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https://github.com/NVIDIA/cuda-samples.git
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129 lines
4.4 KiB
Plaintext
129 lines
4.4 KiB
Plaintext
/* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef _WIN32
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#define WINDOWS_LEAN_AND_MEAN
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#define NOMINMAX
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#include <windows.h>
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#else
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#include <sys/utsname.h>
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#endif
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// Includes, system
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#include <stdio.h>
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#include <cassert>
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// Includes CUDA
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#include <cuda_runtime.h>
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// Utilities and timing functions
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#include <helper_functions.h> // includes cuda.h and cuda_runtime_api.h
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// CUDA helper functions
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#include <helper_cuda.h> // helper functions for CUDA error check
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const char *sampleName = "simpleAssert";
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////////////////////////////////////////////////////////////////////////////////
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// Auto-Verification Code
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bool testResult = true;
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////////////////////////////////////////////////////////////////////////////////
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// Kernels
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////////////////////////////////////////////////////////////////////////////////
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//! Tests assert function.
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//! Thread whose id > N will print assertion failed error message.
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////////////////////////////////////////////////////////////////////////////////
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__global__ void testKernel(int N) {
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int gtid = blockIdx.x * blockDim.x + threadIdx.x;
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assert(gtid < N);
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}
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////////////////////////////////////////////////////////////////////////////////
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// Declaration, forward
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void runTest(int argc, char **argv);
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////////////////////////////////////////////////////////////////////////////////
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// Program main
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////////////////////////////////////////////////////////////////////////////////
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int main(int argc, char **argv) {
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printf("%s starting...\n", sampleName);
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runTest(argc, argv);
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printf("%s completed, returned %s\n", sampleName,
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testResult ? "OK" : "ERROR!");
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exit(testResult ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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void runTest(int argc, char **argv) {
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int Nblocks = 2;
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int Nthreads = 32;
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cudaError_t error;
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#ifndef _WIN32
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utsname OS_System_Type;
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uname(&OS_System_Type);
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printf("OS_System_Type.release = %s\n", OS_System_Type.release);
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if (!strcasecmp(OS_System_Type.sysname, "Darwin")) {
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printf("simpleAssert is not current supported on Mac OSX\n\n");
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exit(EXIT_SUCCESS);
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} else {
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printf("OS Info: <%s>\n\n", OS_System_Type.version);
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}
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#endif
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// This will pick the best possible CUDA capable device
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findCudaDevice(argc, (const char **)argv);
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// Kernel configuration, where a one-dimensional
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// grid and one-dimensional blocks are configured.
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dim3 dimGrid(Nblocks);
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dim3 dimBlock(Nthreads);
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printf("Launch kernel to generate assertion failures\n");
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testKernel<<<dimGrid, dimBlock>>>(60);
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// Synchronize (flushes assert output).
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printf("\n-- Begin assert output\n\n");
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error = cudaDeviceSynchronize();
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printf("\n-- End assert output\n\n");
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// Check for errors and failed asserts in asynchronous kernel launch.
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if (error == cudaErrorAssert) {
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printf(
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"Device assert failed as expected, "
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"CUDA error message is: %s\n\n",
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cudaGetErrorString(error));
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}
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testResult = error == cudaErrorAssert;
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}
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