unsigned num_threads = std::thread::hardware_concurrency();

if(argc > 1) {

num_threads = std::atoi(argv[1]);

}

const int width {12};

const int rounds {5};

const int repeat [] = {1, 5, 10, 100};

std::cout << std::setw(width) << "|V|+|E|"

<< std::setw(width) << "Repeat"

<< std::setw(width) << "OMP"

<< std::setw(width) << "TBB"

<< std::setw(width) << "TF"

<< std::setw(width) << "speedup1"

<< std::setw(width) << "speedup2"

<< '\n';

std::cout << std::string(100, '=') << std::endl;

std::cout.precision(3);

const std::string line (100, '-');

for(int i=1; i<=451; i += 15) {

for(int k=0; k<4; k++) {

double omp_time {0.0};

double tbb_time {0.0};

double tf_time {0.0};

LevelGraph graph(i, i);

if(k == 0) {

std::cout << std::setw(width) << graph.graph_size();

}

else {

std::cout << std::setw(width) << " ";

}

for(int j=0; j<rounds; ++j) {

omp_time += measure_time_omp(graph, num_threads, repeat[k]).count();

tbb_time += measure_time_tbb(graph, num_threads, repeat[k]).count();

tf_time += measure_time_taskflow(graph, num_threads, repeat[k]).count();

}

std::cout << std::setw(width) << repeat[k] << std::fixed

<< std::setw(width) << omp_time / rounds / 1e3 << std::fixed

<< std::setw(width) << tbb_time / rounds / 1e3 << std::fixed

<< std::setw(width) << tf_time / rounds / 1e3 << std::fixed

<< std::setw(width) << omp_time / tf_time << std::fixed

<< std::setw(width) << tbb_time / tf_time << std::fixed

<< std::endl;

}

std::cout << line << std::endl;

}