3 November  2023   6:25:21.372 PM      
 
prime_mpi():
  FORTRAN77/MPI version
 
  An MPI example program to count the number of primes.
  The number of processes is        4
 
         N        Pi          Time
 
         1         0  0.204086E-03
         2         1  0.500679E-05
         4         2  0.381470E-05
         8         4  0.381470E-05
        16         6  0.381470E-05
        32        11  0.429153E-05
        64        18  0.524521E-05
       128        31  0.929832E-05
       256        54  0.228882E-04
       512        97  0.658035E-04
      1024       172  0.206470E-03
      2048       309  0.726700E-03
      4096       564  0.259805E-02
      8192      1028  0.929713E-02
     16384      1900  0.302961E-01
     32768      3512  0.746329E-01
     65536      6542  0.279282    
    131072     12251   1.05493    
    262144     23000   4.00359    
 
prime_mpi(): Master process:
  Normal end of execution.
 
 3 November  2023   6:25:26.829 PM