mirror of
https://github.com/NVIDIA/cuda-samples.git
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122 lines
4.6 KiB
C++
122 lines
4.6 KiB
C++
/* Copyright (c) 2022, 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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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <cuda_runtime.h>
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#include <helper_functions.h>
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#include <helper_cuda.h>
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#include "mergeSort_common.h"
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////////////////////////////////////////////////////////////////////////////////
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// Test driver
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////////////////////////////////////////////////////////////////////////////////
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int main(int argc, char **argv) {
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uint *h_SrcKey, *h_SrcVal, *h_DstKey, *h_DstVal;
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uint *d_SrcKey, *d_SrcVal, *d_BufKey, *d_BufVal, *d_DstKey, *d_DstVal;
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StopWatchInterface *hTimer = NULL;
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const uint N = 4 * 1048576;
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const uint DIR = 1;
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const uint numValues = 65536;
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printf("%s Starting...\n\n", argv[0]);
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int dev = findCudaDevice(argc, (const char **)argv);
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if (dev == -1) {
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return EXIT_FAILURE;
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}
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printf("Allocating and initializing host arrays...\n\n");
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sdkCreateTimer(&hTimer);
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h_SrcKey = (uint *)malloc(N * sizeof(uint));
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h_SrcVal = (uint *)malloc(N * sizeof(uint));
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h_DstKey = (uint *)malloc(N * sizeof(uint));
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h_DstVal = (uint *)malloc(N * sizeof(uint));
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srand(2009);
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for (uint i = 0; i < N; i++) {
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h_SrcKey[i] = rand() % numValues;
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}
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fillValues(h_SrcVal, N);
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printf("Allocating and initializing CUDA arrays...\n\n");
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checkCudaErrors(cudaMalloc((void **)&d_DstKey, N * sizeof(uint)));
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checkCudaErrors(cudaMalloc((void **)&d_DstVal, N * sizeof(uint)));
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checkCudaErrors(cudaMalloc((void **)&d_BufKey, N * sizeof(uint)));
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checkCudaErrors(cudaMalloc((void **)&d_BufVal, N * sizeof(uint)));
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checkCudaErrors(cudaMalloc((void **)&d_SrcKey, N * sizeof(uint)));
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checkCudaErrors(cudaMalloc((void **)&d_SrcVal, N * sizeof(uint)));
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checkCudaErrors(
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cudaMemcpy(d_SrcKey, h_SrcKey, N * sizeof(uint), cudaMemcpyHostToDevice));
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checkCudaErrors(
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cudaMemcpy(d_SrcVal, h_SrcVal, N * sizeof(uint), cudaMemcpyHostToDevice));
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printf("Initializing GPU merge sort...\n");
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initMergeSort();
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printf("Running GPU merge sort...\n");
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checkCudaErrors(cudaDeviceSynchronize());
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sdkResetTimer(&hTimer);
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sdkStartTimer(&hTimer);
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mergeSort(d_DstKey, d_DstVal, d_BufKey, d_BufVal, d_SrcKey, d_SrcVal, N, DIR);
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checkCudaErrors(cudaDeviceSynchronize());
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sdkStopTimer(&hTimer);
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printf("Time: %f ms\n", sdkGetTimerValue(&hTimer));
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printf("Reading back GPU merge sort results...\n");
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checkCudaErrors(
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cudaMemcpy(h_DstKey, d_DstKey, N * sizeof(uint), cudaMemcpyDeviceToHost));
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checkCudaErrors(
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cudaMemcpy(h_DstVal, d_DstVal, N * sizeof(uint), cudaMemcpyDeviceToHost));
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printf("Inspecting the results...\n");
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uint keysFlag = validateSortedKeys(h_DstKey, h_SrcKey, 1, N, numValues, DIR);
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uint valuesFlag = validateSortedValues(h_DstKey, h_DstVal, h_SrcKey, 1, N);
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printf("Shutting down...\n");
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closeMergeSort();
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sdkDeleteTimer(&hTimer);
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checkCudaErrors(cudaFree(d_SrcVal));
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checkCudaErrors(cudaFree(d_SrcKey));
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checkCudaErrors(cudaFree(d_BufVal));
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checkCudaErrors(cudaFree(d_BufKey));
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checkCudaErrors(cudaFree(d_DstVal));
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checkCudaErrors(cudaFree(d_DstKey));
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free(h_DstVal);
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free(h_DstKey);
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free(h_SrcVal);
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free(h_SrcKey);
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exit((keysFlag && valuesFlag) ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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