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masterCoarsestGAMGProcAgglomeration.C
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masterCoarsestGAMGProcAgglomeration.C
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2013-2014 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "masterCoarsestGAMGProcAgglomeration.H"
#include "addToRunTimeSelectionTable.H"
#include "GAMGAgglomeration.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(masterCoarsestGAMGProcAgglomeration, 0);
addToRunTimeSelectionTable
(
GAMGProcAgglomeration,
masterCoarsestGAMGProcAgglomeration,
GAMGAgglomeration
);
}
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::masterCoarsestGAMGProcAgglomeration::masterCoarsestGAMGProcAgglomeration
(
GAMGAgglomeration& agglom,
const dictionary& controlDict
)
:
GAMGProcAgglomeration(agglom, controlDict)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::masterCoarsestGAMGProcAgglomeration::
~masterCoarsestGAMGProcAgglomeration()
{
forAllReverse(comms_, i)
{
if (comms_[i] != -1)
{
UPstream::freeCommunicator(comms_[i]);
}
}
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
bool Foam::masterCoarsestGAMGProcAgglomeration::agglomerate()
{
if (debug)
{
Pout<< nl << "Starting mesh overview" << endl;
printStats(Pout, agglom_);
}
if (agglom_.size() >= 1)
{
// Agglomerate one but last level (since also agglomerating
// restrictAddressing)
label fineLevelIndex = agglom_.size()-1;
if (agglom_.hasMeshLevel(fineLevelIndex))
{
// Get the fine mesh
const lduMesh& levelMesh = agglom_.meshLevel(fineLevelIndex);
label levelComm = levelMesh.comm();
label nProcs = UPstream::nProcs(levelComm);
if (nProcs > 1)
{
// Processor restriction map: per processor the coarse processor
labelList procAgglomMap(nProcs, 0);
// Master processor
labelList masterProcs;
// Local processors that agglomerate. agglomProcIDs[0] is in
// masterProc.
List<label> agglomProcIDs;
GAMGAgglomeration::calculateRegionMaster
(
levelComm,
procAgglomMap,
masterProcs,
agglomProcIDs
);
// Allocate a communicator for the processor-agglomerated matrix
comms_.append
(
UPstream::allocateCommunicator
(
levelComm,
masterProcs
)
);
// Use procesor agglomeration maps to do the actual collecting.
if (Pstream::myProcNo(levelComm) != -1)
{
GAMGProcAgglomeration::agglomerate
(
fineLevelIndex,
procAgglomMap,
masterProcs,
agglomProcIDs,
comms_.last()
);
}
}
}
}
// Print a bit
if (debug)
{
Pout<< nl << "Agglomerated mesh overview" << endl;
printStats(Pout, agglom_);
}
return true;
}
// ************************************************************************* //