.py`
- `examples/flash_attention_sm100/mha_fwd_bshd.py`
- `src/op/copy.cc`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1910`
