---
id: pr-cccl-cub-7805
repo: NVIDIA/cccl
pr: 7805
title: Forward policy hub from `dispatch_streaming_arg_reduce_t` to `reduce::dispatch`
author: bernhardmgruber
date: '2026-02-26'
url: https://github.com/NVIDIA/cccl/pull/7805
source_category: upstream-code
architectures:
- sm100
tags:
- benchmark_test
- memory_primitives
- reduce
- scheduler_autotune
techniques:
- autotuning
- tile-scheduling
hardware_features: []
kernel_types:
- memory
- scheduler
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: f927bde1fd77c07d090b0aa7357fc7ada5838ab0
inclusion_reason: 'Transfer primitive policy carefully: coalescing, shared-memory staging, partial tiles, and determinism are part of the contract.'
changed_paths:
- cub/benchmarks/bench/reduce/arg_extrema.cu
- cub/cub/device/dispatch/dispatch_streaming_reduce.cuh
- cub/cub/device/dispatch/tuning/tuning_reduce.cuh
artifact_dir: evidence/pull-bundles/cccl-cub/gh-7805
head_ref_oid: b189da88f6bbaa5b3e27079efcb24a226070d47d
---
# Forward policy hub from `dispatch_streaming_arg_reduce_t` to `reduce::dispatch`

- Repository: `NVIDIA/cccl`
- PR: [7805](https://github.com/NVIDIA/cccl/pull/7805)
- Decision: `Transfer primitive policy carefully: coalescing, shared-memory staging, partial tiles, and determinism are part of the contract.`
- Reason: Transfer primitive policy carefully: coalescing, shared-memory staging, partial tiles, and determinism are part of the contract.

## Changed Paths

- `cub/benchmarks/bench/reduce/arg_extrema.cu`
- `cub/cub/device/dispatch/dispatch_streaming_reduce.cuh`
- `cub/cub/device/dispatch/tuning/tuning_reduce.cuh`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-7805`
