One Process on Optiplex-790 28 July 2016 04:19:14 PM PRIME_MPI C/MPI version An MPI example program to count the number of primes. The number of processes is 1 N Pi Time 1 0 0.000013 2 1 0.000001 4 2 0.000001 8 4 0.000001 16 6 0.000001 32 11 0.000002 64 18 0.000005 128 31 0.000016 256 54 0.000056 512 97 0.000204 1024 172 0.000720 2048 309 0.002610 4096 564 0.009395 8192 1028 0.029062 16384 1900 0.087730 32768 3512 0.248698 65536 6542 0.918437 131072 12251 3.454836 262144 23000 13.002555 PRIME_MPI - Master process: Normal end of execution. 28 July 2016 04:19:32 PM 2 Processes on Optiplex-790 28 July 2016 04:19:44 PM PRIME_MPI C/MPI version An MPI example program to count the number of primes. The number of processes is 2 N Pi Time 1 0 0.000044 2 1 0.000006 4 2 0.000005 8 4 0.000005 16 6 0.000005 32 11 0.000005 64 18 0.000010 128 31 0.000021 256 54 0.000062 512 97 0.000210 1024 172 0.000726 2048 309 0.002657 4096 564 0.009109 8192 1028 0.029327 16384 1900 0.087753 32768 3512 0.248593 65536 6542 0.918695 131072 12251 3.456712 262144 23000 13.005990 PRIME_MPI - Master process: Normal end of execution. 28 July 2016 04:20:01 PM 2 Processes on Optiplex-790 and 4 on Ispirion-7110 Running Ispirion first im machinefile, Optiplex second 28 July 2016 04:20:18 PM PRIME_MPI C/MPI version An MPI example program to count the number of primes. The number of processes is 6 N Pi Time 1 0 0.009011 2 1 0.001128 4 2 0.001174 8 4 0.001257 16 6 0.001104 32 11 0.002818 64 18 0.002875 128 31 0.002946 256 54 0.002227 512 97 0.001647 1024 172 0.002204 2048 309 0.002354 4096 564 0.004641 8192 1028 0.013333 16384 1900 0.041757 32768 3512 0.150692 65536 6542 0.559124 131072 12251 2.111010 262144 23000 7.963093 PRIME_MPI - Master process: Normal end of execution. 28 July 2016 04:20:28 PM Running Optiplex first im machinefile, Inspirion second 28 July 2016 04:58:09 PM PRIME_MPI C/MPI version An MPI example program to count the number of primes. The number of processes is 6 N Pi Time 1 0 0.006863 2 1 0.001609 4 2 0.001378 8 4 0.001101 16 6 0.001111 32 11 0.001078 64 18 0.001192 128 31 0.001142 256 54 0.001118 512 97 0.037825 1024 172 0.001347 2048 309 0.003955 4096 564 0.004276 8192 1028 0.012525 16384 1900 0.050102 32768 3512 0.140885 65536 6542 0.523809 131072 12251 1.974548 262144 23000 7.438048 PRIME_MPI - Master process: Normal end of execution. 28 July 2016 04:58:19 PM