ring_mpi():
  Fortran77/MPI version
  Measure time required to transmit data
  around a ring of processes
 
  The number of processes is        4
 
  Timings based on     10 experiments
  N double precision values were sent
  in a ring transmission starting and ending at process 0
  and using a total of      4 processes.
 
         N           T min           T ave           T max
 
       100    0.528600E-05    0.189145E-04    0.139120E-03
      1000    0.277370E-04    0.433509E-04    0.107575E-03
     10000    0.107382E-03    0.134108E-03    0.287090E-03
    100000    0.824805E-03    0.993359E-03    0.245898E-02
   1000000    0.468452E-02    0.580869E-02    0.154567E-01
 
ring_mpi():
  Normal end of execution.