[OMPI users] mpiexec and iptables

[Gijsbert Wiesenekker]

I am running mpiexec on Fedora Core 10. Where can I find the list of 
ports that I have to open if I want to run mpiexec with iptables enabled?
Running mpiexec with debug shows that it uses ports around 50000. strace 
does not show a call to getenv, so I am not sure if mpiexec on Fedora 
supports MPIEXEC_PORT_RANGE.

Regards,
Gijsbert