123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 |
- //---------------------------------------------------------------------------//
- // Copyright (c) 2015 Jakub Szuppe <j.szuppe@gmail.com>
- //
- // Distributed under the Boost Software License, Version 1.0
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- //
- // See http://boostorg.github.com/compute for more information.
- //---------------------------------------------------------------------------//
- #include <iostream>
- #include <algorithm>
- #include <vector>
- #include <bolt/cl/copy.h>
- #include <bolt/cl/device_vector.h>
- #include <bolt/cl/max_element.h>
- #include "perf.hpp"
- int rand_int()
- {
- return static_cast<int>(rand() % 10000000);
- }
- int main(int argc, char *argv[])
- {
- perf_parse_args(argc, argv);
- std::cout << "size: " << PERF_N << std::endl;
- bolt::cl::control ctrl = bolt::cl::control::getDefault();
- ::cl::Device device = ctrl.getDevice();
- std::cout << "device: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
- // create host vector
- std::vector<int> host_vec = generate_random_vector<int>(PERF_N);
- // create device vectors
- bolt::cl::device_vector<int> device_vec(PERF_N);
- // transfer data to the device
- bolt::cl::copy(host_vec.begin(), host_vec.end(), device_vec.begin());
- bolt::cl::device_vector<int>::iterator max_iter = device_vec.begin();
- perf_timer t;
- for(size_t trial = 0; trial < PERF_TRIALS; trial++){
- t.start();
- max_iter = bolt::cl::max_element(device_vec.begin(), device_vec.end());
- t.stop();
- }
- int device_max = *max_iter;
- std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl;
- std::cout << "max: " << device_max << std::endl;
- // verify max is correct
- int host_max = *std::max_element(host_vec.begin(), host_vec.end());
- if(device_max != host_max){
- std::cout << "ERROR: "
- << "device_max (" << device_max << ") "
- << "!= "
- << "host_max (" << host_max << ")"
- << std::endl;
- return -1;
- }
- return 0;
- }
|