56fd68e7dd
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
61 lines
2.5 KiB
Plaintext
61 lines
2.5 KiB
Plaintext
#include <thrust/detail/raw_reference_cast.h>
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#include <thrust/device_vector.h>
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#include <thrust/iterator/discard_iterator.h>
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#include <thrust/iterator/zip_iterator.h>
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#include <vector>
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#include <unittest/unittest.h>
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template <>
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inline constexpr bool thrust::detail::is_proxy_reference_v<std::vector<bool>::reference> = true;
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void TestRawReferenceCast()
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{
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using ::cuda::std::is_same_v;
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{
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[[maybe_unused]] int i = 42;
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[[maybe_unused]] const int ci = 42;
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(i)), int&>);
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(ci)), const int&>);
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}
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{
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[[maybe_unused]] thrust::host_vector<int> vec(1);
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(*vec.begin())), int&>);
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(*vec.cbegin())), const int&>);
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[[maybe_unused]] auto zip = thrust::make_zip_iterator(vec.begin(), vec.begin());
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static_assert(
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is_same_v<decltype(thrust::raw_reference_cast(*zip)), thrust::detail::tuple_of_iterator_references<int&, int&>>);
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[[maybe_unused]] auto zip2 = thrust::make_zip_iterator(zip, zip);
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static_assert(
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is_same_v<decltype(thrust::raw_reference_cast(*zip2)),
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thrust::detail::tuple_of_iterator_references<thrust::detail::tuple_of_iterator_references<int&, int&>,
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thrust::detail::tuple_of_iterator_references<int&, int&>>>);
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}
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{
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[[maybe_unused]] thrust::device_vector<int> vec(1);
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(*vec.begin())), int&>);
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(*vec.cbegin())), const int&>);
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[[maybe_unused]] auto zip = thrust::make_zip_iterator(vec.begin(), vec.begin());
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static_assert(
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is_same_v<decltype(thrust::raw_reference_cast(*zip)), thrust::detail::tuple_of_iterator_references<int&, int&>>);
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[[maybe_unused]] auto zip2 = thrust::make_zip_iterator(zip, zip);
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static_assert(
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is_same_v<decltype(thrust::raw_reference_cast(*zip2)),
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thrust::detail::tuple_of_iterator_references<thrust::detail::tuple_of_iterator_references<int&, int&>,
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thrust::detail::tuple_of_iterator_references<int&, int&>>>);
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}
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// proxy references
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{
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[[maybe_unused]] std::vector<bool> vb;
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static_assert(is_same_v<decltype(thrust::raw_reference_cast(vb[0])), std::vector<bool>::reference>);
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}
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}
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DECLARE_UNITTEST(TestRawReferenceCast);
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