[Mpi3-bwcompat] MPI Backward Compatibility Working Group

[Jeff Squyres jsquyres]

If we all like the text, sure - I'll make the latex changes. 

Sent from my phone. No type good. 

On Mar 13, 2011, at 2:22 PM, "Fab Tillier" <ftillier_at_[hidden]> wrote:

> Jeff, I like your wording, looks good to me.  Are you going to fix up the latex and generate new PDFs that we can send out?
> 
> -Fab
> 
> -----Original Message-----
> From: mpi3-bwcompat-bounces_at_[hidden] [mailto:mpi3-bwcompat-bounces_at_[hidden]] On Behalf Of Jeff Squyres
> Sent: Sunday, March 13, 2011 7:21 AM
> To: MPI-3 backwards compatability WG
> Subject: Re: [Mpi3-bwcompat] MPI Backward Compatibility Working Group
> 
> On Mar 11, 2011, at 6:06 PM, Solt, David George wrote:
> 
>> 2.5.8 Last sentence change to:
>> 
>> The size of the MPI_Count type is determined by the MPI implementation 
>> with the restriction that it must be minimally capable of encoding a C 
>> int and Fortran INTEGER and any value that may be stored in an MPI_Aint type.
> 
> "...and any value that may be stored in a variable of type MPI_Aint."
> 
>> Rational thingy:
> 
> Rationale.  Potatoes.  :-)
> 
>> MPI_Count is used to communicate both the number of elements in a datatype and the bounds of a datatype.
>> The number of elements in a datatype is specified at creation time using a C int or Fortran INTEGER.   The bounds
>> may be specified using an MPI_Aint. 
> 
> This is good.  I would change the wording slightly -- let's not use the verb "communicate" here:
> 
> "MPI_Count explicitly specifies the number of elements in a datatype, and therefore implicitly specifies the bounds of that datatype.  The number of elements in a datatype is specified at creation time using a C int or Fortran INTEGER.  The extent of a datatype is expressed using an MPI_Aint.
> 
> How's that?
> 
> --
> Jeff Squyres
> jsquyres_at_[hidden]
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