6 October 2025   6:31:08.957 PM
 
prime_mpi():
  Fortran90/MPI version
 
  An MPI example program to count the number of primes.
  The number of processes is        2
 
         N        Pi          Time
 
         1         0  0.431480E-04
         2         1  0.210200E-05
         4         2  0.981000E-06
         8         4  0.867000E-06
        16         6  0.130500E-05
        32        11  0.190500E-05
        64        18  0.279400E-05
       128        31  0.653600E-05
       256        54  0.187830E-04
       512        97  0.619520E-04
      1024       172  0.216161E-03
      2048       309  0.731491E-03
      4096       564  0.275562E-02
      8192      1028  0.967109E-02
     16384      1900  0.364241E-01
     32768      3512  0.131533    
     65536      6542  0.493328    
    131072     12251   1.83884    
    262144     23000   6.88400    
 
prime_mpi():
  Normal end of execution.
 
 6 October 2025   6:31:18.398 PM
 6 October 2025   6:31:18.712 PM
 
prime_mpi():
  Fortran90/MPI version
 
  An MPI example program to count the number of primes.
  The number of processes is        4
 
         N        Pi          Time
 
         1         0  0.105319E-03
         2         1  0.899800E-05
         4         2  0.476100E-05
         8         4  0.486300E-05
        16         6  0.558300E-05
        32        11  0.635200E-05
        64        18  0.839200E-05
       128        31  0.154320E-04
       256        54  0.421140E-04
       512        97  0.133821E-03
      1024       172  0.511568E-03
      2048       309  0.156856E-02
      4096       564  0.565621E-02
      8192      1028  0.161029E-01
     16384      1900  0.220075E-01
     32768      3512  0.666085E-01
     65536      6542  0.248508    
    131072     12251  0.958934    
    262144     23000   3.57108    
 
prime_mpi():
  Normal end of execution.
 
 6 October 2025   6:31:23.648 PM