mpirun -np 4 ./flop2 10 >> output.txt
Process 1 of 4 on green
Process 3 of 4 on cyan1
rm_l_1_10712: (2.235223) net_send: could not write to fd=6, errno = 9
rm_l_1_10712:  p4_error: net_send write: -1
p3_10572:  p4_error: net_recv read:  probable EOF on socket: 1

mpirun -np 4 ./flop2 1000 >> output.txt
Process 1 of 4 on green
Process 3 of 4 on cyan1
rm_l_1_10723: (2.434907) net_send: could not write to fd=6, errno = 9
rm_l_1_10723:  p4_error: net_send write: -1
p3_10583:  p4_error: net_recv read:  probable EOF on socket: 1

mpirun -np 4 ./flop2 10000 >> output.txt
Process 1 of 4 on green
Process 3 of 4 on cyan1
rm_l_1_10734: (2.231754) net_send: could not write to fd=6, errno = 9
rm_l_1_10734:  p4_error: net_send write: -1
p3_10594:  p4_error: net_recv read:  probable EOF on socket: 1

mpirun -np 4 ./flop2 100000 >> output.txt
Process 1 of 4 on green
Process 0 of 4 on purple
pi is approximately 3.1415926535981167, Error is 0.0000000000083236
wall clock time = 0.011108
Estimated MFLOPs = 54.015124
Process 2 of 4 on red
Process 3 of 4 on cyan1

mpirun -np 4 ./flop2 1000000 >> output.txt
Process 1 of 4 on green
Process 3 of 4 on cyan1
Process 0 of 4 on purple
pi is approximately 3.1415926535899033, Error is 0.0000000000001101
wall clock time = 0.080613
Estimated MFLOPs = 74.429683
Process 2 of 4 on red

mpirun -np 4 ./flop2 10000000 >> output.txt
Process 1 of 4 on green
Process 3 of 4 on cyan1
Process 0 of 4 on purple
pi is approximately 3.1415926535896865, Error is 0.0000000000001066
wall clock time = 0.772768
Estimated MFLOPs = 77.642967
Process 2 of 4 on red

mpirun -np 4 ./flop2 100000000 >> output.txt
Process 1 of 4 on green
Process 3 of 4 on cyan1
Process 0 of 4 on purple
pi is approximately 3.1415926535902168, Error is 0.0000000000004237
wall clock time = 7.698128
Estimated MFLOPs = 77.941027
Process 2 of 4 on red

mpirun -np 4 ./flop2 1000000000 >> output.txt
Process 3 of 4 on cyan1
Process 1 of 4 on green
Process 0 of 4 on purple
pi is approximately 3.1415926535897682, Error is 0.0000000000000249
wall clock time = 76.944742
Estimated MFLOPs = 77.978038
Process 2 of 4 on red

mpirun -np 4 ./flop2 10000000000 >> output.txt
Process 0 of 4 on purple
(this goes into an endless loop because a 32 bit integer can only
represent -2,147,483,648 to +2,147,483,647)

mpirun -np 4 ./flop2 2000000000 >> output.txt
Process 3 of 4 on cyan1
Process 1 of 4 on green
Process 0 of 4 on purple
pi is approximately 3.1415926535898393, Error is 0.0000000000000462
wall clock time = 154.466816
Estimated MFLOPs = 77.686589
Process 2 of 4 on red