Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] multicast not available
From: Ralph Castain (rhc_at_[hidden])
Date: 2011-02-24 10:30:09


If you are trying to use OMPI as the base for ORCM, then you can tell ORCM
to use OMPI's "tcp" multicast module - it fakes multicast using pt-2-pt tcp
messaging.

-mca rmcast tcp

will do the trick.

On Thu, Feb 24, 2011 at 6:27 AM, Jeff Squyres <jsquyres_at_[hidden]> wrote:

> I'm still not sure what you're asking -- are you asking how to get Open MPI
> to work if multicast is disabled in your network?
>
> If so, not to worry; Open MPI doesn't currently use multicast.
>
>
> On Feb 24, 2011, at 6:39 AM, Vasiliy G Tolstov wrote:
>
> > On Thu, 2011-02-24 at 06:32 -0500, Jeff Squyres (jsquyres) wrote:
> >> I'm not sure what you're asking. Open MPI should work just fine in a Xen
> environment.
> >>
> >> If you're unsure about how to use the MPI API, you might want to take a
> tutorial to get you familiar with MPI concepts, etc. Google around; there
> are a bunch available. My personal favorite is at the UIUC NCSA web site; if
> you sign up for a free account, they have a beginners and intermediate MPI
> tutorials available.
> >>
> >> Sent from my PDA. No type good.
> >>
> >> On Feb 24, 2011, at 4:37 AM, "Vasiliy G Tolstov" <v.tolstov_at_[hidden]>
> wrote:
> >
> > This is not xen specific problem. but routing specific. Admins deny
> > multicast packets.
> >
> > --
> > Vasiliy G Tolstov <v.tolstov_at_[hidden]>
> > Selfip.Ru
> >
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>