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

        }
    }

    cout << "errors: " << num_errors << endl;

    //free memory
    delete[] keys_h;

    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
