Process 1 says 'Hello, world!'
  Process 3 says 'Hello, world!'
  Process 4 says 'Hello, world!'
  Process 5 says 'Hello, world!'
  Process 2 says 'Hello, world!'
  Process 6 says 'Hello, world!'
  Process 7 says 'Hello, world!'

HELLO_MPI - Master process:
  C++/MPI version
  An MPI example program.

  The number of processes is 8

  Process 0 says 'Hello, world!'

HELLO_MPI - Master process:
  Normal end of execution: 'Goodbye, world!'

  Elapsed wall clock time = 6.79493e-05 seconds.