1352 lines
43 KiB
C
1352 lines
43 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 3.2
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "faMeshDecomposition.H"
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#include "foamTime.H"
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#include "dictionary.H"
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#include "labelIOList.H"
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#include "processorFaPatch.H"
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#include "faMesh.H"
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#include "OSspecific.H"
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#include "Map.H"
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#include "globalMeshData.H"
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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void faMeshDecomposition::distributeFaces()
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{
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Info<< "\nCalculating distribution of faces" << endl;
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cpuTime decompositionTime;
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for (label procI = 0; procI < nProcs(); procI++)
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{
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Time processorDb
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(
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Time::controlDictName,
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time().rootPath(),
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time().caseName()/fileName(word("processor") + Foam::name(procI))
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);
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fvMesh procMesh
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(
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IOobject
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(
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fvMesh::defaultRegion,
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processorDb.timeName(),
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processorDb
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)
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);
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labelHashSet faceProcAddressingHash
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(
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labelIOList
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(
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IOobject
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(
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"faceProcAddressing",
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"constant",
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procMesh.meshSubDir,
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procMesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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)
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)
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);
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forAll (faceLabels(), faceI)
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{
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if (faceProcAddressingHash.found(faceLabels()[faceI] + 1))
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{
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faceToProc_[faceI] = procI;
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}
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}
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}
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Info<< "\nFinished decomposition in "
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<< decompositionTime.elapsedCpuTime()
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<< " s" << endl;
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// from components
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faMeshDecomposition::faMeshDecomposition(const fvMesh& mesh)
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:
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faMesh(mesh),
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decompositionDict_
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(
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IOobject
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(
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"decomposeParDict",
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time().system(),
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mesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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)
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),
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nProcs_(readInt(decompositionDict_.lookup("numberOfSubdomains"))),
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distributed_(false),
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faceToProc_(nFaces()),
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procFaceLabels_(nProcs_),
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procMeshEdgesMap_(nProcs_),
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procNInternalEdges_(nProcs_, 0),
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procPatchEdgeLabels_(nProcs_),
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procPatchPointAddressing_(nProcs_),
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procPatchEdgeAddressing_(nProcs_),
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procEdgeAddressing_(nProcs_),
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procFaceAddressing_(nProcs_),
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procBoundaryAddressing_(nProcs_),
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procPatchSize_(nProcs_),
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procPatchStartIndex_(nProcs_),
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procNeighbourProcessors_(nProcs_),
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procProcessorPatchSize_(nProcs_),
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procProcessorPatchStartIndex_(nProcs_),
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globallySharedPoints_(0),
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cyclicParallel_(false)
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{
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if (decompositionDict_.found("distributed"))
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{
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distributed_ = Switch(decompositionDict_.lookup("distributed"));
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}
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}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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faMeshDecomposition::~faMeshDecomposition()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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void faMeshDecomposition::decomposeMesh(const bool filterEmptyPatches)
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{
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// Decide which cell goes to which processor
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distributeFaces();
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Info<< "\nDistributing faces to processors" << endl;
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// Memory management
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{
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List<SLList<label> > procFaceList(nProcs());
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forAll (faceToProc_, faceI)
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{
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if (faceToProc_[faceI] >= nProcs())
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{
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FatalErrorIn("Finite area mesh decomposition")
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<< "Impossible processor label " << faceToProc_[faceI]
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<< "for face " << faceI
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<< abort(FatalError);
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}
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else
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{
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procFaceList[faceToProc_[faceI]].append(faceI);
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}
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}
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// Convert linked lists into normal lists
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forAll (procFaceList, procI)
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{
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procFaceAddressing_[procI] = procFaceList[procI];
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}
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}
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// Find processor mesh faceLabels and ...
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for (label procI = 0; procI < nProcs(); procI++)
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{
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Time processorDb
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(
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Time::controlDictName,
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time().rootPath(),
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time().caseName()/fileName(word("processor") + Foam::name(procI))
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);
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fvMesh procFvMesh
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(
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IOobject
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(
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fvMesh::defaultRegion,
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processorDb.timeName(),
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processorDb
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)
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);
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labelIOList fvPointProcAddressing
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(
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IOobject
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(
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"pointProcAddressing",
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"constant",
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procFvMesh.meshSubDir,
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procFvMesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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)
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);
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HashTable<label, label, Hash<label> > fvFaceProcAddressingHash;
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{
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labelIOList fvFaceProcAddressing
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(
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IOobject
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(
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"faceProcAddressing",
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"constant",
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procFvMesh.meshSubDir,
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procFvMesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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)
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);
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forAll(fvFaceProcAddressing, faceI)
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{
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fvFaceProcAddressingHash.insert
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(
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fvFaceProcAddressing[faceI], faceI
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);
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}
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};
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const labelList& curProcFaceAddressing = procFaceAddressing_[procI];
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labelList& curFaceLabels = procFaceLabels_[procI];
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curFaceLabels = labelList(curProcFaceAddressing.size(), -1);
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forAll(curProcFaceAddressing, faceI)
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{
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curFaceLabels[faceI] =
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fvFaceProcAddressingHash.find
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(
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faceLabels()[curProcFaceAddressing[faceI]] + 1
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)();
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}
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// create processor finite area mesh
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faMesh procMesh
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(
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procFvMesh,
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procFaceLabels_[procI]
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);
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const indirectPrimitivePatch& patch = this->patch();
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const Map<label>& map = patch.meshPointMap();
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HashTable<label, edge, Hash<edge> > edgesHash;
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label edgeI = -1;
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label nIntEdges = patch.nInternalEdges();
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for (label curEdge = 0; curEdge < nIntEdges; curEdge++)
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{
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edgesHash.insert(patch.edges()[curEdge], ++edgeI);
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}
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forAll (boundary(), patchI)
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{
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// Include emptyFaPatch
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label size = boundary()[patchI].labelList::size();
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for(int eI=0; eI<size; eI++)
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{
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edgesHash.insert(patch.edges()[boundary()[patchI][eI]], ++edgeI);
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}
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}
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const indirectPrimitivePatch& procPatch = procMesh.patch();
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const vectorField& procPoints = procPatch.localPoints();
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const labelList& procMeshPoints = procPatch.meshPoints();
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const edgeList& procEdges = procPatch.edges();
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labelList& curPatchPointAddressing = procPatchPointAddressing_[procI];
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curPatchPointAddressing.setSize(procPoints.size(), -1);
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forAll(procPoints, pointI)
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{
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curPatchPointAddressing[pointI] =
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map[fvPointProcAddressing[procMeshPoints[pointI]]];
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}
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labelList& curPatchEdgeAddressing = procPatchEdgeAddressing_[procI];
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curPatchEdgeAddressing.setSize(procEdges.size(), -1);
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forAll(procEdges, edgeI)
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{
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edge curGlobalEdge = procEdges[edgeI];
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curGlobalEdge[0] = curPatchPointAddressing[curGlobalEdge[0]];
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curGlobalEdge[1] = curPatchPointAddressing[curGlobalEdge[1]];
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curPatchEdgeAddressing[edgeI] = edgesHash.find(curGlobalEdge)();
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}
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Map<label>& curMap = procMeshEdgesMap_[procI];
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curMap = Map<label>(2*procEdges.size());
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forAll(curPatchEdgeAddressing, edgeI)
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{
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curMap.insert(curPatchEdgeAddressing[edgeI], edgeI);
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}
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procNInternalEdges_[procI] = procPatch.nInternalEdges();
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}
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Info << "\nDistributing edges to processors" << endl;
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// Loop through all internal edges and decide which processor they
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// belong to. First visit all internal edges.
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// set references to the original mesh
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const faBoundaryMesh& patches = boundary();
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const edgeList& edges = this->edges();
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const labelList& owner = edgeOwner();
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const labelList& neighbour = edgeNeighbour();
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// Memory management
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{
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List<SLList<label> > procEdgeList(nProcs());
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forAll(procEdgeList, procI)
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{
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for(label i=0; i<procNInternalEdges_[procI]; i++)
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{
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procEdgeList[procI].append(procPatchEdgeAddressing_[procI][i]);
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}
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}
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// Detect inter-processor boundaries
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// Neighbour processor for each subdomain
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List<SLList<label> > interProcBoundaries(nProcs());
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// Edge labels belonging to each inter-processor boundary
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List<SLList<SLList<label> > > interProcBEdges(nProcs());
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List<SLList<label> > procPatchIndex(nProcs());
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forAll (neighbour, edgeI)
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{
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if (faceToProc_[owner[edgeI]] != faceToProc_[neighbour[edgeI]])
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{
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// inter - processor patch edge found. Go through the list of
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// inside boundaries for the owner processor and try to find
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// this inter-processor patch.
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label ownerProc = faceToProc_[owner[edgeI]];
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label neighbourProc = faceToProc_[neighbour[edgeI]];
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SLList<label>::iterator curInterProcBdrsOwnIter =
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interProcBoundaries[ownerProc].begin();
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SLList<SLList<label> >::iterator curInterProcBEdgesOwnIter =
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interProcBEdges[ownerProc].begin();
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bool interProcBouFound = false;
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// WARNING: Synchronous SLList iterators
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for
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(
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;
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curInterProcBdrsOwnIter
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!= interProcBoundaries[ownerProc].end()
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&& curInterProcBEdgesOwnIter
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!= interProcBEdges[ownerProc].end();
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++curInterProcBdrsOwnIter, ++curInterProcBEdgesOwnIter
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)
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{
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if (curInterProcBdrsOwnIter() == neighbourProc)
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{
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// the inter - processor boundary exists. Add the face
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interProcBouFound = true;
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curInterProcBEdgesOwnIter().append(edgeI);
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SLList<label>::iterator curInterProcBdrsNeiIter =
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interProcBoundaries[neighbourProc].begin();
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SLList<SLList<label> >::iterator
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curInterProcBEdgesNeiIter =
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interProcBEdges[neighbourProc].begin();
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bool neighbourFound = false;
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// WARNING: Synchronous SLList iterators
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for
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(
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;
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curInterProcBdrsNeiIter !=
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interProcBoundaries[neighbourProc].end()
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&& curInterProcBEdgesNeiIter !=
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interProcBEdges[neighbourProc].end();
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++curInterProcBdrsNeiIter,
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++curInterProcBEdgesNeiIter
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)
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{
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if (curInterProcBdrsNeiIter() == ownerProc)
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{
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// boundary found. Add the face
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neighbourFound = true;
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curInterProcBEdgesNeiIter().append(edgeI);
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}
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if (neighbourFound) break;
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}
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if (interProcBouFound && !neighbourFound)
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{
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FatalErrorIn
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("faDomainDecomposition::decomposeMesh()")
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<< "Inconsistency in inter - "
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<< "processor boundary lists for processors "
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<< ownerProc << " and " << neighbourProc
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<< abort(FatalError);
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}
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}
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if (interProcBouFound) break;
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}
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if (!interProcBouFound)
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{
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// inter - processor boundaries do not exist and need to
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// be created
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// set the new addressing information
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// owner
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interProcBoundaries[ownerProc].append(neighbourProc);
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interProcBEdges[ownerProc].append(SLList<label>(edgeI));
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// neighbour
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interProcBoundaries[neighbourProc].append(ownerProc);
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interProcBEdges[neighbourProc].append
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(
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SLList<label>(edgeI)
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);
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}
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}
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}
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// Loop through patches. For cyclic boundaries detect inter-processor
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// edges; for all other, add edges to the edge list and remember start
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// and size of all patches.
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// for all processors, set the size of start index and patch size
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// lists to the number of patches in the mesh
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forAll (procPatchSize_, procI)
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{
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procPatchSize_[procI].setSize(patches.size());
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procPatchStartIndex_[procI].setSize(patches.size());
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}
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forAll (patches, patchI)
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{
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// Reset size and start index for all processors
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forAll (procPatchSize_, procI)
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{
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procPatchSize_[procI][patchI] = 0;
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procPatchStartIndex_[procI][patchI] =
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procEdgeList[procI].size();
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}
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const label patchStart = patches[patchI].start();
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// if (typeid(patches[patchI]) != typeid(cyclicFaPatch))
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if (true)
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{
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// Normal patch. Add edges to processor where the face
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// next to the edge lives
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const labelListList& eF = patch().edgeFaces();
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label size = patches[patchI].labelList::size();
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labelList patchEdgeFaces(size, -1);
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for(int eI=0; eI<size; eI++)
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{
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patchEdgeFaces[eI] = eF[patches[patchI][eI]][0];
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}
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forAll (patchEdgeFaces, edgeI)
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{
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const label curProc = faceToProc_[patchEdgeFaces[edgeI]];
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// add the face
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procEdgeList[curProc].append(patchStart + edgeI);
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// increment the number of edges for this patch
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procPatchSize_[curProc][patchI]++;
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}
|
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}
|
|
else
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{
|
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// Cyclic patch special treatment
|
|
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const faPatch& cPatch = patches[patchI];
|
|
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|
const label cycOffset = cPatch.size()/2;
|
|
|
|
// Set reference to faceCells for both patches
|
|
const labelList::subList firstEdgeFaces
|
|
(
|
|
cPatch.edgeFaces(),
|
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cycOffset
|
|
);
|
|
|
|
const labelList::subList secondEdgeFaces
|
|
(
|
|
cPatch.edgeFaces(),
|
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cycOffset,
|
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cycOffset
|
|
);
|
|
|
|
forAll (firstEdgeFaces, edgeI)
|
|
{
|
|
if
|
|
(
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|
faceToProc_[firstEdgeFaces[edgeI]]
|
|
!= faceToProc_[secondEdgeFaces[edgeI]]
|
|
)
|
|
{
|
|
// This edge becomes an inter-processor boundary edge
|
|
// inter - processor patch edge found. Go through
|
|
// the list of inside boundaries for the owner
|
|
// processor and try to find this inter-processor
|
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// patch.
|
|
|
|
cyclicParallel_ = true;
|
|
|
|
label ownerProc = faceToProc_[firstEdgeFaces[edgeI]];
|
|
label neighbourProc =
|
|
faceToProc_[secondEdgeFaces[edgeI]];
|
|
|
|
SLList<label>::iterator curInterProcBdrsOwnIter =
|
|
interProcBoundaries[ownerProc].begin();
|
|
|
|
SLList<SLList<label> >::iterator
|
|
curInterProcBEdgesOwnIter =
|
|
interProcBEdges[ownerProc].begin();
|
|
|
|
bool interProcBouFound = false;
|
|
|
|
// WARNING: Synchronous SLList iterators
|
|
|
|
for
|
|
(
|
|
;
|
|
curInterProcBdrsOwnIter !=
|
|
interProcBoundaries[ownerProc].end()
|
|
&& curInterProcBEdgesOwnIter !=
|
|
interProcBEdges[ownerProc].end();
|
|
++curInterProcBdrsOwnIter,
|
|
++curInterProcBEdgesOwnIter
|
|
)
|
|
{
|
|
if (curInterProcBdrsOwnIter() == neighbourProc)
|
|
{
|
|
// the inter - processor boundary exists.
|
|
// Add the face
|
|
interProcBouFound = true;
|
|
|
|
curInterProcBEdgesOwnIter().append
|
|
(patchStart + edgeI);
|
|
|
|
SLList<label>::iterator curInterProcBdrsNeiIter
|
|
= interProcBoundaries[neighbourProc].begin();
|
|
|
|
SLList<SLList<label> >::iterator
|
|
curInterProcBEdgesNeiIter =
|
|
interProcBEdges[neighbourProc].begin();
|
|
|
|
bool neighbourFound = false;
|
|
|
|
// WARNING: Synchronous SLList iterators
|
|
|
|
for
|
|
(
|
|
;
|
|
curInterProcBdrsNeiIter
|
|
!= interProcBoundaries[neighbourProc].end()
|
|
&& curInterProcBEdgesNeiIter
|
|
!= interProcBEdges[neighbourProc].end();
|
|
++curInterProcBdrsNeiIter,
|
|
++curInterProcBEdgesNeiIter
|
|
)
|
|
{
|
|
if (curInterProcBdrsNeiIter() == ownerProc)
|
|
{
|
|
// boundary found. Add the face
|
|
neighbourFound = true;
|
|
|
|
curInterProcBEdgesNeiIter()
|
|
.append
|
|
(
|
|
patchStart
|
|
+ cycOffset
|
|
+ edgeI
|
|
);
|
|
}
|
|
|
|
if (neighbourFound) break;
|
|
}
|
|
|
|
if (interProcBouFound && !neighbourFound)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"faDomainDecomposition::decomposeMesh()"
|
|
) << "Inconsistency in inter-processor "
|
|
<< "boundary lists for processors "
|
|
<< ownerProc << " and " << neighbourProc
|
|
<< " in cyclic boundary matching"
|
|
<< abort(FatalError);
|
|
}
|
|
}
|
|
|
|
if (interProcBouFound) break;
|
|
}
|
|
|
|
if (!interProcBouFound)
|
|
{
|
|
// inter - processor boundaries do not exist
|
|
// and need to be created
|
|
|
|
// set the new addressing information
|
|
|
|
// owner
|
|
interProcBoundaries[ownerProc]
|
|
.append(neighbourProc);
|
|
interProcBEdges[ownerProc]
|
|
.append(SLList<label>(patchStart + edgeI));
|
|
|
|
// neighbour
|
|
interProcBoundaries[neighbourProc]
|
|
.append(ownerProc);
|
|
interProcBEdges[neighbourProc]
|
|
.append
|
|
(
|
|
SLList<label>
|
|
(
|
|
patchStart
|
|
+ cycOffset
|
|
+ edgeI
|
|
)
|
|
);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// This cyclic edge remains on the processor
|
|
label ownerProc = faceToProc_[firstEdgeFaces[edgeI]];
|
|
|
|
// add the edge
|
|
procEdgeList[ownerProc].append(patchStart + edgeI);
|
|
|
|
// increment the number of edges for this patch
|
|
procPatchSize_[ownerProc][patchI]++;
|
|
|
|
// Note: I cannot add the other side of the cyclic
|
|
// boundary here because this would violate the order.
|
|
// They will be added in a separate loop below
|
|
}
|
|
}
|
|
|
|
// Ordering in cyclic boundaries is important.
|
|
// Add the other half of cyclic edges for cyclic boundaries
|
|
// that remain on the processor
|
|
forAll (secondEdgeFaces, edgeI)
|
|
{
|
|
if
|
|
(
|
|
faceToProc_[firstEdgeFaces[edgeI]]
|
|
== faceToProc_[secondEdgeFaces[edgeI]]
|
|
)
|
|
{
|
|
// This cyclic edge remains on the processor
|
|
label ownerProc = faceToProc_[firstEdgeFaces[edgeI]];
|
|
|
|
// add the second edge
|
|
procEdgeList[ownerProc].append
|
|
(patchStart + cycOffset + edgeI);
|
|
|
|
// increment the number of edges for this patch
|
|
procPatchSize_[ownerProc][patchI]++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Convert linked lists into normal lists
|
|
// Add inter-processor boundaries and remember start indices
|
|
forAll (procEdgeList, procI)
|
|
{
|
|
// Get internal and regular boundary processor faces
|
|
SLList<label>& curProcEdges = procEdgeList[procI];
|
|
|
|
// Get reference to processor edge addressing
|
|
labelList& curProcEdgeAddressing = procEdgeAddressing_[procI];
|
|
|
|
labelList& curProcNeighbourProcessors =
|
|
procNeighbourProcessors_[procI];
|
|
|
|
labelList& curProcProcessorPatchSize =
|
|
procProcessorPatchSize_[procI];
|
|
|
|
labelList& curProcProcessorPatchStartIndex =
|
|
procProcessorPatchStartIndex_[procI];
|
|
|
|
// calculate the size
|
|
label nEdgesOnProcessor = curProcEdges.size();
|
|
|
|
for
|
|
(
|
|
SLList<SLList<label> >::iterator curInterProcBEdgesIter =
|
|
interProcBEdges[procI].begin();
|
|
curInterProcBEdgesIter != interProcBEdges[procI].end();
|
|
++curInterProcBEdgesIter
|
|
)
|
|
{
|
|
nEdgesOnProcessor += curInterProcBEdgesIter().size();
|
|
}
|
|
|
|
curProcEdgeAddressing.setSize(nEdgesOnProcessor);
|
|
|
|
// Fill in the list. Calculate turning index.
|
|
// Turning index will be -1 only for some edges on processor
|
|
// boundaries, i.e. the ones where the current processor ID
|
|
// is in the face which is a edge neighbour.
|
|
// Turning index is stored as the sign of the edge addressing list
|
|
|
|
label nEdges = 0;
|
|
|
|
// Add internal and boundary edges
|
|
// Remember to increment the index by one such that the
|
|
// turning index works properly.
|
|
for
|
|
(
|
|
SLList<label>::iterator curProcEdgeIter = curProcEdges.begin();
|
|
curProcEdgeIter != curProcEdges.end();
|
|
++curProcEdgeIter
|
|
)
|
|
{
|
|
curProcEdgeAddressing[nEdges] = curProcEdgeIter();
|
|
// curProcEdgeAddressing[nEdges] = curProcEdgeIter() + 1;
|
|
nEdges++;
|
|
}
|
|
|
|
// Add inter-processor boundary edges. At the beginning of each
|
|
// patch, grab the patch start index and size
|
|
|
|
curProcNeighbourProcessors.setSize
|
|
(
|
|
interProcBoundaries[procI].size()
|
|
);
|
|
|
|
curProcProcessorPatchSize.setSize
|
|
(
|
|
interProcBoundaries[procI].size()
|
|
);
|
|
|
|
curProcProcessorPatchStartIndex.setSize
|
|
(
|
|
interProcBoundaries[procI].size()
|
|
);
|
|
|
|
label nProcPatches = 0;
|
|
|
|
SLList<label>::iterator curInterProcBdrsIter =
|
|
interProcBoundaries[procI].begin();
|
|
|
|
SLList<SLList<label> >::iterator curInterProcBEdgesIter =
|
|
interProcBEdges[procI].begin();
|
|
|
|
for
|
|
(
|
|
;
|
|
curInterProcBdrsIter != interProcBoundaries[procI].end()
|
|
&& curInterProcBEdgesIter != interProcBEdges[procI].end();
|
|
++curInterProcBdrsIter, ++curInterProcBEdgesIter
|
|
)
|
|
{
|
|
curProcNeighbourProcessors[nProcPatches] =
|
|
curInterProcBdrsIter();
|
|
|
|
// Get start index for processor patch
|
|
curProcProcessorPatchStartIndex[nProcPatches] = nEdges;
|
|
|
|
label& curSize =
|
|
curProcProcessorPatchSize[nProcPatches];
|
|
|
|
curSize = 0;
|
|
|
|
// add faces for this processor boundary
|
|
|
|
for
|
|
(
|
|
SLList<label>::iterator curEdgesIter =
|
|
curInterProcBEdgesIter().begin();
|
|
curEdgesIter != curInterProcBEdgesIter().end();
|
|
++curEdgesIter
|
|
)
|
|
{
|
|
// add the edges
|
|
|
|
// Remember to increment the index by one such that the
|
|
// turning index works properly.
|
|
if (faceToProc_[owner[curEdgesIter()]] == procI)
|
|
{
|
|
curProcEdgeAddressing[nEdges] = curEdgesIter();
|
|
// curProcEdgeAddressing[nEdges] = curEdgesIter() + 1;
|
|
}
|
|
else
|
|
{
|
|
// turning edge
|
|
curProcEdgeAddressing[nEdges] = curEdgesIter();
|
|
// curProcEdgeAddressing[nEdges] = -(curEdgesIter() + 1);
|
|
}
|
|
|
|
// increment the size
|
|
curSize++;
|
|
|
|
nEdges++;
|
|
}
|
|
|
|
nProcPatches++;
|
|
}
|
|
}
|
|
}
|
|
|
|
Info << "\nCalculating processor boundary addressing" << endl;
|
|
// For every patch of processor boundary, find the index of the original
|
|
// patch. Mis-alignment is caused by the fact that patches with zero size
|
|
// are omitted. For processor patches, set index to -1.
|
|
// At the same time, filter the procPatchSize_ and procPatchStartIndex_
|
|
// lists to exclude zero-size patches
|
|
forAll (procPatchSize_, procI)
|
|
{
|
|
// Make a local copy of old lists
|
|
const labelList oldPatchSizes = procPatchSize_[procI];
|
|
|
|
const labelList oldPatchStarts = procPatchStartIndex_[procI];
|
|
|
|
labelList& curPatchSizes = procPatchSize_[procI];
|
|
|
|
labelList& curPatchStarts = procPatchStartIndex_[procI];
|
|
|
|
const labelList& curProcessorPatchSizes =
|
|
procProcessorPatchSize_[procI];
|
|
|
|
labelList& curBoundaryAddressing = procBoundaryAddressing_[procI];
|
|
|
|
curBoundaryAddressing.setSize
|
|
(
|
|
oldPatchSizes.size()
|
|
+ curProcessorPatchSizes.size()
|
|
);
|
|
|
|
label nPatches = 0;
|
|
|
|
forAll (oldPatchSizes, patchI)
|
|
{
|
|
if (!filterEmptyPatches || oldPatchSizes[patchI] > 0)
|
|
{
|
|
curBoundaryAddressing[nPatches] = patchI;
|
|
|
|
curPatchSizes[nPatches] = oldPatchSizes[patchI];
|
|
|
|
curPatchStarts[nPatches] = oldPatchStarts[patchI];
|
|
|
|
nPatches++;
|
|
}
|
|
}
|
|
|
|
// reset to the size of live patches
|
|
curPatchSizes.setSize(nPatches);
|
|
curPatchStarts.setSize(nPatches);
|
|
|
|
forAll (curProcessorPatchSizes, procPatchI)
|
|
{
|
|
curBoundaryAddressing[nPatches] = -1;
|
|
|
|
nPatches++;
|
|
}
|
|
|
|
curBoundaryAddressing.setSize(nPatches);
|
|
}
|
|
|
|
|
|
// Gather data about globally shared points
|
|
|
|
labelList globallySharedPoints_(0);
|
|
|
|
// Memory management
|
|
{
|
|
labelList pointsUsage(nPoints(), 0);
|
|
|
|
// Globally shared points are the ones used by more than 2 processors
|
|
// Size the list approximately and gather the points
|
|
labelHashSet gSharedPoints
|
|
(
|
|
min(100, nPoints()/1000)
|
|
);
|
|
|
|
// Loop through all the processors and mark up points used by
|
|
// processor boundaries. When a point is used twice, it is a
|
|
// globally shared point
|
|
|
|
for (label procI = 0; procI < nProcs(); procI++)
|
|
{
|
|
// Get list of edge labels
|
|
const labelList& curEdgeLabels = procEdgeAddressing_[procI];
|
|
|
|
// Get start of processor faces
|
|
const labelList& curProcessorPatchStarts =
|
|
procProcessorPatchStartIndex_[procI];
|
|
|
|
const labelList& curProcessorPatchSizes =
|
|
procProcessorPatchSize_[procI];
|
|
|
|
// Reset the lookup list
|
|
pointsUsage = 0;
|
|
|
|
forAll (curProcessorPatchStarts, patchI)
|
|
{
|
|
const label curStart = curProcessorPatchStarts[patchI];
|
|
const label curEnd = curStart + curProcessorPatchSizes[patchI];
|
|
|
|
for
|
|
(
|
|
label edgeI = curStart;
|
|
edgeI < curEnd;
|
|
edgeI++
|
|
)
|
|
{
|
|
// Mark the original edge as used
|
|
// Remember to decrement the index by one (turning index)
|
|
const label curE = curEdgeLabels[edgeI];
|
|
|
|
const edge& e = edges[curE];
|
|
|
|
forAll (e, pointI)
|
|
{
|
|
if (pointsUsage[e[pointI]] == 0)
|
|
{
|
|
// Point not previously used
|
|
pointsUsage[e[pointI]] = patchI + 1;
|
|
}
|
|
else if (pointsUsage[e[pointI]] != patchI + 1)
|
|
{
|
|
// Point used by some other patch = global point!
|
|
gSharedPoints.insert(e[pointI]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Grab the result from the hash list
|
|
globallySharedPoints_ = gSharedPoints.toc();
|
|
sort(globallySharedPoints_);
|
|
}
|
|
|
|
|
|
// Edge label for faPatches
|
|
|
|
for (label procI = 0; procI < nProcs(); procI++)
|
|
{
|
|
fileName processorCasePath
|
|
(
|
|
time().caseName()/fileName(word("processor")
|
|
+ Foam::name(procI))
|
|
);
|
|
|
|
// create a database
|
|
Time processorDb
|
|
(
|
|
Time::controlDictName,
|
|
time().rootPath(),
|
|
processorCasePath
|
|
);
|
|
|
|
|
|
// read finite volume mesh
|
|
fvMesh procFvMesh
|
|
(
|
|
IOobject
|
|
(
|
|
fvMesh::defaultRegion,
|
|
processorDb.timeName(),
|
|
processorDb
|
|
)
|
|
);
|
|
|
|
// create finite area mesh
|
|
faMesh procMesh
|
|
(
|
|
procFvMesh,
|
|
procFaceLabels_[procI]
|
|
);
|
|
|
|
|
|
const labelList& curEdgeAddressing = procEdgeAddressing_[procI];
|
|
|
|
const labelList& curPatchStartIndex = procPatchStartIndex_[procI];
|
|
const labelList& curPatchSize = procPatchSize_[procI];
|
|
|
|
const labelList& curProcessorPatchStartIndex =
|
|
procProcessorPatchStartIndex_[procI];
|
|
|
|
const labelList& curProcessorPatchSize =
|
|
procProcessorPatchSize_[procI];
|
|
|
|
labelListList& curPatchEdgeLabels = procPatchEdgeLabels_[procI];
|
|
curPatchEdgeLabels =
|
|
labelListList
|
|
(
|
|
curPatchSize.size()
|
|
+ curProcessorPatchSize.size()
|
|
);
|
|
|
|
forAll(curPatchSize, patchI)
|
|
{
|
|
labelList& curEdgeLabels = curPatchEdgeLabels[patchI];
|
|
curEdgeLabels.setSize(curPatchSize[patchI], -1);
|
|
|
|
label edgeI = 0;
|
|
|
|
for
|
|
(
|
|
int i=curPatchStartIndex[patchI];
|
|
i<(curPatchStartIndex[patchI]+curPatchSize[patchI]);
|
|
i++
|
|
)
|
|
{
|
|
curEdgeLabels[edgeI] =
|
|
procMeshEdgesMap_[procI][curEdgeAddressing[i]];
|
|
edgeI++;
|
|
}
|
|
}
|
|
|
|
forAll(curProcessorPatchSize, patchI)
|
|
{
|
|
labelList& curEdgeLabels =
|
|
curPatchEdgeLabels[curPatchSize.size() + patchI];
|
|
curEdgeLabels.setSize(curProcessorPatchSize[patchI], -1);
|
|
|
|
label edgeI = 0;
|
|
|
|
for
|
|
(
|
|
int i=curProcessorPatchStartIndex[patchI];
|
|
i<(curProcessorPatchStartIndex[patchI]
|
|
+curProcessorPatchSize[patchI]);
|
|
i++
|
|
)
|
|
{
|
|
curEdgeLabels[edgeI] =
|
|
procMeshEdgesMap_[procI][curEdgeAddressing[i]];
|
|
edgeI++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
bool faMeshDecomposition::writeDecomposition()
|
|
{
|
|
Info<< "\nConstructing processor FA meshes" << endl;
|
|
|
|
|
|
// Make a lookup map for globally shared points
|
|
Map<label> sharedPointLookup(2*globallySharedPoints_.size());
|
|
|
|
forAll (globallySharedPoints_, pointi)
|
|
{
|
|
sharedPointLookup.insert(globallySharedPoints_[pointi], pointi);
|
|
}
|
|
|
|
label totProcEdges = 0;
|
|
label maxProcPatches = 0;
|
|
label maxProcEdges = 0;
|
|
|
|
// Write out the meshes
|
|
for (label procI = 0; procI < nProcs(); procI++)
|
|
{
|
|
// Create processor mesh without a boundary
|
|
|
|
fileName processorCasePath
|
|
(
|
|
time().caseName()/fileName(word("processor") + Foam::name(procI))
|
|
);
|
|
|
|
// create a database
|
|
Time processorDb
|
|
(
|
|
Time::controlDictName,
|
|
time().rootPath(),
|
|
processorCasePath
|
|
);
|
|
|
|
// read finite volume mesh
|
|
fvMesh procFvMesh
|
|
(
|
|
IOobject
|
|
(
|
|
fvMesh::defaultRegion,
|
|
processorDb.timeName(),
|
|
processorDb
|
|
)
|
|
);
|
|
|
|
labelIOList fvBoundaryProcAddressing
|
|
(
|
|
IOobject
|
|
(
|
|
"boundaryProcAddressing",
|
|
"constant",
|
|
procFvMesh.meshSubDir,
|
|
procFvMesh,
|
|
IOobject::MUST_READ,
|
|
IOobject::NO_WRITE
|
|
)
|
|
);
|
|
|
|
|
|
// create finite area mesh
|
|
faMesh procMesh
|
|
(
|
|
procFvMesh,
|
|
procFaceLabels_[procI]
|
|
);
|
|
|
|
// Create processor boundary patches
|
|
const labelList& curBoundaryAddressing =
|
|
procBoundaryAddressing_[procI];
|
|
|
|
const labelList& curPatchSizes = procPatchSize_[procI];
|
|
|
|
const labelList& curNeighbourProcessors =
|
|
procNeighbourProcessors_[procI];
|
|
|
|
const labelList& curProcessorPatchSizes =
|
|
procProcessorPatchSize_[procI];
|
|
|
|
const labelListList& curPatchEdgeLabels =
|
|
procPatchEdgeLabels_[procI];
|
|
|
|
const faPatchList& meshPatches = boundary();
|
|
|
|
List<faPatch*> procPatches
|
|
(
|
|
curPatchSizes.size()
|
|
+ curProcessorPatchSizes.size(),
|
|
reinterpret_cast<faPatch*>(NULL)
|
|
);
|
|
|
|
label nPatches = 0;
|
|
|
|
forAll (curPatchSizes, patchi)
|
|
{
|
|
const labelList& curEdgeLabels = curPatchEdgeLabels[nPatches];
|
|
|
|
label ngbPolyPatchIndex =
|
|
findIndex
|
|
(
|
|
fvBoundaryProcAddressing,
|
|
meshPatches[curBoundaryAddressing[patchi]]
|
|
.ngbPolyPatchIndex()
|
|
);
|
|
|
|
procPatches[nPatches] =
|
|
meshPatches[curBoundaryAddressing[patchi]].clone
|
|
(
|
|
procMesh.boundary(),
|
|
curEdgeLabels,
|
|
nPatches,
|
|
ngbPolyPatchIndex
|
|
).ptr();
|
|
|
|
nPatches++;
|
|
}
|
|
|
|
forAll (curProcessorPatchSizes, procPatchI)
|
|
{
|
|
const labelList& curEdgeLabels = curPatchEdgeLabels[nPatches];
|
|
|
|
procPatches[nPatches] =
|
|
new processorFaPatch
|
|
(
|
|
word("procBoundary") + Foam::name(procI)
|
|
+ word("to")
|
|
+ Foam::name(curNeighbourProcessors[procPatchI]),
|
|
curEdgeLabels,
|
|
nPatches,
|
|
procMesh.boundary(),
|
|
-1,
|
|
procI,
|
|
curNeighbourProcessors[procPatchI]
|
|
);
|
|
|
|
nPatches++;
|
|
}
|
|
|
|
// Add boundary patches
|
|
procMesh.addFaPatches(procPatches);
|
|
|
|
// Set the precision of the points data to 10
|
|
IOstream::defaultPrecision(10);
|
|
|
|
procMesh.write();
|
|
|
|
Info<< endl
|
|
<< "Processor " << procI << nl
|
|
<< " Number of faces = " << procMesh.nFaces()
|
|
<< endl;
|
|
|
|
label nBoundaryEdges = 0;
|
|
label nProcPatches = 0;
|
|
label nProcEdges = 0;
|
|
|
|
forAll (procMesh.boundary(), patchi)
|
|
{
|
|
if
|
|
(
|
|
procMesh.boundary()[patchi].type()
|
|
== processorFaPatch::typeName
|
|
)
|
|
{
|
|
const processorFaPatch& ppp =
|
|
refCast<const processorFaPatch>
|
|
(
|
|
procMesh.boundary()[patchi]
|
|
);
|
|
|
|
Info<< " Number of edges shared with processor "
|
|
<< ppp.neighbProcNo() << " = " << ppp.size() << endl;
|
|
|
|
nProcPatches++;
|
|
nProcEdges += ppp.size();
|
|
}
|
|
else
|
|
{
|
|
nBoundaryEdges += procMesh.boundary()[patchi].size();
|
|
}
|
|
}
|
|
|
|
Info<< " Number of processor patches = " << nProcPatches << nl
|
|
<< " Number of processor edges = " << nProcEdges << nl
|
|
<< " Number of boundary edges = " << nBoundaryEdges << endl;
|
|
|
|
totProcEdges += nProcEdges;
|
|
maxProcPatches = max(maxProcPatches, nProcPatches);
|
|
maxProcEdges = max(maxProcEdges, nProcEdges);
|
|
|
|
// create and write the addressing information
|
|
labelIOList pointProcAddressing
|
|
(
|
|
IOobject
|
|
(
|
|
"pointProcAddressing",
|
|
"constant",
|
|
procMesh.meshSubDir,
|
|
procFvMesh,
|
|
IOobject::NO_READ,
|
|
IOobject::NO_WRITE
|
|
),
|
|
procPatchPointAddressing_[procI]
|
|
);
|
|
pointProcAddressing.write();
|
|
|
|
labelIOList edgeProcAddressing
|
|
(
|
|
IOobject
|
|
(
|
|
"edgeProcAddressing",
|
|
"constant",
|
|
procMesh.meshSubDir,
|
|
procFvMesh,
|
|
IOobject::NO_READ,
|
|
IOobject::NO_WRITE
|
|
),
|
|
procEdgeAddressing_[procI]
|
|
);
|
|
edgeProcAddressing.write();
|
|
|
|
labelIOList faceProcAddressing
|
|
(
|
|
IOobject
|
|
(
|
|
"faceProcAddressing",
|
|
"constant",
|
|
procMesh.meshSubDir,
|
|
procFvMesh,
|
|
IOobject::NO_READ,
|
|
IOobject::NO_WRITE
|
|
),
|
|
procFaceAddressing_[procI]
|
|
);
|
|
faceProcAddressing.write();
|
|
|
|
labelIOList boundaryProcAddressing
|
|
(
|
|
IOobject
|
|
(
|
|
"boundaryProcAddressing",
|
|
"constant",
|
|
procMesh.meshSubDir,
|
|
procFvMesh,
|
|
IOobject::NO_READ,
|
|
IOobject::NO_WRITE
|
|
),
|
|
procBoundaryAddressing_[procI]
|
|
);
|
|
boundaryProcAddressing.write();
|
|
}
|
|
|
|
Info<< nl
|
|
<< "Number of processor edges = " << totProcEdges/2 << nl
|
|
<< "Max number of processor patches = " << maxProcPatches << nl
|
|
<< "Max number of faces between processors = " << maxProcEdges
|
|
<< endl;
|
|
|
|
return true;
|
|
}
|