[Mpi3-bwcompat] MPI_Count mixing with int...

[Quincey Koziol]

On Jul 7, 2010, at 8:16 AM, Rajeev Thakur wrote:

> Can we define both (to be the same) since we are familiar with count for
> messages (it is a count of datatypes) and size for others.

        I agree - we shouldn't conflate counts and sizes, they are totally different things.  Defining them both makes sense to me.

        Quincey

> Rajeev 
> 
>> -----Original Message-----
>> From: mpi3-bwcompat-bounces_at_[hidden] 
>> [mailto:mpi3-bwcompat-bounces_at_[hidden]] On Behalf Of Jeff Squyres
>> Sent: Wednesday, July 07, 2010 7:24 AM
>> To: MPI-3 backwards compatability WG
>> Subject: Re: [Mpi3-bwcompat] MPI_Count mixing with int...
>> 
>> On Jul 7, 2010, at 2:23 AM, Fab Tillier wrote:
>> 
>>> Would anyone object if we defined MPI_Size rather than 
>> MPI_Count, and used it for count, position, and size 
>> parameters?  We could then tackle the issues with 
>> MPI_Pack/Unpack/Pack_size/Type_size at the same time as 
>> counts.  We can't use MPI_Aint here since we want to be able 
>> to be backward compatible, so must provide a separate type 
>> that can be defined as a standard integer.
>> 
>> I agree that tackling them all at the same time is the Right 
>> Thing to do.  I also agree with all your other points.
>> 
>> I still am a little uncomfortable with the name "MPI_Size" 
>> because sizes and counts are theoretically different things.  
>> But then again, I can't think of a better name offhand...
>> 
>> --
>> Jeff Squyres
>> jsquyres_at_[hidden]
>> For corporate legal information go to:
>> http://www.cisco.com/web/about/doing_business/legal/cri/
>> 
>> 
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