mpiexec  -n 48 ./cpi 2>&1 | tee result_cpi
Process 0 of 48 is on k1
Process 6 of 48 is on k1
Process 18 of 48 is on k1
Process 30 of 48 is on k1
Process 42 of 48 is on k1
Process 12 of 48 is on k1
Process 24 of 48 is on k1
Process 4 of 48 is on k5
Process 10 of 48 is on k5
Process 22 of 48 is on k5
Process 28 of 48 is on k5
Process 34 of 48 is on k5
Process 16 of 48 is on k5
Process 1 of 48 is on k2
Process 7 of 48 is on k2
Process 13 of 48 is on k2
Process 19 of 48 is on k2
Process 25 of 48 is on k2
Process 37 of 48 is on k2
Process 43 of 48 is on k2
Process 31 of 48 is on k2
Process 2 of 48 is on k3
Process 8 of 48 is on k3
Process 14 of 48 is on k3
Process 20 of 48 is on k3
Process 26 of 48 is on k3
Process 38 of 48 is on k3
Process 44 of 48 is on k3
Process 32 of 48 is on k3
Process 40 of 48 is on k5
Process 46 of 48 is on k5
Process 3 of 48 is on k4
Process 9 of 48 is on k4
Process 15 of 48 is on k4
Process 21 of 48 is on k4
Process 27 of 48 is on k4
Process 33 of 48 is on k4
Process 39 of 48 is on k4
Process 45 of 48 is on k4
Process 5 of 48 is on k6
Process 11 of 48 is on k6
Process 17 of 48 is on k6
Process 23 of 48 is on k6
Process 35 of 48 is on k6
Process 47 of 48 is on k6
Process 29 of 48 is on k6
Process 41 of 48 is on k6
Process 36 of 48 is on k1
pi is approximately 3.1415926544231265, Error is 0.0000000008333334
wall clock time = 0.003255