---
id: pr-flash-attention-1393
repo: Dao-AILab/flash-attention
pr: 1393
title: Add hipBLAS/cuBLAS distinction in benchmark_gemm.py
author: garrettbyrd
date: '2025-01-09'
url: https://github.com/Dao-AILab/flash-attention/pull/1393
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
techniques: []
hardware_features: []
kernel_types:
- attention
- gemm
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: a69fc21595421f00a3126f851db17edcaac8cd6d
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- benchmarks/benchmark_gemm.py
artifact_dir: evidence/pull-bundles/flash-attention/gh-1393
head_ref_oid: 82ff0a7bc1c5ab1bc4cdf69f70809c2e1c211ba2
---
# Add hipBLAS/cuBLAS distinction in benchmark_gemm.py

- Repository: `Dao-AILab/flash-attention`
- PR: [1393](https://github.com/Dao-AILab/flash-attention/pull/1393)
- 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

- `benchmarks/benchmark_gemm.py`

## Evidence Bundle

`evidence/pull-bundles/flash-attention/gh-1393`
