---
id: pr-cccl-cub-7908
repo: NVIDIA/cccl
pr: 7908
title: Add env RLE
author: gonidelis
date: '2026-03-10'
url: https://github.com/NVIDIA/cccl/pull/7908
source_category: upstream-code
architectures:
- sm100
tags:
- reduction
techniques: []
hardware_features: []
kernel_types:
- reduction
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: defbe55b561940abca29d855a3ce6bb8d393b449
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cub/cub/device/device_run_length_encode.cuh
- cub/cub/device/device_select.cuh
- cub/test/catch2_test_device_run_length_encode_env.cu
- cub/test/catch2_test_device_run_length_encode_env_api.cu
artifact_dir: evidence/pull-bundles/cccl-cub/gh-7908
head_ref_oid: c30d037f6bd410b807695d5854a9a7d95c0c5f7a
---
# Add env RLE

- Repository: `NVIDIA/cccl`
- PR: [7908](https://github.com/NVIDIA/cccl/pull/7908)
- 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_run_length_encode.cuh`
- `cub/cub/device/device_select.cuh`
- `cub/test/catch2_test_device_run_length_encode_env.cu`
- `cub/test/catch2_test_device_run_length_encode_env_api.cu`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-7908`
