---
id: pr-cccl-cub-8067
repo: NVIDIA/cccl
pr: 8067
title: Use nv atomics in grid sync
author: davebayer
date: '2026-05-11'
url: https://github.com/NVIDIA/cccl/pull/8067
source_category: upstream-code
architectures:
- sm90
tags:
- hopper
- sm90
techniques: []
hardware_features:
- hopper
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 4d130e6d5bc91430dfabf28f586da5cbda20666d
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- cudax/include/cuda/experimental/__group/this_group.cuh
artifact_dir: evidence/pull-bundles/cccl-cub/gh-8067
head_ref_oid: 8be6df4e5589707758e41c958653e24b8ba8c759
---
# Use nv atomics in grid sync

- Repository: `NVIDIA/cccl`
- PR: [8067](https://github.com/NVIDIA/cccl/pull/8067)
- 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

- `cudax/include/cuda/experimental/__group/this_group.cuh`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-8067`
