[Mpi3-hybridpm] Reminder for telecon tomorrow

Pavan Balaji balaji at mcs.anl.gov
Wed Feb 17 03:17:23 CST 2010


I wanted to follow up on some of the discussion in the telecon yesterday.

Someone from IBM (Brian?) pointed out that how they initialize their
communication hardware on BG/P depends on how many endpoints need to be
created. Can you elaborate on this? Does initializing the hardware with
more endpoints have a performance impact, or use more memory? If not,
can't this be initialized with the maximum number of endpoints (this
information will be available at MPI_Init time)?

Not allowing any communication calls between the two phases of the split
initialization might be restrictive for users used to the MPI-2.2 kind
of semantics.

Thanks,

 -- Pavan

On 02/16/2010 09:23 PM, Pavan Balaji wrote:
> Folks,
> 
> The minutes for today's telecon are available here:
> https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid/notes-2010-02-16
> 
> Doug: can you upload your helper threads document (current version) to
> the wiki and add a link on the notes page? Also, it might be useful to
> version it, so we can follow any changes to it more easily.
> 
> Thanks,
> 
>  -- Pavan
> 
> On 02/15/2010 02:23 PM, Pavan Balaji wrote:
>> Folks,
>>
>> This is a reminder for the telecon tomorrow. The primary agenda item is
>> continue discussion on Marc's proposal.
>>
>> Doug: do you have more notes/details on the helper threads stuff? If
>> yes, we should try to make some progress on that as well.
>>
>> I'm also hoping to talk about small items that were discussed earlier,
>> but we never decided one way or the other (depending on time available).
>>
>> Telecon information is available on the hybrid wiki.
>>
>> Thanks,
>>
>>  -- Pavan
>>
> 

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji



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