// A molecular dynamics application that calculates the potential and relocation of particles within a large 3D space.

CLI::App app{"FFT"};

// num_threads should be roughly equal to NUMBER_PAR_PER_BOX for best performance

unsigned num_threads {1};

app.add_option("-t,--num_threads", num_threads, "number of threads (default=1)");

int num_values {1024}; // 33554432 this is the value set by bots

app.add_option("-v,--num_values", num_values, "number of values must be power of 2 (default=1024)");

std::string model = "tf";

app.add_option("-m,--model", model, "model name tbb|omp|tf (default=tf)")

->check([] (const std::string& m) {

if(m != "tbb" && m != "omp" && m != "tf") {

return "model name should be \"tbb\", \"omp\", or \"tf\"";

}

return "";

});

CLI11_PARSE(app, argc, argv);

// Print configuration

std::cout << "model=" << model << ' '

<< "num_threads=" << num_threads << ' '

<< "num_values=" << num_values << ' '

<< std::endl;

sort_init();

auto t1 = std::chrono::high_resolution_clock::now();

//std::sort(array, array+array_size);

sort_par();

//sort_par_tf();

auto t2 = std::chrono::high_resolution_clock::now();

std::cout << std::chrono::duration_cast<std::chrono::microseconds>(t2 - t1).count()/1e3 << " ms\n";

sort_verify();

return 0;