Compiling 14 decompositionMethods with OpenMPI

gschaider · June 14, 2007, 15:40

Compiling decompositionMethods in 1.4 with OpenMPI as the MPI-implementation wouldn't work (compiled the C++-bindings where it was not supposed to do so).

Inserting the #define shown below into metisDecomp/metisDecomp.C solved the problem:

extern "C"
{
#define OMPI_SKIP_MPICXX
# include "metis.h"
}

mattijs · June 14, 2007, 18:04

Thanks. I guess this is because of the Metis and ParMetis (partially) sharing the same library files. I split off ParMetis from Metis into a separate library so the decompositionMethods library will compile without an MPI installation.

bastil · July 5, 2008, 11:35

Sorry for adding here. I have some basic questions about that: As far as I understand OF comes with "metis" partitioning, this is serial one, right? And if you recompile it with OpenMPI you can use it in parallel, eg. do parallel decomposition? Or am I wrong? Thanks.

June 14, 2007, 15:40	Compiling decompositionMethods	#1
gschaider Assistant Moderator Bernhard Gschaider Join Date: Mar 2009 Posts: 4,225 Rep Power: 51	Compiling decompositionMethods in 1.4 with OpenMPI as the MPI-implementation wouldn't work (compiled the C++-bindings where it was not supposed to do so). Inserting the #define shown below into metisDecomp/metisDecomp.C solved the problem: extern "C" { #define OMPI_SKIP_MPICXX # include "metis.h" } __________________ Note: I don't use "Friend"-feature on this forum out of principle. Ah. And by the way: I'm not on Facebook either. So don't be offended if I don't accept your invitation/friend request

June 14, 2007, 18:04	Thanks. I guess this is becaus	#2
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	Thanks. I guess this is because of the Metis and ParMetis (partially) sharing the same library files. I split off ParMetis from Metis into a separate library so the decompositionMethods library will compile without an MPI installation.

July 5, 2008, 11:35	Sorry for adding here. I have	#3
bastil Senior Member BastiL Join Date: Mar 2009 Posts: 530 Rep Power: 20	Sorry for adding here. I have some basic questions about that: As far as I understand OF comes with "metis" partitioning, this is serial one, right? And if you recompile it with OpenMPI you can use it in parallel, eg. do parallel decomposition? Or am I wrong? Thanks.

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