---
id: pr-cccl-cub-8286
repo: NVIDIA/cccl
pr: 8286
title: Add nonstable env `DeviceSegmentedSort::Pairs`  2/2
author: gonidelis
date: '2026-04-14'
url: https://github.com/NVIDIA/cccl/pull/8286
source_category: upstream-code
architectures:
- sm100
tags:
- sort
techniques: []
hardware_features: []
kernel_types:
- sort
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: faf620e5a8256efc9f84a92a10b7389782bbf1ce
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cub/cub/device/device_segmented_sort.cuh
- cub/test/catch2_test_device_segmented_sort_pairs_env.cu
- cub/test/catch2_test_device_segmented_sort_pairs_env_api.cu
artifact_dir: evidence/pull-bundles/cccl-cub/gh-8286
head_ref_oid: 4f95dbd8493959444bf8a46d15550fe2fb3aedaa
---
# Add nonstable env `DeviceSegmentedSort::Pairs`  2/2

- Repository: `NVIDIA/cccl`
- PR: [8286](https://github.com/NVIDIA/cccl/pull/8286)
- 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/device_segmented_sort.cuh`
- `cub/test/catch2_test_device_segmented_sort_pairs_env.cu`
- `cub/test/catch2_test_device_segmented_sort_pairs_env_api.cu`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-8286`
