---
id: pr-cccl-cub-3611
repo: NVIDIA/cccl
pr: 3611
title: Add b200 tunings for radix_sort.keys
author: bernhardmgruber
date: '2025-01-31'
url: https://github.com/NVIDIA/cccl/pull/3611
source_category: upstream-code
architectures:
- sm100
tags:
- sm100
techniques: []
hardware_features:
- blackwell
kernel_types:
- sort
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 22553034318522341b047fa4b57a0f4be386d678
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cub/cub/device/dispatch/tuning/tuning_radix_sort.cuh
artifact_dir: evidence/pull-bundles/cccl-cub/gh-3611
head_ref_oid: 8783237c35396843988e419cc92504b09afe673a
---
# Add b200 tunings for radix_sort.keys

- Repository: `NVIDIA/cccl`
- PR: [3611](https://github.com/NVIDIA/cccl/pull/3611)
- 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_radix_sort.cuh`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-3611`
