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Within decomposeParDict, it is now possible to specify a different decomposition method, methods coefficients or number of subdomains for each region individually. The top-level numberOfSubdomains remains mandatory, since this specifies the number of domains for the entire simulation. The individual regions may use the same number or fewer domains. Any optional method coefficients can be specified in a general "coeffs" entry or a method-specific one, eg "metisCoeffs". For multiLevel, only the method-specific "multiLevelCoeffs" dictionary is used, and is also mandatory. ---- ENH: shortcut specification for multiLevel. In addition to the longer dictionary form, it is also possible to use a shorter notation for multiLevel decomposition when the same decomposition method applies to each level.
136 lines
3.6 KiB
C++
136 lines
3.6 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 | Copyright (C) 2017 OpenCFD Ltd.
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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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When run in parallel will collect the entire graph on to the master,
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decompose and send back.
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Coefficients dictionary: \a metisCoeffs, \a coeffs.
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\verbatim
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numberOfSubdomains N;
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method metis;
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metisCoeffs
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{
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method recursive; // k-way
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options ( ...);
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processorWeights ( ... );
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}
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\endverbatim
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Method coefficients:
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\table
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Property | Description | Required | Default
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method | recursive / k-way | no | recursive
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options | metis options | no
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processorWeights | list of weighting per partition | no
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\endtable
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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 "metisLikeDecomp.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 metisLikeDecomp
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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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virtual label decomposeSerial
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(
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const labelUList& adjncy,
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const labelUList& xadj,
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const UList<scalar>& cellWeights,
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List<label>& decomp
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);
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//- Disallow default bitwise copy construct and assignment
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void operator=(const metisDecomp&) = delete;
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metisDecomp(const metisDecomp&) = delete;
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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& decompDict);
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//- Construct given the decomposition dictionary and region name
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metisDecomp
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(
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const dictionary& decompDict,
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const word& regionName
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);
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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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return true;
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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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