1 //---------------------------------------------------------------------------// 2 // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com> 3 // 4 // Distributed under the Boost Software License, Version 1.0 5 // See accompanying file LICENSE_1_0.txt or copy at 6 // http://www.boost.org/LICENSE_1_0.txt 7 // 8 // See http://boostorg.github.com/compute for more information. 9 //---------------------------------------------------------------------------// 10 11 #include <algorithm> 12 #include <cstdlib> 13 #include <iostream> 14 15 #include <thrust/copy.h> 16 #include <thrust/device_vector.h> 17 #include <thrust/generate.h> 18 #include <thrust/host_vector.h> 19 #include <thrust/unique.h> 20 21 #include "perf.hpp" 22 rand_int()23int rand_int() 24 { 25 return static_cast<int>((rand() / double(RAND_MAX)) * 25.0); 26 } 27 main(int argc,char * argv[])28int main(int argc, char *argv[]) 29 { 30 perf_parse_args(argc, argv); 31 32 std::cout << "size: " << PERF_N << std::endl; 33 thrust::host_vector<int> h_vec(PERF_N); 34 std::generate(h_vec.begin(), h_vec.end(), rand_int); 35 36 thrust::device_vector<int> d_vec(PERF_N); 37 38 perf_timer t; 39 for(size_t trial = 0; trial < PERF_TRIALS; trial++){ 40 d_vec = h_vec; 41 42 t.start(); 43 thrust::unique(d_vec.begin(), d_vec.end()); 44 cudaDeviceSynchronize(); 45 t.stop(); 46 } 47 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl; 48 49 return 0; 50 } 51