/usr/include/palabos/multiGrid/parallelizer2D.h is in libplb-dev 1.5~r1+repack1-2build2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | /* This file is part of the Palabos library.
*
* Copyright (C) 2011-2015 FlowKit Sarl
* Route d'Oron 2
* 1010 Lausanne, Switzerland
* E-mail contact: contact@flowkit.com
*
* The most recent release of Palabos can be downloaded at
* <http://www.palabos.org/>
*
* The library Palabos is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* The library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* Main author: Daniel Lagrava
*/
#ifndef PARALLELIZER_2D_H
#define PARALLELIZER_2D_H
#include "core/geometry2D.h"
namespace plb {
class Parallelizer2D
{
public:
virtual ~Parallelizer2D(){}
/// Method that will choose the parallelizing approach
virtual void parallelize()=0;
virtual std::vector<std::vector<Box2D> >& getRecomputedBlocks(){
return recomputedBlocks;
}
virtual std::vector<std::vector<Box2D> > const& getRecomputedBlocks() const {
return recomputedBlocks;
}
virtual std::vector<std::vector<plint> >& getMpiDistribution(){
return finalMpiDistribution;
}
virtual std::vector<std::vector<plint> > const& getMpiDistribution() const{
return finalMpiDistribution;
}
virtual Parallelizer2D* clone()=0;
virtual void parallelizeLevel(plint whichLevel, std::vector<std::vector<Box2D> > const& originalBlocks,
std::vector<Box2D> const& parallelRegions,
std::vector<plint> const& regionIDs);
/// Computes the "cost" of the domain delimited by b
virtual plint computeCost(std::vector<std::vector<Box2D> > const& originalBlocks, Box2D b);
protected:
// the results produced by the parallelizer
std::vector<std::vector<Box2D> > recomputedBlocks;
std::vector<std::vector<plint> > finalMpiDistribution;
};
/// Parallelize by making an approximative load balancing
class ParallellizeBySquares2D : public Parallelizer2D {
public:
virtual ~ParallellizeBySquares2D(){}
ParallellizeBySquares2D(std::vector<std::vector<Box2D> > const& originalBlocks_, Box2D finestBoundingBox_,
plint xTiles, plint yTiles);
/// Compute the new distribution of the blocks in the management
virtual void parallelize();
virtual Parallelizer2D* clone(){
return new ParallellizeBySquares2D(originalBlocks,finestBoundingBox, xTiles, yTiles);
}
private:
/// Create a regular division of the finest Box2D in nx x ny squares
void computeFinestDivision(plint xTiles, plint yTiles);
private:
std::vector<std::vector<Box2D> > const& originalBlocks;
Box2D finestBoundingBox;
plint processorNumber;
plint xTiles;
plint yTiles;
// division the finest level in a number or regular squares
std::vector<Box2D> finestDivision;
// distribution w.r.t. finest division (same structure)
std::vector<plint> mpiDistribution;
};
} // namespace plb
#endif // PARALLELIZER_2D_H
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