text: #hello.py
  
  from mpi4py import MPI
  import sys
  comm = MPI.COMM_WORLD
  size = comm.Get_size()
  rank = comm.Get_rank()
  name = MPI.Get_processor_name()
  print "This is process %d / %d, running on %s" % (rank,size,name)
  #comm.Barrier()
  
  