On Sep 30, 2008, at 12:02 PM, Sofia Aparicio Secanellas wrote:
>> 1. From prior mails, you do not seem to have iptables running to
>> block any ports -- is there any other port blocking software
>> running, perchance?
> I do not think so. What can I do to be sure that I do not have any
> other port blocking software running?
Test that random TCP ports can connect to each other. Perhaps
something like this on computer 1:
computer1$ nc -lp 123456
Then on your other computer:
computer2$ telnet computer1 123456
If the "telnet" connects, then you should be able to type anything and
have it appear on computer1 (where nc) is running. Hit Ctrl-C in the
window where "nc" is running to kill the connection.
If this works, then you likely do not have port blocking software
> How can I do to attach the MPI processes with a debugger?
> I have used before:
> dbx - PID
> It seems that the results that I have obtained were not very helpful.
Ah yes, sorry, this thread has been so long that I missed that. I see
the stack traces, and like Terry said, it shows that the sends and
receives are pending, but not *why*. Well, let's see the results of
the "nc" test from above before deciding how to move onward...