ITHACAparallel.H

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/*---------------------------------------------------------------------------*\
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 * In real Time Highly Advanced Computational Applications for Finite Volumes
 * Copyright (C) 2017 by the ITHACA-FV authors
-------------------------------------------------------------------------------
License
    This file is part of ITHACA-FV
    ITHACA-FV 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 3 of the License, or
    (at your option) any later version.
    ITHACA-FV 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 ITHACA-FV. If not, see <http://www.gnu.org/licenses/>.
Class
    ITHACAparallel
Description
    Methods for to deal with parallel computations
SourceFiles
    ITHACAparallel.C
\*---------------------------------------------------------------------------*/
#ifndef ITHACAparallel_H
#define ITHACAparallel_H
#include "fvCFD.H"
#include "ITHACAassert.H"
 
 
class ITHACAparallel
{
        ITHACAparallel(fvMesh& mesh, Time& localTime);
 
        static ITHACAparallel* instance;
 
    public:
        static ITHACAparallel* getInstance(fvMesh& mesh, Time& localTime);
 
        static ITHACAparallel* getInstance();
 
        ITHACAparallel() = delete;
 
        static void suspendMPI();
 
        static void resumeMPI();
 
        template<class Type>
        List<List <Type>> combineFields(GeometricField<Type, fvPatchField, volMesh>&
                                        field);
 
        template<class type>
        GeometricField<type, fvPatchField, volMesh> constructGlobalField(
            GeometricField<type, fvPatchField, volMesh> field);
 
        label N_IF_glob;
 
        label N_BF;
 
        autoPtr<labelIOList> indices;
 
        autoPtr<labelIOList> indicesF;
 
        autoPtr<labelList> Gsize_BF;
 
        autoPtr< List<labelList>> IndFaceLocal;
 
        autoPtr<labelList> Lsize_BF;
 
        autoPtr<labelList> Start;
 
        static List<int> oldProcIDs_;
 
        static List<int> newProcIDs_;
 
        Time& runTime;
 
        fvMesh& mesh;
 
};
 
template<>
List<List<scalar>> ITHACAparallel::combineFields(
                    GeometricField<scalar, fvPatchField, volMesh>& field);
 
template<class type>
GeometricField<type, fvPatchField, volMesh>
ITHACAparallel::constructGlobalField(GeometricField<type, fvPatchField, volMesh>
                                     field)
{
    autoPtr<Time> globalTimePtr_;
    autoPtr<fvMesh> globalMeshPtr_;
    Time& localTime = runTime;
    fvMesh& localMesh = mesh;
    const word globalConstant = localTime.rootPath() + "/" +
                                localTime.globalCaseName() + "/constant";
    const fileName gRootPath = localTime.rootPath();
    const fileName gCaseName = localTime.globalCaseName();
    globalTimePtr_.reset
    (
        new Time
        (
            gRootPath,
            gCaseName
        )
    );
    Time& globalTime = globalTimePtr_();
    globalMeshPtr_.reset
    (
        new fvMesh
        (
            IOobject
            (
                fvMesh::defaultRegion,
                globalTime.timeName(),
                globalTime,
                IOobject::MUST_READ
            )
        )
    );
    GeometricField<type, fvPatchField, volMesh> F_glob
    (
        IOobject
        (
            field.name(),
            globalTimePtr_().timeName(),
            globalMeshPtr_(),
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
        ),
        globalMeshPtr_()
    );
    return F_glob;
}
#endif