The problem is 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 is closed. Do you know which port use these commands? Thank you, Sofia > 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 > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
