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project_6/cccl_upstream/cudax/test/cufile/open_mode.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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//===----------------------------------------------------------------------===//
//
// Part of CUDA Experimental in CUDA C++ Core Libraries,
// under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#include <cuda/std/type_traits>
#include <cuda/std/utility>
#include <cuda/experimental/cufile.cuh>
#include <testing.cuh>
C2H_CCCLRT_TEST("cuFile open mode", "[cufile][open_mode]")
{
// 1. Test cufile_open_flags properties
STATIC_REQUIRE(cuda::std::is_scoped_enum_v<cudax::cufile_open_mode>);
STATIC_REQUIRE(cuda::std::is_same_v<unsigned, cuda::std::underlying_type_t<cudax::cufile_open_mode>>);
// 2. Test cufile_oepn_flags values
STATIC_REQUIRE(cuda::std::to_underlying(cudax::cufile_open_mode::in) == 0x01u);
STATIC_REQUIRE(cuda::std::to_underlying(cudax::cufile_open_mode::out) == 0x02u);
STATIC_REQUIRE(cuda::std::to_underlying(cudax::cufile_open_mode::trunc) == 0x04u);
STATIC_REQUIRE(cuda::std::to_underlying(cudax::cufile_open_mode::noreplace) == 0x08u);
STATIC_REQUIRE(cuda::std::to_underlying(cudax::cufile_open_mode::direct) == 0x10u);
// 3. Test operator|(cufile_open_flags, cufile_open_flags)
{
constexpr auto lhs = cudax::cufile_open_mode::in;
constexpr auto rhs = cudax::cufile_open_mode::out;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode, decltype(lhs | rhs)>);
STATIC_REQUIRE(noexcept(lhs | rhs));
STATIC_REQUIRE(cuda::std::to_underlying(lhs | rhs) == 0x3u);
STATIC_REQUIRE(cuda::std::to_underlying(lhs | lhs) == 0x1u);
}
// 3. Test operator=|(cufile_open_flags&, cufile_open_flags)
{
auto lhs = cudax::cufile_open_mode::in;
auto rhs = cudax::cufile_open_mode::out;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode&, decltype(lhs |= rhs)>);
STATIC_REQUIRE(noexcept(lhs |= rhs));
REQUIRE(cuda::std::to_underlying(lhs |= cudax::cufile_open_mode::in) == 0x1u);
REQUIRE(cuda::std::to_underlying(lhs |= rhs) == 0x3u);
}
// 4. Test operator&(cufile_open_flags, cufile_open_flags)
{
constexpr auto lhs = cudax::cufile_open_mode::in;
constexpr auto rhs = cudax::cufile_open_mode::out;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode, decltype(lhs & rhs)>);
STATIC_REQUIRE(noexcept(lhs & rhs));
STATIC_REQUIRE(cuda::std::to_underlying(lhs & lhs) == 0x1u);
STATIC_REQUIRE(cuda::std::to_underlying(lhs & rhs) == 0x0u);
}
// 5. Test operator=&(cufile_open_flags&, cufile_open_flags)
{
auto lhs = cudax::cufile_open_mode::in;
auto rhs = cudax::cufile_open_mode::out;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode&, decltype(lhs &= rhs)>);
STATIC_REQUIRE(noexcept(lhs &= rhs));
REQUIRE(cuda::std::to_underlying(lhs &= cudax::cufile_open_mode::in) == 0x1u);
REQUIRE(cuda::std::to_underlying(lhs &= rhs) == 0x0u);
}
// 5. Test operator^(cufile_open_flags, cufile_open_flags)
{
constexpr auto lhs = cudax::cufile_open_mode::in;
constexpr auto rhs = cudax::cufile_open_mode::out;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode, decltype(lhs ^ rhs)>);
STATIC_REQUIRE(noexcept(lhs ^ rhs));
STATIC_REQUIRE(cuda::std::to_underlying(lhs ^ lhs) == 0x0u);
STATIC_REQUIRE(cuda::std::to_underlying(lhs ^ rhs) == 0x3u);
}
// 6. Test operator=^(cufile_open_flags&, cufile_open_flags)
{
auto lhs = cudax::cufile_open_mode::in;
auto rhs = cudax::cufile_open_mode::out;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode&, decltype(lhs ^= rhs)>);
STATIC_REQUIRE(noexcept(lhs ^= rhs));
REQUIRE(cuda::std::to_underlying(lhs ^= rhs) == 0x3u);
REQUIRE(cuda::std::to_underlying(lhs ^= cudax::cufile_open_mode::in) == 0x2u);
}
// 5. Test operator~(cufile_open_flags)
{
constexpr auto v = cudax::cufile_open_mode::in;
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile_open_mode, decltype(~v)>);
STATIC_REQUIRE(noexcept(~v));
STATIC_REQUIRE(cuda::std::to_underlying(~v) == ~0x1u);
}
}