---
id: pr-flash-attention-2218
repo: Dao-AILab/flash-attention
pr: 2218
title: '[Ai-assisted] CLC work stealing'
author: drisspg
date: '2026-03-28'
url: https://github.com/Dao-AILab/flash-attention/pull/2218
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- FA4
- blackwell
- cute dsl
- scheduler_autotune
- sm90
- varlen
techniques:
- autotuning
- cache-policy
- tile-scheduling
hardware_features:
- blackwell
- clc
- hopper
kernel_types:
- scheduler
languages:
- cute-dsl
captured_at: '2026-05-16'
status: merged
merge_sha: 98024f90f887917e05070f867503e87fe2bba44c
inclusion_reason: Treat scheduler/autotune configs as shape-specific evidence; replay benchmark shapes before generalizing.
changed_paths:
- flash_attn/cute/block_sparsity.py
- flash_attn/cute/cache_utils.py
- flash_attn/cute/flash_fwd_sm100.py
- flash_attn/cute/interface.py
- flash_attn/cute/tile_scheduler.py
- flash_attn/cute/utils.py
- tests/cute/conftest.py
- tests/cute/test_clc_fuzz.py
artifact_dir: evidence/pull-bundles/flash-attention/gh-2218
head_ref_oid: a0fa3073436b229988fb2f3b07108848b5e85125
---
# [Ai-assisted] CLC work stealing

- Repository: `Dao-AILab/flash-attention`
- PR: [2218](https://github.com/Dao-AILab/flash-attention/pull/2218)
- Decision: `Treat scheduler/autotune configs as shape-specific evidence; replay benchmark shapes before generalizing.`
- Reason: Treat scheduler/autotune configs as shape-specific evidence; replay benchmark shapes before generalizing.

## Changed Paths

- `flash_attn/cute/block_sparsity.py`
- `flash_attn/cute/cache_utils.py`
- `flash_attn/cute/flash_fwd_sm100.py`
- `flash_attn/cute/interface.py`
- `flash_attn/cute/tile_scheduler.py`
- `flash_attn/cute/utils.py`
- `tests/cute/conftest.py`
- `tests/cute/test_clc_fuzz.py`

## Evidence Bundle

`evidence/pull-bundles/flash-attention/gh-2218`
