int main(int argc, char *argv[]) { perf_parse_args(argc, argv); std::cout << "size: " << PERF_N << std::endl; // setup context and queue for the default device boost::compute::device device = boost::compute::system::default_device(); boost::compute::context context(device); boost::compute::command_queue queue(context, device); std::cout << "device: " << device.name() << std::endl; // create vector of random numbers on the host std::vector<int> host_keys(PERF_N); std::generate(host_keys.begin(), host_keys.end(), rand); std::vector<long> host_values(PERF_N); std::copy(host_keys.begin(), host_keys.end(), host_values.begin()); // create vector on the device and copy the data boost::compute::vector<int> device_keys(PERF_N, context); boost::compute::vector<long> device_values(PERF_N, context); perf_timer t; for(size_t trial = 0; trial < PERF_TRIALS; trial++){ boost::compute::copy( host_keys.begin(), host_keys.end(), device_keys.begin(), queue ); boost::compute::copy( host_values.begin(), host_values.end(), device_values.begin(), queue ); t.start(); // sort vector boost::compute::sort_by_key( device_keys.begin(), device_keys.end(), device_values.begin(), queue ); queue.finish(); t.stop(); } std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl; // verify keys are sorted if(!boost::compute::is_sorted(device_keys.begin(), device_keys.end(), queue)){ std::cout << "ERROR: is_sorted() returned false for the keys" << std::endl; return -1; } // verify values are sorted if(!boost::compute::is_sorted(device_values.begin(), device_values.end(), queue)){ std::cout << "ERROR: is_sorted() returned false for the values" << std::endl; return -1; } return 0; }
int main(int argc, char *argv[]) { perf_parse_args(argc, argv); std::cout << "size: " << PERF_N << std::endl; // setup context and queue for the default device boost::compute::device device = boost::compute::system::default_device(); boost::compute::context context(device); boost::compute::command_queue queue(context, device); std::cout << "device: " << device.name() << std::endl; // create vector of keys and random values std::vector<int> host_keys(PERF_N); std::vector<int> host_values(PERF_N); std::generate(host_keys.begin(), host_keys.end(), UniqueKey); std::generate(host_values.begin(), host_values.end(), rand_int); // create vectors for keys and values on the device and copy the data boost::compute::vector<int> device_keys(PERF_N, context); boost::compute::vector<int> device_values(PERF_N,context); boost::compute::copy( host_keys.begin(), host_keys.end(), device_keys.begin(), queue ); boost::compute::copy( host_values.begin(), host_values.end(), device_values.begin(), queue ); // vectors for the results boost::compute::vector<int> device_keys_results(PERF_N, context); boost::compute::vector<int> device_values_results(PERF_N,context); typedef boost::compute::vector<int>::iterator iterType; std::pair<iterType, iterType> result( device_keys_results.begin(), device_values_results.begin() ); // reduce by key perf_timer t; for(size_t trial = 0; trial < PERF_TRIALS; trial++) { t.start(); result = boost::compute::reduce_by_key(device_keys.begin(), device_keys.end(), device_values.begin(), device_keys_results.begin(), device_values_results.begin(), queue); t.stop(); } std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl; size_t result_size = std::distance(device_keys_results.begin(), result.first); if(result_size != static_cast<size_t>(host_keys[PERF_N-1] + 1)) { std::cout << "ERROR: " << "wrong number of keys" << result_size << "\n" << (host_keys[PERF_N-1] + 1) << std::endl; return -1; } return 0; }