Open MPI logo

Open MPI Development 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 devel] trunk hangs since r19010
From: Ralph Castain (rhc_at_[hidden])
Date: 2008-07-28 12:19:33

My test wasn't a benchmark - I was just testing with a little program
that calls mpi_init, mpi_barrier, and mpi_finalize.

A test with just mpi_init/finalize works fine, so it looks like we
simply hang when trying to communicate. This also only happens on
multi-node operations.

On Jul 28, 2008, at 10:16 AM, Jeff Squyres wrote:

> On Jul 28, 2008, at 12:03 PM, George Bosilca wrote:
>> Interesting. The self is only used for local communications. I
>> don't expect that any benchmark execute such communications, but
>> apparently I was wrong. Please let me know the failing test, I will
>> take a look this evening.
> FWIW, my manual tests of a simplistic "ring" program work for all
> combinations (openib, openib+self, openib+self+sm). Shrug.
> But for OSU latency, I found that openib, openib+sm work, but openib
> +sm+self hangs (same results whether the 2 procs are on the same
> node or different nodes). There is no self communication in
> osu_latency, so something else must be going on.
> --
> Jeff Squyres
> Cisco Systems
> _______________________________________________
> devel mailing list
> devel_at_[hidden]