multiLevelDecomp.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2017-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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    You should have received a copy of the GNU General Public License
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Class
    Foam::multiLevelDecomp
 
Description
    Decompose given using consecutive application of decomposers.
 
SourceFiles
    multiLevelDecomp.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef multiLevelDecomp_H
#define multiLevelDecomp_H
 
#include "decompositionMethod.H"
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                           Class multiLevelDecomp Declaration
\*---------------------------------------------------------------------------*/
 
class multiLevelDecomp
:
    public decompositionMethod
{
    // Private Data
 
        //- Original coefficients for this method
        const dictionary& coeffsDict_;
 
        //- Rewritten dictionary of individual methods
        dictionary methodsDict_;
 
        PtrList<decompositionMethod> methods_;
 
 
    // Private Member Functions
 
        //- Fill the methodsDict_
        void createMethodsDict();
 
        //- Set methods based on the contents of the methodsDict_
        void setMethods();
 
 
        //- Given connectivity across processors work out connectivity
        //  for a (consistent) subset
        void subsetGlobalCellCells
        (
            const label nDomains,
            const label domainI,
            const labelList& dist,
 
            const labelListList& cellCells,
            const labelList& set,
            labelListList& subCellCells,
            labelList& cutConnections
        ) const;
 
        //- Decompose at 'currLevel' without addressing
        void decompose
        (
            const labelListList& pointPoints,
            const pointField& points,
            const scalarField& pointWeights,
            const labelUList& pointMap,  // map back to original points
            const label currLevel,
            const label leafOffset,
 
            labelList& finalDecomp
        ) const;
 
 
        //- No copy construct
        multiLevelDecomp(const multiLevelDecomp&) = delete;
 
        //- No copy assignment
        void operator=(const multiLevelDecomp&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("multiLevel");
 
 
    // Constructors
 
        //- Construct given decomposition dictionary and optional region name
        explicit multiLevelDecomp
        (
            const dictionary& decompDict,
            const word& regionName = ""
        );
 
 
    //- Destructor
    virtual ~multiLevelDecomp() = default;
 
 
    // Member Functions
 
        //- Is method parallel aware?
        //  i.e. does it synchronize domains across proc boundaries
        virtual bool parallelAware() const;
 
        //- Inherit decompose from decompositionMethod
        using decompositionMethod::decompose;
 
        //- Return for every coordinate the wanted processor number.
        //  Use the mesh connectivity (if needed)
        virtual labelList decompose
        (
            const polyMesh& mesh,
            const pointField& points,
            const scalarField& pointWeights
        ) const;
 
        //- Return for every coordinate the wanted processor number.
        //  Explicitly provided connectivity - does not use mesh_.
        virtual labelList decompose
        (
            const labelListList& globalCellCells,
            const pointField& cc,
            const scalarField& cWeights
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //