---
id: pr-flash-attention-2368
repo: Dao-AILab/flash-attention
pr: 2368
title: '[Cute] fix: FA4 paged attention kv load for DeepSeek (192,128) on SM100'
author: Luosuu
date: '2026-03-18'
url: https://github.com/Dao-AILab/flash-attention/pull/2368
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- attention kernel
- blackwell
- cuda kernel
- cutlass
- fp8
- tma
techniques:
- async-copy
hardware_features:
- blackwell
- fp8
- tma
kernel_types:
- attention
languages:
- cuda-cpp
- cute-dsl
captured_at: '2026-05-16'
status: merged
merge_sha: ce917a66ea79bbe62181047b20e16c0e99c75f05
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- flash_attn/cute/flash_fwd_sm100.py
- tests/cute/test_flash_attn.py
artifact_dir: evidence/pull-bundles/flash-attention/gh-2368
head_ref_oid: ddc82159c71ff3162fa3bf78ed84926337fb4aab
---
# [Cute] fix: FA4 paged attention kv load for DeepSeek (192,128) on SM100

- Repository: `Dao-AILab/flash-attention`
- PR: [2368](https://github.com/Dao-AILab/flash-attention/pull/2368)
- 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

- `flash_attn/cute/flash_fwd_sm100.py`
- `tests/cute/test_flash_attn.py`

## Evidence Bundle

`evidence/pull-bundles/flash-attention/gh-2368`
