[MPI3 Fortran] Request for a straw vote.

Jeff Squyres jsquyres at cisco.com
Tue Jun 23 07:16:55 CDT 2009

On Jun 23, 2009, at 3:45 AM, Supalov, Alexander wrote:

> Re 12: what if an array section is passed as an actual buffer  
> argument (i.e., a potentially noncontiguous area), and the MPI  
> datatype describes the data as such? Will the new interface avoid  
> copy-in/out?

Clearly, the interface has to allow this to work properly.

Regardless of whether the MPI gets the descriptor and figures out the  
mapping, or whether it inhibits copying, or ...<something else>...,  
the interface has to allow non-contiguous buffers to be passed and  
work properly.

Jeff Squyres
Cisco Systems

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