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project_6/cccl_upstream/cub/test/test_cdp_variant_state.cu
EngineX CI 56fd68e7dd [INFRA] Import NVIDIA/CCCL upstream as optimization reference library
CCCL (CUDA C++ Core Libraries) provides:
- CUB: device/block/warp-level GPU primitives (reduce, scan, sort, topk)
- Thrust: high-level parallel algorithms (transform_reduce, sort, scan)
- libcudacxx: CUDA C++ standard library (atomics, barriers, memory)
- cudax: experimental features (memory resources, allocators)
- Tuning policies: per-SM hardware-specific algorithm parameters

Competition optimization vectors mapped to CCCL:
- Output TPS (83% weight): warp_reduce, block_reduce, device_topk
- Input TPS (14% weight): device_scan, block_load, prefetch
- Cache TPS (3% weight): prefix caching strategy patterns
- Memory (0.9 util): pooled/cached/buddy allocators

Source: https://github.com/NVIDIA/cccl (shallow clone, HEAD only)
License: Apache-2.0
2026-07-30 09:35:51 +00:00

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/*
* Copyright 2022 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cub/detail/detect_cuda_runtime.cuh>
#include <cstdlib>
int main()
{
// This test just checks that RDC is enabled and detected properly when using
// the %PARAM% system to request CDP support (see the README.md file in
// this directory).
// %PARAM% TEST_LAUNCH lid 0:1:2
#ifdef CUB_RDC_ENABLED
return (TEST_LAUNCH == 1) ? EXIT_SUCCESS : EXIT_FAILURE;
#else
return (TEST_LAUNCH == 0 || TEST_LAUNCH == 2) ? EXIT_SUCCESS : EXIT_FAILURE;
#endif
}