Re: [Condor-users] MPICH application

[Nicolas GUIOT <nicolas.guiot@xxxxxxx>]

Mark,

I don't understand when you're creating your "machfile" file : is it created on the fly ? how ? I can't see anyhting related to it, only when you want to use it : "mpiexec -l -machinefile $MPDIR/etc/machfile -envall -n $_CONDOR_NPROCS $EXECUTABLE $@"

Does this mean that you create it manually ? before submitting the jobs ? in this case, it's static, and you can't know on which machine you're running your job ??

I'd be glad to have a bit some explanation...

Nicolas


----------------
On Wed, 11 Jul 2007 17:12:03 +0100
Mark Calleja wrote:

> Nicolas, if you're going to use MPICH2 on the same SMP machine then the 
> mp2script and the machfile that it uses take on a particularly simple 
> form. I've written some notes on how to do it at:
> 
> http://www.escience.cam.ac.uk/projects/camgrid/mpi.html
> 
> Good luck,
> Mark
> 
> Nicolas GUIOT wrote:
> > Hi,
> >
> > I'm trying (again..) to make some MPI application work with condor.
> >
> > Right now, the problem is when I try to run some parallel jobs on the same machine (dual-core) : basically, mpich2 asks for a file mpd.hosts that contains this : 
> > node1:2
> >  --> so that it starts 2 process on the same box.
> >
> > But mp2script creates a file that contains this : 
> > node1
> > node1
> >  --> this doesn't work (at least by me..)
> >
> > Did someone find a workaround ?
> >
> > Tnaks in advance
> > Nicolas
> >
> >
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----------


----------------------------------------------------
CNRS - UPR 9080 : Laboratoire de Biochimie Theorique

Institut de Biologie Physico-Chimique
13 rue Pierre et Marie Curie
75005 PARIS - FRANCE

Tel : +33 158 41 51 70
Fax : +33 158 41 50 26
----------------------------------------------------