[MPI3 Fortran] MPI_SIZEOF question

[Rasmussen, Craig E]

STORAGE_SIZE returns the size in bits so I'm not sure it is appropriate.  I think C_SIZEOF would be better although it only works with interoperable types which I think is OK for MPI-3.  But if the object is an array, C_SIZEOF returns the length (in bytes) of the entire array.  I'm not sure what value MPI_SIZEOF is supposed to provide.  Is it related to C?

-craig


On May 23, 2011, at 12:16 PM, Jeff Squyres wrote:

> On May 23, 2011, at 10:47 AM, Bill Long wrote:
> 
>> Ultimately, I'd be inclined to just scrap the routine as redundant.
> 
> This function has been there since 1996 (i.e., MPI-2).
> 
> Is it now obsolete?  I.e., the Fortran instrinsic STORAGE_SIZE suitable?  If so, we can deprecate the old MPI_SIZEOF function and not put it in the new MPI-3 fortran module... but it still has to be implemented in the existing MPI-2 fortran "use mpi" module (even if it's deprecated).
> 
> Can you answer Rolf's questions?  I'm particularly interested in the fortran wrapper questions.
> 
> -- 
> Jeff Squyres
> jsquyres at cisco.com
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