Hi Pavan,<br>Thanks for all of your help.<br>I copied the folder /opt/mpich2-1.4.1p1/bin/bin/ on all of my computer nodes. And now its working perfectly fine.<br>So my installation phase is over I suppose. :)<br><br>Here is my sample runs with different number of processes. One thing which I observed and not able to figure out is, as I am increasing the number of processes the error is decreasing upto 5 processes. But when I run it for 16 processes the error has increased, which I think has to be decreased. Can you please tell me why this is happening?<br>
<br>Thanks again. And sorry to bother you. :) <br> <br>[root@beowulf ~]# mpiexec -f hosts -n 1 /opt/mpich2-1.4.1p1/examples/./cpi<br>Process 0 of 1 is on beowulf.master<br>pi is approximately 3.1415926544231341, Error is 0.0000000008333410<br>
wall clock time = 0.000220<br>[root@beowulf ~]# mpiexec -f hosts -n 5 /opt/mpich2-1.4.1p1/examples/./cpi<br>Process 0 of 5 is on beowulf.master<br>Process 1 of 5 is on beowulf.node1<br>Process 3 of 5 is on beowulf.node3<br>
Process 4 of 5 is on beowulf.node4<br>Process 2 of 5 is on beowulf.node2<br>pi is approximately 3.1415926544231230, Error is 0.0000000008333298<br>wall clock time = 0.001994<br>[root@beowulf ~]# mpiexec -f hosts -n 2 /opt/mpich2-1.4.1p1/examples/./cpi<br>
Process 0 of 2 is on beowulf.master<br>Process 1 of 2 is on beowulf.node1<br>pi is approximately 3.1415926544231318, Error is 0.0000000008333387<br>wall clock time = 0.001151<br>[root@beowulf ~]# mpiexec -f hosts -n 3 /opt/mpich2-1.4.1p1/examples/./cpi<br>
Process 0 of 3 is on beowulf.master<br>Process 2 of 3 is on beowulf.node2<br>Process 1 of 3 is on beowulf.node1<br>pi is approximately 3.1415926544231323, Error is 0.0000000008333392<br>wall clock time = 0.001397<br>[root@beowulf ~]# mpiexec -f hosts -n 4 /opt/mpich2-1.4.1p1/examples/./cpi<br>
Process 0 of 4 is on beowulf.master<br>Process 1 of 4 is on beowulf.node1<br>Process 2 of 4 is on beowulf.node2<br>Process 3 of 4 is on beowulf.node3<br>pi is approximately 3.1415926544231239, Error is 0.0000000008333307<br>
wall clock time = 0.002573<br>[root@beowulf ~]# mpiexec -f hosts -n 16 /opt/mpich2-1.4.1p1/examples/./cpi<br>Process 6 of 16 is on beowulf.node1<br>Process 11 of 16 is on beowulf.node1<br>Process 5 of 16 is on beowulf.master<br>
Process 1 of 16 is on beowulf.node1<br>Process 10 of 16 is on beowulf.master<br>Process 15 of 16 is on beowulf.master<br>Process 0 of 16 is on beowulf.master<br>Process 2 of 16 is on beowulf.node2<br>Process 8 of 16 is on beowulf.node3<br>
Process 12 of 16 is on beowulf.node2<br>Process 13 of 16 is on beowulf.node3<br>Process 7 of 16 is on beowulf.node2<br>Process 3 of 16 is on beowulf.node3<br>Process 4 of 16 is on beowulf.node4<br>Process 14 of 16 is on beowulf.node4<br>
Process 9 of 16 is on beowulf.node4<br>pi is approximately 3.1415926544231274, Error is 0.0000000008333343<br>wall clock time = 0.007220<br>[root@beowulf ~]#<br><br>