---
id: pr-cccl-cub-7924
repo: NVIDIA/cccl
pr: 7924
title: Implement parallel `cuda::std::reverse`
author: miscco
date: '2026-03-10'
url: https://github.com/NVIDIA/cccl/pull/7924
source_category: upstream-code
architectures:
- sm100
tags:
- blackwell
techniques: []
hardware_features:
- blackwell
kernel_types: []
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 04b0902c1dee57db74d59bdc8128673950741fde
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- libcudacxx/benchmarks/bench/reverse/basic.cu
- libcudacxx/benchmarks/bench/reverse_copy/basic.cu
- libcudacxx/include/cuda/std/__pstl/reverse.h
- libcudacxx/include/cuda/std/__pstl/reverse_copy.h
- libcudacxx/include/cuda/std/__pstl_algorithm
- libcudacxx/test/libcudacxx/std/algorithms/alg.modifying/alg.reverse/pstl_reverse.cu
- libcudacxx/test/libcudacxx/std/algorithms/alg.modifying/alg.reverse/pstl_reverse_copy.cu
artifact_dir: evidence/pull-bundles/cccl-cub/gh-7924
head_ref_oid: e420fcbf4337b0bbdd8070519b2046a6d7940714
---
# Implement parallel `cuda::std::reverse`

- Repository: `NVIDIA/cccl`
- PR: [7924](https://github.com/NVIDIA/cccl/pull/7924)
- 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

- `libcudacxx/benchmarks/bench/reverse/basic.cu`
- `libcudacxx/benchmarks/bench/reverse_copy/basic.cu`
- `libcudacxx/include/cuda/std/__pstl/reverse.h`
- `libcudacxx/include/cuda/std/__pstl/reverse_copy.h`
- `libcudacxx/include/cuda/std/__pstl_algorithm`
- `libcudacxx/test/libcudacxx/std/algorithms/alg.modifying/alg.reverse/pstl_reverse.cu`
- `libcudacxx/test/libcudacxx/std/algorithms/alg.modifying/alg.reverse/pstl_reverse_copy.cu`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-7924`
