On Wed, 18 Mar 2009, Raymond Wan wrote:
Perhaps it has something to do with RH's defaults for the firewall settings?
If your sysadmin uses kickstart to configure the systems, (s)he has to add 'firewall --disabled'; similar for SELinux which seems to have caused problems to another person on this list. OTOH, if (s)he blindly copied the config for a workstation to a cluster node, maybe some more education is needed first...
Another system that worked "immediately" was a Debian system.
That's because Debian doesn't configure a firewall or SELinux, leaving the admin the responsability to do it.
Anyway, if you find out a solution that doesn't require the firewall to be turned off, please let me know -- I think our sysadmin would be interested, too.
Depending on your definition of 'firewall turned off', the new feature of restricting ports used by OpenMPI will help. The firewall can stay on, but it should be configured to open a range of ports used by OpenMPI.
-- Bogdan Costescu IWR, University of Heidelberg, INF 368, D-69120 Heidelberg, Germany Phone: +49 6221 54 8240, Fax: +49 6221 54 8850 E-mail: bogdan.coste...@iwr.uni-heidelberg.de
