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From: Jeff Squyres \(jsquyres\) (jsquyres_at_[hidden])
Date: 2006-04-12 22:51:20

> -----Original Message-----
> From: users-bounces_at_[hidden]
> [mailto:users-bounces_at_[hidden]] On Behalf Of Adams Samuel
> Sent: Wednesday, April 12, 2006 11:14 AM
> To: 'Open MPI Users'
> Subject: Re: [OMPI users] job running question
> I got it to work, but it didn't have anything to do with the
> environment
> variables on the shell.
> I am running CentOS 4.2, and the system has everything
> compiled with the GCC
> 3.4, and it also has GCC 4.0 installed. I was building ompi
> with GCC 4.0,
> and I think it was having trouble with loading dynamic
> libraries since the
> system is build with 3.4. I am not sure if that is exactly
> the case, but I
> recompiled ompi with GCC 3.4, and only used gfortran for FC.
> After that
> things seemed to be working properly.
> Was my guess correct, or do you know the real reason why this is?

I can't say for sure. But mixing versions of libraries -- particularly
the versions of the shared libraries that the expect -- may lead to
unexpected results like this.
> Also, does ompi have something similar to "lamboot" and
> "recon", or is the

Not yet. It's on the to-do list.

> only option is adding --hostfile or --host a,b to the mpirun command?

At the moment, using a hostfile, supplying --host, or using a supported
scheduler (that effectively supplies an implicit hostfile) are the only

Jeff Squyres
Server Virtualization Business Unit
Cisco Systems