Sort host.cu

`` #include <thrust/host_vector.h> #include <thrust/generate.h> #include <thrust/sort.h> #include #include

#include <cuda.h>

int main(int argc, char* argv[]) { size_t N = 10000; // Default value cudaEvent_t start; cudaEvent_t end; float elapsed_time;

cudaEventCreate(&start); cudaEventCreate(&end);

// generate 32M random numbers serially if (argc > 1) { N = atoi(argv[1]); std::cout << "Using number of elements = " << N << std::endl; }

thrust::host_vector h_vec(N); std::generate(h_vec.begin(), h_vec.end(), rand);

cudaEventRecord(start,0);

// starting sorting data on the host thrust::sort(h_vec.begin(), h_vec.end()); // finished sorting data on the host

cudaEventSynchronize(end); cudaEventRecord(end,0); cudaEventSynchronize(end); cudaEventElapsedTime(&elapsed_time, start, end);

std::cout << "host sort took " << elapsed_time << " milliseconds" << std::endl;

// output smallest/largest value std::cout << "Smallest value is\n" << h_vec[0] << std::endl; std::cout << "Largest value is\n" << h_vec[h_vec.size()-1] << std::endl;

return 0; } ``