On Jul 8, 2010, at 12:26 PM, Fab Tillier wrote:

...

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

But they are the same for the MPI_PACKED datatype, so really shouldn't be different.

...and let's not forget that MPI_Aint's are used for displacements in MPI_GEt, MPI_PUT, and MPI_ACCUMULATE. :-\ Should we disentangle those, too?

As an aside, can count ever be larger than size_t?

I don't think so, but why do you ask? -- Jeff Squyres jsquyres_at_[hidden] For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/