namespace MPI 
{
  void Finalize (  );
  void Init ( int &argc, char **&argv );
  void Init ( );
  double Wtick ( );
  double Wtime ( );
  class Comm 
  {
    public:
      int Get_size (  ) const;
      int Get_rank ( ) const;
  };
  extern Comm COMM_WORLD;
}

void timestamp ( );