metisDecomp.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::metisDecomp
 
Description
    Metis domain decomposition
 
    When run in parallel will collect the entire graph on to the master,
    decompose and send back.
 
    Coefficients dictionary: \a metisCoeffs, \a coeffs.
 
    \verbatim
    numberOfSubdomains   N;
    method               metis;
 
    metisCoeffs
    {
        method           recursive;  // k-way
        options          ( ...);
        processorWeights ( ... );
    }
    \endverbatim
 
    Method coefficients:
    \table
        Property  | Description                 | Required | Default
        method    | recursive / k-way           | no | recursive
        options   | metis options               | no
        processorWeights | list of weighting per partition  | no
    \endtable
 
SourceFiles
    metisDecomp.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_metisDecomp_H
#define Foam_metisDecomp_H
 
#include "metisLikeDecomp.H"
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class metisDecomp Declaration
\*---------------------------------------------------------------------------*/
 
class metisDecomp
:
    public metisLikeDecomp
{
protected:
 
    // Protected Member Functions
 
        //- Decompose non-parallel
        virtual label decomposeSerial
        (
            const labelList& adjncy,
            const labelList& xadj,
            const List<scalar>& cellWeights,
            labelList& decomp
        ) const;
 
 
public:
 
    // Generated Methods
 
        //- No copy construct
        metisDecomp(const metisDecomp&) = delete;
 
        //- No copy assignment
        void operator=(const metisDecomp&) = delete;
 
 
    //- Runtime type information
    TypeName("metis");
 
 
    // Constructors
 
        //- Construct with number of domains (no coefficients or constraints)
        explicit metisDecomp(const label numDomains);
 
        //- Construct given decomposition dictionary and optional region name
        explicit metisDecomp
        (
            const dictionary& decompDict,
            const word& regionName = ""
        );
 
 
    //- Destructor
    virtual ~metisDecomp() = default;
 
 
    // Member Functions
 
        //- Knows about coupled boundaries
        virtual bool parallelAware() const
        {
            return true;
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //