---
id: pr-cccl-cub-8611
repo: NVIDIA/cccl
pr: 8611
title: 'Add B200 tuning for warpspeed_scan '
author: gonidelis
date: '2026-04-24'
url: https://github.com/NVIDIA/cccl/pull/8611
source_category: upstream-code
architectures:
- sm100
tags:
- blackwell
- scan
- sm100
techniques:
- warp-specialization
hardware_features:
- blackwell
kernel_types:
- scan
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: a8d7686efd25169619d25ca1b792f0ac7abf8376
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cub/cub/device/dispatch/tuning/tuning_scan.cuh
artifact_dir: evidence/pull-bundles/cccl-cub/gh-8611
head_ref_oid: cc190ae6d13ce199a05a2259e410b448a6285288
---
# Add B200 tuning for warpspeed_scan 

- Repository: `NVIDIA/cccl`
- PR: [8611](https://github.com/NVIDIA/cccl/pull/8611)
- 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

- `cub/cub/device/dispatch/tuning/tuning_scan.cuh`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-8611`
