Newsgroups: comp.parallel.mpi From: David Espadas Valladares Subject: Re: Constructing a datatype for 3D array Organization: Universidad Complutense Date: Thu, 05 Mar 1998 15:56:20 +0100 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <34FEBD14.7C76CE32@eucmos.sim.ucm.es> Yon Han CHONG wrote: > > I want to divide 3D array into 3 directions and their boundaries are > exchanged in all 3 directions. > > I would rather construct a datatype to define the potion of array to be > sent and received than to pack and unpack 3D array into 1D buffer for > communication. I did the same you want to do now a months ago, and it was just the way you explain. It is easy doing it using the Derived Datatypes provided by MPI, defining the "X", "Y", or "Z plane" datatype. Good luck. -- _______________________________________________________________________________ David Espadas Valladares Dpto. de Arquitectura de Computadores y Automatica Facultad de CC. Fisicas Universidad Complutense de Madrid Ciudad Universitaria S/N Phone: +34 1 394 43 64 28040 Madrid - SPAIN E-mail: despadas@eucmos.sim.ucm.es _______________________________________________________________________________