n339(2):   Process 3 says 'Hello, world!'
n778(0): 
n778(0): HELLO_WORLD - Master process:
n778(0):   C version
n778(0):   An MPI example program.
n778(0): 
n778(0):   The number of processes is 4.
n778(0): 
n778(0):   Process 0 says 'Hello, world!'
n778(0): 
n778(0): HELLO_WORLD - Master process:
n778(0):   Normal end of execution: 'Goodbye, world!'
n339(2):   Process 2 says 'Hello, world!'
n778(0):   Process 1 says 'Hello, world!'
All nodes terminated successfully.