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From: Gleb Natapov (glebn_at_[hidden])
Date: 2007-08-31 03:07:41

On Fri, Aug 31, 2007 at 08:04:00AM +0100, Simon Hammond wrote:
> On 31/08/2007, Lev Givon <lev_at_[hidden]> wrote:
> > Received from George Bosilca on Thu, Aug 30, 2007 at 07:42:52PM EDT:
> > > I have a patch for this, but I never felt a real need for it, so I
> > > never push it in the trunk. I'm not completely convinced that we need
> > > it, except in some really strange situations (read grid). Why do you
> > > need a port range ? For avoiding firewalls ?
> We are planning on using OpenMPI as the basis for running MPI jobs
> across a series of workstations overnight. The workstations are locked
> down so that only a small number of ports are available for use. If we
> try to use anything else its disaster.
> Unfortunately this is really an organizational policy above anything
> else and its very difficult to get it to change.
As workaround you can write application that will bind to all ports that
are not allowed to be used by MPI before running MPI job.