---
id: pr-flashinfer-1758
repo: flashinfer-ai/flashinfer
pr: 1758
title: Fix sink attention accuracy regression, add sink test and cleanup.
author: weireweire
date: '2025-09-25'
url: https://github.com/flashinfer-ai/flashinfer/pull/1758
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 4fe837f0a0c391a3af2c4d524aa579d12bce5c7b
inclusion_reason: defer
changed_paths:
- flashinfer/artifacts.py
- tests/test_attention_sink_blackwell.py
- tests/test_trtllm_gen_attention.py
artifact_dir: evidence/pull-bundles/flashinfer/gh-1758
head_ref_oid: 707f99870d64f9a3cfad8deabe709e5793c8fe34
---
# Fix sink attention accuracy regression, add sink test and cleanup.

- Repository: `flashinfer-ai/flashinfer`
- PR: [1758](https://github.com/flashinfer-ai/flashinfer/pull/1758)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `flashinfer/artifacts.py`
- `tests/test_attention_sink_blackwell.py`
- `tests/test_trtllm_gen_attention.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1758`
