Good to know, i contacted the support team from star-CCM+ and they said that parallel computation can only be done through rsh so it seams as though i have no other choice.
With regards to the passwordless login, should i specify the login passwords in the .rhosts or hosts.equiv file since i still cant get to login without a password. I have set the permissions on the .rhosts file to 644 and still nothing. Is there any other files that may need tweaking. This issue has me really stumped and i know to little about Suse to go and dig into the other files. Is there any other deamons (if thats the correct term that needs to be running to get it to login without the need for a password.
Thanks again for all the help
Regards
Henco