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From: Jeff Squyres \(jsquyres\) (jsquyres_at_[hidden])
Date: 2006-03-30 15:25:47


Another clarification here -- Open MPI's implementation of the MPI-2
publish/lookup stuff is implemented using the underlying ORTE registry
(that's one of the reasons the ORTE registry exists). It is fairly
narrow in scope -- think of MPI-2's publish/lookup stuff as "DNS for
MPI". It is not intended as a general information storage/retrieval
system.

We haven't really talked about exposing the ORTE registry through other
mechanisms in the MPI API. There may be ways to do so, but that wasn't
really something that we had considered. The ORTE registry is available
if you want to go outside of the MPI API, of course (and use the ORTE
API).

> -----Original Message-----
> From: users-bounces_at_[hidden]
> [mailto:users-bounces_at_[hidden]] On Behalf Of John Robinson
> Sent: Thursday, March 30, 2006 9:25 AM
> To: rhc_at_[hidden]; Open MPI Users
> Subject: Re: [OMPI users] Connecting multiple applications
>
> Ralph,
>
> Thanks for the explanation and the pointers.
>
> One further point of clarification (is this right?):
>
> MPI provides a "registry" function using publish/lookup.
> What OpemRTE
> adds is an event mechanism so that an application does not
> have to poll
> for changes to information in the registry, plus it exposes this to
> non-MPI applications.
>
> thanks,
> /jr
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