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From: Simon Hammond (simon.hammond_at_[hidden])
Date: 2007-08-31 03:17:36


On 31/08/2007, Gleb Natapov <glebn_at_[hidden]> wrote:
> 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.

Sounds very drastic, thanks for the advice. I'll give it a go. Do you
think it might be easy to add this to the source code at sometime
though?

Thanks for your advice guys,

Si Hammond
University of Warwick

>
> --
> Gleb.
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