460853_at_[hidden] wrote:
> I know there's a firewall in each machine that only opens the SSH (22) port, so
> I guess the problem comes from that. So, what ports do I have to open in order
> to boot LAM?.
>
> Executing the lamboot with the -d option, I've read (among many other things)
> this:
>
> lamd -H 155.210.155.67 -P 6459 -n 1 -o 0 -d
>
> So, I guess that this means that the .155.70 machine should be able to reach the
> port 6459 in the .155.67 machine. Am I right? So the solution comes by opening
> the 6459 port in the .155.67 machine? Should I open this port also in the
> .155.70 machine? Otherwise, which ports should I open? Because I don't know if
> it will be enough with opening only these ports.
All non-system (> 1024) TCP ports are needed to boot and run LAM. In
more detail - LAM does not use any specific port numbers, but instead
requests any random open port from the OS. Check out FAQs 17 and 18
here for some more info:
http://www.lam-mpi.org/faq/category4.php3
Hope this helps!
Andrew
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