146 lines
4.4 KiB
C++
146 lines
4.4 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::metisDecomp
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Description
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Metis domain decomposition
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SourceFiles
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metisDecomp.C
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\*---------------------------------------------------------------------------*/
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#ifndef metisDecomp_H
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#define metisDecomp_H
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#include "decompositionMethod.H"
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class metisDecomp Declaration
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\*---------------------------------------------------------------------------*/
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class metisDecomp
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:
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public decompositionMethod
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{
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// Private Member Functions
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//- Call Metis with options from dictionary.
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label decompose
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(
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const List<label>& adjncy,
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const List<label>& xadj,
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const scalarField& cellWeights,
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List<label>& finalDecomp
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);
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//- Disallow default bitwise copy construct and assignment
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void operator=(const metisDecomp&);
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metisDecomp(const metisDecomp&);
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public:
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//- Runtime type information
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TypeName("metis");
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// Constructors
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//- Construct given the decomposition dictionary
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metisDecomp(const dictionary&);
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//- Destructor
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virtual ~metisDecomp()
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{}
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// Member Functions
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virtual bool parallelAware() const
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{
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// Metis does not know about proc boundaries
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return false;
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}
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//- Inherit decompose from decompositionMethod
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using decompositionMethod::decompose;
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//- Return for every coordinate the wanted processor number. Use the
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// mesh connectivity (if needed)
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// Weights get normalised so the minimum value is 1 before truncation
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// to an integer so the weights should be multiples of the minimum
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// value. The overall sum of weights might otherwise overflow.
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virtual labelList decompose
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(
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const polyMesh& mesh,
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const pointField& points,
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const scalarField& pointWeights
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);
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//- Return for every coordinate the wanted processor number. Gets
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// passed agglomeration map (from fine to coarse cells) and coarse cell
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// location. Can be overridden by decomposers that provide this
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// functionality natively.
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// See note on weights above.
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virtual labelList decompose
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(
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const polyMesh& mesh,
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const labelList& agglom,
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const pointField& regionPoints,
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const scalarField& regionWeights
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);
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//- Return for every coordinate the wanted processor number. Explicitly
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// provided mesh connectivity.
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// The connectivity is equal to mesh.cellCells() except for
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// - in parallel the cell numbers are global cell numbers (starting
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// from 0 at processor0 and then incrementing all through the
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// processors)
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// - the connections are across coupled patches
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// See note on weights above.
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virtual labelList decompose
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(
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const labelListList& globalCellCells,
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const pointField& cc,
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const scalarField& cWeights
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);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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