11 May 2025 08:10:52 PM

PRIME_MPI
  C++/MPI version

  An MPI example program to count the number of primes.
  The number of processes is 4

         N        Pi          Time

         1         0      6.3728e-05
         2         1       6.569e-06
         4         2       2.977e-06
         8         4       2.884e-06
        16         6       2.777e-06
        32        11       2.906e-06
        64        18       3.802e-06
       128        31       6.637e-06
       256        54      1.6809e-05
       512        97      5.3022e-05
      1024       172     0.000175924
      2048       309     0.000596438
      4096       564      0.00236222
      8192      1028      0.00892614
     16384      1900       0.0282556
     32768      3512       0.0752768
     65536      6542         0.28169
    131072     12251         1.07135
    262144     23000         4.04486

PRIME_MPI - Master process:
  Normal end of execution.

11 May 2025 08:10:58 PM