---
id: pr-cccl-cub-7692
repo: NVIDIA/cccl
pr: 7692
title: Implement `WarpReduceBatched`
author: pauleonix
date: '2026-04-21'
url: https://github.com/NVIDIA/cccl/pull/7692
source_category: upstream-code
architectures:
- sm100
tags:
- benchmark kernel
- reduction
- warp
techniques:
- warp-specialization
hardware_features: []
kernel_types:
- reduction
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 1411f47263429ad9c8925f9bba45764e942a3aef
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cub/cub/thread/thread_operators.cuh
- cub/cub/warp/specializations/warp_reduce_batched_wspro.cuh
- cub/cub/warp/warp_reduce_batched.cuh
- cub/test/warp/catch2_test_warp_reduce_batched.cu
- cub/test/warp/catch2_test_warp_reduce_batched_api.cu
- docs/cub/api_docs/warp_wide.rst
artifact_dir: evidence/pull-bundles/cccl-cub/gh-7692
head_ref_oid: bb3aa8874bd7aaf8a5d19bb85929320acac564ab
---
# Implement `WarpReduceBatched`

- Repository: `NVIDIA/cccl`
- PR: [7692](https://github.com/NVIDIA/cccl/pull/7692)
- 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/thread/thread_operators.cuh`
- `cub/cub/warp/specializations/warp_reduce_batched_wspro.cuh`
- `cub/cub/warp/warp_reduce_batched.cuh`
- `cub/test/warp/catch2_test_warp_reduce_batched.cu`
- `cub/test/warp/catch2_test_warp_reduce_batched_api.cu`
- `docs/cub/api_docs/warp_wide.rst`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-7692`
