Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: Re: [OMPI users] tcp communication problems with 1.4.3 and 1.4.4 rc2 on FreeBSD
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2011-07-07 20:38:56

Are you able to run simple MPI applications with 1.4.3 or 1.4.4 on your OS? E.g., the "ring_c" program in the example/ directory? This might be a good test to see if OMPI's TCP is working at all.

Assuming that works... Have you tried attaching debuggers to see where your process is hanging? There might be a logic issue in your app that isn't-quite-legal-MPI but works with some amount of buffering, but fails if the amount of buffering is reduced.

On Jul 5, 2011, at 4:24 PM, Steve Kargl wrote:

> On Tue, Jul 05, 2011 at 01:14:06PM -0700, Steve Kargl wrote:
>> I have an application that appears to function as I expect
>> when compiled with openmpi-1.4.2 on FreeBSD 9.0. But, it
>> appears to hang during communication between nodes. What
>> follows is the long version.
> Argh I messed up. It should read "But, it appears to hang
> during communication between nodes when using 1.4.3 or 1.4.4."
> --
> Steve
> _______________________________________________
> users mailing list
> users_at_[hidden]

Jeff Squyres
For corporate legal information go to: