I can't think of any reason why Open MPI wouldn't work over a WiFi
connection unless there's some weirdness in the wireless driver.
On Oct 1, 2008, at 5:19 AM, Sofia Aparicio Secanellas wrote:
The problem is with the WiFi connection!
We were connecting the computers using WiFi, we have changed to a
cable connection and the program is working.
It seems that the port that MPI_Send and MPI_Recv use are closed.
Do you know which port are using the MPI_Send and MPI_Recv commands?
Thank you!!!
Sofia
----- Original Message ----- From: "Jeff Squyres" <jsquy...@cisco.com>
To: "Open MPI Users" <us...@open-mpi.org>
Sent: Tuesday, September 30, 2008 9:11 PM
Subject: Re: [OMPI users] Problem with MPI_Send and MPI_Recv
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
running.
How can I do to attach the MPI processes with a debugger?
I have used before:
dbx - PID
where
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...
--
Jeff Squyres
Cisco Systems
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