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!!!
> ----- Original Message ----- From: "Jeff Squyres" <jsquyres_at_[hidden]>
> To: "Open MPI Users" <users_at_[hidden]>
> 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
>>> 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
>> 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
>> Jeff Squyres
>> Cisco Systems
>> users mailing list
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