Hi Haider Mpiexec doesn’t like the -f option. Just for fun, did you try it without the hosts file, please? Erin M. Hodgess Associate Professor Department of Mathematics and Statistics University of Houston - Downtown mailto: [email protected] ________________________________ From: Haider Abbas <[email protected]> Sent: Tuesday, August 28, 2018 10:09:27 PM To: [email protected] Subject: [mpich-discuss] problem in execution Dear all, I have prepared a 10 node ubuntu based cluster, following the guidelines described in "https://www-users.cs.york.ac.uk/~mjf/pi_cluster/src/Building_a_simple_Beowulf_cluster.html<https://www-users.cs.york.ac.uk/%7Emjf/pi_cluster/src/Building_a_simple_Beowulf_cluster.html>" I have followed each and everthing as mentioned in the above documents. everything is Ok, now I try try to check the cluster by executing the command mpiuser@master:~$ mpiexec -f hosts -n 3 /home/mpiuser/bin/cpi then this return with the error. mpiexec was unable to launch the specified application as it could not find an executable: Executable: -f Node: master I could not solve this. I don't know why this happening. However, executable "cpi" is in /home/mpiuser/bin. I request you all to kindly help me to overcome this problem. thanking in advance. yours sincerely Haider Abbas [https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif] _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss