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Subject: Re: [OMPI users] Deadlock with barrier und RMA
From: Constantinos Makassikis (cmakassikis_at_[hidden])
Date: 2011-06-11 10:39:21


On Sat, Jun 11, 2011 at 5:17 PM, Ole Kliemann <
ole-ompi-2011_at_[hidden]> wrote:

> On Sat, Jun 11, 2011 at 07:24:24AM -0600, Ralph Castain wrote:
> > Oh my - that is such an old version! Any reason for using it instead of
> something more recent?
>
> I'm using the cluster of the university where I work und I'm not the
> admin. So I'm going with what is installed there.
>

Provided your account is available over all the nodes of the cluster
(commonly through a shared filesystem (e.g. NFS)),
you can easily install and use a more recent version of OpenMPI.

mkdir -p ${HOME}/ompi-1.5.3 && ./configure --prefix=${HOME}/ompi-1.5.3
make
make install

You should not forget to modify your "PATH" and "LD_LIBRARY_PATH"
environment variables in your ".bash_profile".

>
> It's the first time I'm using MPI. Before I complain to the admins about
> old versions or anything else, I'd like to check whether my code
> actually should be okay in regard to MPI specifications.
>
> > On Jun 11, 2011, at 8:43 AM, Ole Kliemann wrote:
> >
> > > Hi everyone!
> > >
> > > I'm trying to use MPI on a cluster running OpenMPI 1.2.4 and starting
> > > processes through PBSPro_11.0.2.110766. I've been running into a couple
> > > of performance and deadlock problems and like to check whether I'm
> > > making a mistake.
> > >
> > > One of the deadlocks I managed to boil down to the attached example. I
> > > run it on 8 cores. It usually deadlocks with all except one process
> > > showing
> > >
> > > start barrier
> > >
> > > as last output.
> > >
> > > The one process out of order shows:
> > >
> > > start getting local
> > >
> > > My question at this point is simply whether this is expected behaviour
> > > of OpenMPI.
> > >
> > > Thanks in advance!
> > > Ole
> > > <mpi_barrier.cc>_______________________________________________
> > > users mailing list
> > > users_at_[hidden]
> > > http://www.open-mpi.org/mailman/listinfo.cgi/users
> >
> >
> > _______________________________________________
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> > users_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>
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