[Dune] what is Dune::MPIHelper::getLocalCommunicator()

Jö Fahlke jorrit at jorrit.de
Tue Oct 14 14:21:22 CEST 2014

Am Tue, 14. Oct 2014, 14:18:40 +0200 schrieb Aleksejs Fomins:
> Thank you for your reply :)
> I was interested in the context of calling ParMetis.
> Do I understand correctly, that if I call it with MPI_COMM_WORLD, I will
> allow it to communicate between all processes, and if MPI_COMM_SELF,
> then each process will only communicate to itself?
> I am just trying to understand why would anybody run parmetis with
> MPI_COMM_SELF, but I think that it is for the case where the grid is
> first constructed on the master node, so it need not communicate

That sounds about right.


Jorrit (Jö) Fahlke, Institute for Computational und Applied Mathematics,
University of Münster, Orleans-Ring 10, D-48149 Münster
Tel: +49 251 83 35146 Fax: +49 251 83 32729

Spaß mit I18N.  Hier StumpWM/clisp:
         Das Schloss umgehen und weitermachen.
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