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playground [2008/11/02 12:43]
cabalistic angelegt 		playground [2015/08/23 13:59] (current)
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-  4 8 +<code>#include <cstring>
-  1 0 +
-  1 0 +
-  1 2 +
-  1 3 +
-  1 4 +
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 +#include <stdio.h>
 +
 +#include <stdlib.h>
 +
 +#include "cutil.h"
 +
 +#include "cudpp/cudpp.h"
 +
 +void cudppSort(unsigned int* data, unsigned int size, double* time, double* transferTime, bool merge)
 +
 +{
 +
 + unsigned int timer, transferTimer;
 +
 + cutCreateTimer(&timer);
 + cutCreateTimer(&transferTimer);
 +
 + cutStartTimer(transferTimer);
 +
 +
 + unsigned int* ddata1 = 0;
 +
 + unsigned int* ddata2 = 0;
 +
 + size_t memSize = size * sizeof(unsigned int);
 +
 +
 +
 + cudaMalloc((void**) &ddata1, memSize);
 +
 + cudaMalloc((void**) &ddata2, memSize);
 +
 + cudaMemcpy(ddata1, data, memSize, cudaMemcpyHostToDevice);
 +
 + cutStopTimer(transferTimer);
 +
 + cudaThreadSynchronize();
 + cutStartTimer(timer);
 +
 +
 +
 + CUDPPConfiguration config;
 +
 +
 +
 + if (merge)
 +
 + config.algorithm = CUDPP_SORT_RADIX;
 +
 + else
 +
 + config.algorithm = CUDPP_SORT_RADIX_GLOBAL;
 +
 +
 +
 + config.datatype = CUDPP_UINT;
 +
 +
 +
 + CUDPPHandle sortplan = 0;
 +
 + CUDPPResult result = cudppPlan(&sortplan, config, size, 1, 0);  
 +
 +
 +
 + cudppSort(sortplan, ddata2, ddata1, size);
 +
 + cudaThreadSynchronize();
 +
 + cutStopTimer(timer);
 +
 + cutStartTimer(transferTimer);
 +
 +
 +
 + cudaMemcpy(data, ddata2, memSize, cudaMemcpyDeviceToHost);  
 + cudaFree(ddata1);
 +
 + cudaFree(ddata2);
 + result = cudppDestroyPlan(sortplan);
 +
 + cutStopTimer(transferTimer);
 +
 + *time = cutGetTimerValue(timer);
 + *transferTime = cutGetTimerValue(transferTimer);
 +
 +
 + cutDeleteTimer(timer);
 +
 + cutDeleteTimer(transferTimer);
 +
 +}
 +
 +
 +int main(int argc, char *argv[]) 
 +
 +{
 +
 + int size = 10000000;
 + float* data = new float[size];
 + for (int i = 0; i < size; i++)
 + data[i] = float(rand());
 +
 + double time = 0.0;
 + double transferTime = 0.0;
 + printf("\nCUDPP Radix with sync..\n");
 + for (int i = 0; i < 5; i++)
 + {
 + cudppSort(data, size, &time, &transferTime);
 + printf("Time: %f, transfer time: %f\n", time, transferTime);
 + //time = 0.0; transferTime = 0.0;
 + }
 +
 + delete [] data;
 +
 + return 0;
 +
 +}</code>
playground.1225626229.txt.gz · Last modified: 2015/08/23 14:03 (external edit)

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