eady> mpif90 mpi_hello.f90 -i_dynamic
eady> /usr/local/mpich/bin/mpirun -machinefile mfile -np 2 a.out
 I am eady.colorado.edu, process 0 of  2. I send to  1 and rec from  1
 I am proudman.colorado.edu, process 1 of  2. I send to  0 and rec from  0