dedf08166a
Added 863 files from NVIDIA/cccl sparse checkout: - c2h/ (27 files): Catch2 test helpers — generators, validators, runner - nvbench_helper/ (10 files): Benchmark harness utilities - cmake/ (29 files): CMake presets and build helpers - cudax/ (794 files): Experimental CUDA extensions - AGENTS.md: NVIDIA's official AI agent instructions for CCCL - CMakePresets.json: Standardized build configurations - cccl-version.json: Version tracking Also added CCCL_ASSET_MAP.md mapping all 4295 CCCL files to competition value and PRD items. cccl_upstream now covers 100% of competition-critical assets: - 27 tuning headers (SM80/90/100 benchmark data) - 32 dispatch headers (algorithm implementations) - 60 Thrust examples (correctness verification) - 217 CUB Catch2 tests (regression matrix) - 153 CUB benchmarks (parameter space search) - 18 CUB examples (API verification) - 27 test helpers + benchmark harness - 794 cudax experimental extensions
126 lines
3.9 KiB
Plaintext
126 lines
3.9 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) 2024 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#include <cuda/experimental/execution.cuh>
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#include "testing.cuh"
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namespace ex = cudax::execution;
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__host__ __device__ bool _on_device() noexcept
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{
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NV_IF_ELSE_TARGET(NV_IS_HOST, //
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({ return false; }),
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({ return true; }));
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}
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auto const main_thread_id = ::std::this_thread::get_id();
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void simple_start_on_thread_test()
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{
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ex::thread_context ctx;
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auto sch = ctx.get_scheduler();
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auto sndr = ex::on(sch, ex::just() | ex::then([] {
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CHECK(::std::this_thread::get_id() != main_thread_id);
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}))
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| ex::then([]() -> int {
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CHECK(::std::this_thread::get_id() == main_thread_id);
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return 42;
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});
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auto [result] = ex::sync_wait(std::move(sndr)).value();
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CHECK(result == 42);
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}
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void simple_continue_on_thread_test()
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{
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ex::thread_context ctx;
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auto sch = ctx.get_scheduler();
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auto sndr = ex::just() | ex::on(sch, ex::then([] {
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CHECK(::std::this_thread::get_id() != main_thread_id);
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}))
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| ex::then([]() -> int {
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CHECK(::std::this_thread::get_id() == main_thread_id);
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return 42;
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});
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auto [result] = ex::sync_wait(std::move(sndr)).value();
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CHECK(result == 42);
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}
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void simple_start_on_stream_test()
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{
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cudax::stream str{cuda::device_ref(0)};
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auto sch = cudax::stream_ref{str};
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auto sndr = ex::on(sch, ex::just(42) | ex::then([] __host__ __device__(int i) noexcept -> int {
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return _on_device() ? i : -i;
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}))
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| ex::then([] __host__ __device__(int i) noexcept -> int {
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return _on_device() ? -1 : i;
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});
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auto [result] = ex::sync_wait(std::move(sndr)).value();
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CHECK(result == 42);
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}
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void simple_continue_on_stream_test()
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{
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cudax::stream str{cuda::device_ref(0)};
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auto sch = cudax::stream_ref{str};
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auto sndr = ex::just(42) | ex::on(sch, ex::then([] __host__ __device__(int i) noexcept -> int {
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return _on_device() ? i : -i;
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}))
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| ex::then([] __host__ __device__(int i) noexcept -> int {
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return _on_device() ? -1 : i;
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});
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auto [result] = ex::sync_wait(std::move(sndr)).value();
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CHECK(result == 42);
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}
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void test_continues_on_updates_env()
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{
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ex::thread_context ctx;
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auto sch = ctx.get_scheduler();
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auto sndr = ex::just() | ex::on(sch, ex::let_value([] {
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return ex::read_env(ex::get_scheduler);
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}))
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| ex::then([](auto sch2) -> int {
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STATIC_REQUIRE(cuda::std::same_as<decltype(sch2), decltype(sch)>);
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return 42;
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});
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auto [result] = ex::sync_wait(std::move(sndr)).value();
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CHECK(result == 42);
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}
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namespace
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{
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C2H_TEST("simple on(sch, sndr) thread test", "[on]")
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{
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simple_start_on_thread_test();
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}
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C2H_TEST("simple on(sndr, sch, closure) thread test", "[on]")
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{
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simple_continue_on_thread_test();
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}
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C2H_TEST("simple on(sch, sndr) stream test", "[on][stream]")
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{
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simple_start_on_stream_test();
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}
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C2H_TEST("simple on(sndr, sch, closure) stream test", "[on][stream]")
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{
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simple_continue_on_stream_test();
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}
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C2H_TEST("test that on(sndr, sch, closure) updates the env for closure", "[on][stream]")
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{
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test_continues_on_updates_env();
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}
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} // namespace
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