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Subject: Re: [OMPI users] Torque and OpenMPI 1.2
From: Ralph H Castain (rhc_at_[hidden])
Date: 2007-12-19 17:17:16


It is fully implemented, but on my development branch at the moment. We hope
to bring that over to the trunk late Jan - primarily need to complete some
work on MPI-2 dynamic process management and give Josh a chance to repair
the checkpoint/restart functionality before we bring it over.

Ralph

On 12/19/07 3:07 PM, "Adams, Brian M" <briadam_at_[hidden]> wrote:

> Ralph,
>
> Thanks for the clarification as I'm dealing with workarounds for this at
> Sandia as well...
>
> I might have missed this earlier in the dialog, but is this capability
> in the SVN trunk right now, or still on the TODO list?
>
> Brian
> ----------------------------------------
> Brian M. Adams, PhD (briadam_at_[hidden])
> Optimization and Uncertainty Estimation
> Sandia National Laboratories
> P.O. Box 5800, Mail Stop 1318
> Albuquerque, NM 87185-1318
> Voice: 505-284-8845, FAX: 505-284-2518
>
>> -----Original Message-----
>> From: users-bounces_at_[hidden]
>> [mailto:users-bounces_at_[hidden]] On Behalf Of Ralph H Castain
>> Sent: Wednesday, December 19, 2007 2:35 PM
>> To: Open MPI Users <users_at_[hidden]>; pat.o'bryant_at_[hidden]
>> Cc: Castain, Ralph H. (LANL)
>> Subject: Re: [OMPI users] Torque and OpenMPI 1.2
>>
>>
>> Open MPI 1.3 will support use of the hostfile and the tm
>> launcher simultaneously. It will work slightly differently,
>> though, with respect to the hostfile:
>>
>> 1. PBS_NODEFILE will be read to obtain a complete list of
>> what has been allocated to us
>>
>> 2. you will be allowed to provide a hostfile for each
>> app_context as a separate entry to define the hosts to be
>> used for that specific app_context.
>> The hosts in your hostfile, however, must be included in the
>> PBS_NODEFILE.
>>
>> Basically, the hostfile argument will serve as a filter to
>> the hosts provided via PBS_NODEFILE. We will use the TM
>> launcher (unless, of course, you tell us to do otherwise), so
>> the issues I mentioned before will go away.
>>
>> There will be a FAQ entry describing the revised hostfile
>> behavior in some detail. We think the change will help
>> rationalize the behavior so it is more consistent across all
>> the different use-cases people have invented. ;-)
>>
>> Hope that helps
>> Ralph
>> _______________________________________________
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>>
>>
>