     std::cerr << "Error: No coordinates read." << std::endl;
     exit(1);
   }
-
-  // Move to device.
-  _coordinates = coordinates;
 }
 
 void test_geo(int num_arguments, char** argument_array) {

  std::cout << "Coordinates (output) = " << std::endl;

  thrust::host_vector<geo::coordinates_t> h_coordinates = coordinates;
  for (int i = 0; i < h_coordinates.size(); i++)
    std::cout << "Node (" << i << ") = " << h_coordinates[i].latitude << ", "
              << h_coordinates[i].longitude << std::endl;

  std::cout << "GPU Elapsed Time : " << gpu_elapsed << " (ms)" << std::endl;
}

  unsigned int total_iterations = 10;

  vertex_t n_vertices = G.get_number_of_vertices();

  // Coordinates: Latitude/Longitude
  std::string coordinates_filename = argument_array[2];
  geo::coordinates_t default_invalid{gunrock::numeric_limits<float>::invalid(),
                                     gunrock::numeric_limits<float>::invalid()};
  thrust::host_vector<geo::coordinates_t> load_coordinates(n_vertices,
                                                           default_invalid);
  read_coordinates_file(coordinates_filename, load_coordinates.data());
  thrust::device_vector<geo::coordinates_t> coordinates(load_coordinates);

  // --
  // GPU Run
