28 March 2023  11:07:29.173 AM
 
prime_mpi():
  FORTRAN90/MPI version
 
  An MPI example program to count the number of primes.
  The number of processes is        8
 
         N        Pi          Time
 
         1         0  0.670910E-03
         2         1  0.147820E-04
         4         2  0.548363E-05
         8         4  0.596046E-05
        16         6  0.524521E-05
        32        11  0.548363E-05
        64        18  0.119209E-04
       128        31  0.905991E-05
       256        54  0.181198E-04
       512        97  0.550747E-04
      1024       172  0.168324E-03
      2048       309  0.598907E-03
      4096       564  0.494742E-02
      8192      1028  0.814724E-02
     16384      1900  0.258012E-01
     32768      3512  0.675702E-01
     65536      6542  0.236397    
    131072     12251  0.936628    
 
PRIME_MPI():
  Normal end of execution.
 
28 March 2023  11:07:30.455 AM