Since I am not able to tell from the console display, what operating system are you using? ================================== I'm having an issue getting our cluster working.. Here is what I get when i run mpirun on an example [wind@cluster1 basic]$ mpirun -np 2 cpilog connect to address 192.168.0.10: Connection refused Trying krb4 rsh... connect to address 192.168.0.10: Connection refused trying normal rsh (/usr/bin/rsh) It just halts there. I can rsh just fine from the master node to the other node [wind@cluster1 basic]$ rsh node1 date connect to address 192.168.0.10: Connection refused Trying krb4 rsh... connect to address 192.168.0.10: Connection refused trying normal rsh (/usr/bin/rsh) Fri Aug 26 08:18:04 PDT 2005 my /home dir is nfs mounted on node1 here is the .rhosts file node0 wind node1 wind I'm out of ideas.. i've been reading for about 5 hours now with no luck any pointers? thanks mike -- http://www.zcentric.com/wiki My Linux Howto/Tips Wiki