 
     using namespace warpdrive;
     using namespace std;
-
-    cout << "================= WARPDRIVE ================" << endl;
 
     if (argc < 9)
     {

    //the size of the thread groups (must be available at compile time)
    static constexpr index_t group_size = 16;
    //output verbosity (must be available at compile time)
    static constexpr index_t verbosity = 1;
    //filename for test data (dumped with binary_io.h)
    const string  filename = argv[1];
    //length of test data

    const index_t threads_per_block = atoi(argv[7]);
    //id of selected CUDA device
    const index_t device_id = atoi(argv[8]);
    
    if (verbosity > 0)
    {
        cout << "================= WARPDRIVE ================" << endl;
        cout << "================== PARAMS =================="
             << "\n(static) group_size=" << group_size
             << "\n(static) verbosity=" << verbosity
