---
id: pr-cccl-cub-8352
repo: NVIDIA/cccl
pr: 8352
title: Apply some random warpspeed tunings
author: bernhardmgruber
date: '2026-04-14'
url: https://github.com/NVIDIA/cccl/pull/8352
source_category: upstream-code
architectures:
- sm100
tags:
- arch_pipeline
- memory_primitives
- scan
- scheduler_autotune
- warpspeed scan
techniques:
- autotuning
- pipeline-stages
- tile-scheduling
- warp-specialization
hardware_features: []
kernel_types:
- memory
- runtime
- scan
- scheduler
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 4a45c18bef5bc9ba1a792fbb1a0371539a80bb10
inclusion_reason: 'Transfer primitive policy carefully: coalescing, shared-memory staging, partial tiles, and determinism are part of the contract.'
changed_paths:
- cub/cub/device/dispatch/tuning/tuning_scan.cuh
artifact_dir: evidence/pull-bundles/cccl-cub/gh-8352
head_ref_oid: e6c692bd21897f455b6149d3d91120773a1c6fb1
---
# Apply some random warpspeed tunings

- Repository: `NVIDIA/cccl`
- PR: [8352](https://github.com/NVIDIA/cccl/pull/8352)
- 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/cub/device/dispatch/tuning/tuning_scan.cuh`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-8352`
