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
64 lines
2.2 KiB
Plaintext
64 lines
2.2 KiB
Plaintext
//===----------------------------------------------------------------------===//
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//
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// Part of CUDA Experimental in CUDA C++ Core Libraries,
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// under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#include <cuda/std/type_traits>
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#include <cuda/std/utility>
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#include <cuda/experimental/cufile.cuh>
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#include <cstdio>
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#include <stdexcept>
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#include <testing.cuh>
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#include "common.h"
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void test_register_native_handle()
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{
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constexpr auto filename = "cufile_driver_register_test_file";
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// 1. Check noexcept.
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STATIC_REQUIRE(!noexcept(cudax::cufile_driver.register_native_handle(cuda::std::declval<int>())));
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STATIC_REQUIRE(noexcept(cudax::cufile_driver.deregister_native_handle(cuda::std::declval<cudax::cufile_ref>())));
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// 2. Test return type.
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STATIC_REQUIRE(
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cuda::std::is_same_v<cudax::cufile_ref,
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decltype(cudax::cufile_driver.register_native_handle(cuda::std::declval<int>()))>);
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STATIC_REQUIRE(
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cuda::std::
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is_same_v<void, decltype(cudax::cufile_driver.deregister_native_handle(cuda::std::declval<cudax::cufile_ref>()))>);
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FILE* cfile = std::fopen(filename, "w");
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test_check_file_exists(filename);
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int fd = fileno(cfile);
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REQUIRE(fd != -1);
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// 3. Register a file handle. Should return a valid cuFile handle.
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cudax::cufile_ref file = cudax::cufile_driver.register_native_handle(fd);
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REQUIRE(file.get() != nullptr);
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// 4. Reregistering the same file handle should result in an cufile_error.
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CHECK_THROWS_AS((void) cudax::cufile_driver.register_native_handle(fd), cudax::cufile_error);
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// 5. Deregister the cuFile handles. Can be called multiple times.
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cudax::cufile_driver.deregister_native_handle(file);
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cudax::cufile_driver.deregister_native_handle(file); // should be fine
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test_remove_file(filename);
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}
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C2H_CCCLRT_TEST("cuFile driver register", "[cufile][driver]")
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{
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// 1. Test registering a native file handle.
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test_register_native_handle();
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}
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