parallelcontext.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This program 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef parallelcontext_h
#define parallelcontext_h
 
#include "oofemenv.h"
#ifdef __MPI_PARALLEL_MODE
 #include "parallelordering.h"
#endif
 
namespace oofem {
class EngngModel;
class FloatArray;
class DofManager;

class OOFEM_EXPORT ParallelContext
{
protected:
    int di;
    EngngModel *emodel;
#ifdef __MPI_PARALLEL_MODE
    Natural2GlobalOrdering n2g;
    Natural2LocalOrdering n2l;
#endif
 
public:
    ParallelContext(EngngModel * e);
    ~ParallelContext();

    void init(int newDi);
 
    int giveNumberOfLocalEqs();
    int giveNumberOfGlobalEqs();
    int giveNumberOfNaturalEqs();


    bool isLocal(DofManager *dman);
    double localNorm(const FloatArray &src);

    double dotProduct(const FloatArray &a, const FloatArray &b);
    double localDotProduct(const FloatArray &a, const FloatArray &b);
    double accumulate(double local);
    void accumulate(const FloatArray &local, FloatArray &global);
 
#ifdef __MPI_PARALLEL_MODE
    Natural2GlobalOrdering *giveN2Gmap() { return & n2g; }
    Natural2LocalOrdering *giveN2Lmap() { return & n2l; }
#endif
};
} // end namespace oofem
 
#endif // parallelcontext_h