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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2026 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 "GAMGSolver.H"
#include "GAMGInterfaceField.H"
#include "processorLduInterfaceField.H"
#include "processorGAMGInterfaceField.H"
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
void Foam::GAMGSolver::agglomerateMatrix
(
const label fineLevelIndex,
const lduMesh& coarseMesh,
const lduInterfacePtrsList& coarseMeshInterfaces
)
{
// Get fine matrix
const lduMatrix& fineMatrix = matrixLevel(fineLevelIndex);
if (UPstream::myProcNo(fineMatrix.mesh().comm()) != -1)
{
const label nCoarseFaces = agglomeration_.nFaces(fineLevelIndex);
const label nCoarseCells = agglomeration_.nCells(fineLevelIndex);
// Set the coarse level matrix
matrixLevels_.set
(
fineLevelIndex,
new lduMatrix(coarseMesh)
);
lduMatrix& coarseMatrix = matrixLevels_[fineLevelIndex];
// Coarse matrix diagonal initialised by restricting the finer mesh
// diagonal. Note that we size with the cached coarse nCells and not
// the actual coarseMesh size since this might be dummy when processor
// agglomerating.
scalarField& coarseDiag = coarseMatrix.diag(nCoarseCells);
agglomeration_.restrictField
(
coarseDiag,
fineMatrix.diag(),
fineLevelIndex,
false // no processor agglomeration
);
// Get reference to fine-level interfaces
const lduInterfaceFieldPtrsList& fineInterfaces =
interfaceLevel(fineLevelIndex);
// Create coarse-level interfaces
primitiveInterfaceLevels_.set
(
fineLevelIndex,
new PtrList<lduInterfaceField>(fineInterfaces.size())
);
PtrList<lduInterfaceField>& coarsePrimInterfaces =
primitiveInterfaceLevels_[fineLevelIndex];
interfaceLevels_.set
(
fineLevelIndex,
new lduInterfaceFieldPtrsList(fineInterfaces.size())
);
lduInterfaceFieldPtrsList& coarseInterfaces =
interfaceLevels_[fineLevelIndex];
// Set coarse-level boundary coefficients
interfaceLevelsBouCoeffs_.set
(
fineLevelIndex,
new Field<Field<scalar>>(fineInterfaces.size())
);
Field<Field<scalar>>& coarseInterfaceBouCoeffs =
interfaceLevelsBouCoeffs_[fineLevelIndex];
// Set coarse-level internal coefficients
interfaceLevelsIntCoeffs_.set
(
fineLevelIndex,
new Field<Field<scalar>>(fineInterfaces.size())
);
Field<Field<scalar>>& coarseInterfaceIntCoeffs =
interfaceLevelsIntCoeffs_[fineLevelIndex];
// Add the coarse level
agglomerateInterfaceCoefficients
(
fineLevelIndex,
coarseMeshInterfaces,
coarsePrimInterfaces,
coarseInterfaces,
coarseInterfaceBouCoeffs,
coarseInterfaceIntCoeffs
);
// Get face restriction map for current level
const labelList& faceRestrictAddr =
agglomeration_.faceRestrictAddressing(fineLevelIndex);
const boolList& faceFlipMap =
agglomeration_.faceFlipMap(fineLevelIndex);
// Check if matrix is asymmetric and if so agglomerate both upper
// and lower coefficients ...
if (fineMatrix.hasLower())
{
// Get off-diagonal matrix coefficients
const scalarField& fineUpper = fineMatrix.upper();
const scalarField& fineLower = fineMatrix.lower();
// Coarse matrix upper coefficients. Note passed in size
scalarField& coarseUpper = coarseMatrix.upper(nCoarseFaces);
scalarField& coarseLower = coarseMatrix.lower(nCoarseFaces);
forAll(faceRestrictAddr, fineFacei)
{
label cFace = faceRestrictAddr[fineFacei];
if (cFace >= 0)
{
// Check the orientation of the fine-face relative to the
// coarse face it is being agglomerated into
if (!faceFlipMap[fineFacei])
{
coarseUpper[cFace] += fineUpper[fineFacei];
coarseLower[cFace] += fineLower[fineFacei];
}
else
{
coarseUpper[cFace] += fineLower[fineFacei];
coarseLower[cFace] += fineUpper[fineFacei];
}
}
else
{
// Add the fine face coefficients into the diagonal.
coarseDiag[-1 - cFace] +=
fineUpper[fineFacei] + fineLower[fineFacei];
}
}
}
else // ... Otherwise it is symmetric so agglomerate just the upper
{
// Get off-diagonal matrix coefficients
const scalarField& fineUpper = fineMatrix.upper();
// Coarse matrix upper coefficients
scalarField& coarseUpper = coarseMatrix.upper(nCoarseFaces);
forAll(faceRestrictAddr, fineFacei)
{
label cFace = faceRestrictAddr[fineFacei];
if (cFace >= 0)
{
coarseUpper[cFace] += fineUpper[fineFacei];
}
else
{
// Add the fine face coefficient into the diagonal.
coarseDiag[-1 - cFace] += 2*fineUpper[fineFacei];
}
}
}
}
}
void Foam::GAMGSolver::agglomerateInterfaceCoefficients
(
const label fineLevelIndex,
const lduInterfacePtrsList& coarseMeshInterfaces,
PtrList<lduInterfaceField>& coarsePrimInterfaces,
lduInterfaceFieldPtrsList& coarseInterfaces,
Field<Field<scalar>>& coarseInterfaceBouCoeffs,
Field<Field<scalar>>& coarseInterfaceIntCoeffs
) const
{
// Get reference to fine-level interfaces
const lduInterfaceFieldPtrsList& fineInterfaces =
interfaceLevel(fineLevelIndex);
// Get reference to fine-level boundary coefficients
const Field<Field<scalar>>& fineInterfaceBouCoeffs =
interfaceBouCoeffsLevel(fineLevelIndex);
// Get reference to fine-level internal coefficients
const Field<Field<scalar>>& fineInterfaceIntCoeffs =
interfaceIntCoeffsLevel(fineLevelIndex);
const labelListList& patchFineToCoarse =
agglomeration_.patchFaceRestrictAddressing(fineLevelIndex);
const labelList& nPatchFaces =
agglomeration_.nPatchFaces(fineLevelIndex);
// Add the coarse level
forAll(fineInterfaces, inti)
{
if (fineInterfaces.set(inti))
{
const GAMGInterface& coarseInterface =
refCast<const GAMGInterface>
(
coarseMeshInterfaces[inti]
);
coarsePrimInterfaces.set
(
inti,
GAMGInterfaceField::New
(
coarseInterface,
fineInterfaces[inti]
).ptr()
);
coarseInterfaces.set
(
inti,
&coarsePrimInterfaces[inti]
);
const labelList& faceRestrictAddressing = patchFineToCoarse[inti];
coarseInterfaceBouCoeffs[inti].setSize(nPatchFaces[inti], 0.0);
agglomeration_.restrictField
(
coarseInterfaceBouCoeffs[inti],
fineInterfaceBouCoeffs[inti],
faceRestrictAddressing
);
coarseInterfaceIntCoeffs[inti].setSize(nPatchFaces[inti], 0.0);
agglomeration_.restrictField
(
coarseInterfaceIntCoeffs[inti],
fineInterfaceIntCoeffs[inti],
faceRestrictAddressing
);
}
}
}
void Foam::GAMGSolver::gatherMatrices
(
const labelList& procIDs,
const lduMesh& dummyMesh,
const label meshComm,
const lduMatrix& mat,
const Field<Field<scalar>>& interfaceBouCoeffs,
const Field<Field<scalar>>& interfaceIntCoeffs,
const lduInterfaceFieldPtrsList& interfaces,
PtrList<lduMatrix>& otherMats,
PtrList<Field<Field<scalar>>>& otherBouCoeffs,
PtrList<Field<Field<scalar>>>& otherIntCoeffs,
List<boolList>& otherTransforms,
List<List<label>>& otherRanks
) const
{
if (debug)
{
Pout<< "GAMGSolver::gatherMatrices :"
<< " collecting matrices from procs:" << procIDs
<< " using comm:" << meshComm << endl;
}
if (Pstream::myProcNo(meshComm) == procIDs[0])
{
// Master.
otherMats.setSize(procIDs.size()-1);
otherBouCoeffs.setSize(procIDs.size()-1);
otherIntCoeffs.setSize(procIDs.size()-1);
otherTransforms.setSize(procIDs.size()-1);
otherRanks.setSize(procIDs.size()-1);
for (label proci = 1; proci < procIDs.size(); proci++)
{
label otherI = proci-1;
IPstream fromSlave
(
Pstream::commsTypes::scheduled,
procIDs[proci],
0, // bufSize
Pstream::msgType(),
meshComm
);
otherMats.set(otherI, new lduMatrix(dummyMesh, fromSlave));
// Receive number of/valid interfaces
List<label>& procRanks = otherRanks[otherI];
fromSlave >> procRanks;
// Size coefficients
otherBouCoeffs.set
(
otherI,
new Field<Field<scalar>>(procRanks.size())
);
otherIntCoeffs.set
(
otherI,
new Field<Field<scalar>>(procRanks.size())
);
forAll(procRanks, intI)
{
if (procRanks[intI] != -1)
{
otherBouCoeffs[otherI][intI] = scalarField(fromSlave);
otherIntCoeffs[otherI][intI] = scalarField(fromSlave);
}
}
}
}
else
{
// Send to master
// Count valid interfaces
List<label> procRanks(interfaceBouCoeffs.size(), -1);
forAll(interfaces, intI)
{
if (interfaces.set(intI))
{
const processorLduInterfaceField& interface =
refCast<const processorLduInterfaceField>
(
interfaces[intI]
);
procRanks[intI] = interface.rank();
}
}
OPstream toMaster
(
Pstream::commsTypes::scheduled,
procIDs[0],
0,
Pstream::msgType(),
meshComm
);
toMaster << mat << procRanks;
forAll(procRanks, intI)
{
if (procRanks[intI] != -1)
{
toMaster
<< interfaceBouCoeffs[intI]
<< interfaceIntCoeffs[intI];
}
}
}
}
void Foam::GAMGSolver::procAgglomerateMatrix
(
// Agglomeration information
const labelList& procAgglomMap,
const List<label>& agglomProcIDs,
const label levelI,
// Resulting matrix
autoPtr<lduMatrix>& allMatrixPtr,
Field<Field<scalar>>& allInterfaceBouCoeffs,
Field<Field<scalar>>& allInterfaceIntCoeffs,
PtrList<lduInterfaceField>& allPrimitiveInterfaces,
lduInterfaceFieldPtrsList& allInterfaces
) const
{
const lduMatrix& coarsestMatrix = matrixLevels_[levelI];
const lduInterfaceFieldPtrsList& coarsestInterfaces =
interfaceLevels_[levelI];
const Field<Field<scalar>>& coarsestBouCoeffs =
interfaceLevelsBouCoeffs_[levelI];
const Field<Field<scalar>>& coarsestIntCoeffs =
interfaceLevelsIntCoeffs_[levelI];
const lduMesh& coarsestMesh = coarsestMatrix.mesh();
label coarseComm = coarsestMesh.comm();
// Gather all matrix coefficients onto agglomProcIDs[0]
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PtrList<lduMatrix> otherMats;
PtrList<Field<Field<scalar>>> otherBouCoeffs;
PtrList<Field<Field<scalar>>> otherIntCoeffs;
List<boolList> otherTransforms;
List<List<label>> otherRanks;
gatherMatrices
(
agglomProcIDs,
coarsestMesh,
coarseComm,
coarsestMatrix,
coarsestBouCoeffs,
coarsestIntCoeffs,
coarsestInterfaces,
otherMats,
otherBouCoeffs,
otherIntCoeffs,
otherTransforms,
otherRanks
);
if (Pstream::myProcNo(coarseComm) == agglomProcIDs[0])
{
// Agglomerate all matrix
// ~~~~~~~~~~~~~~~~~~~~~~
// Pout<< "Own matrix:" << coarsestMatrix.info() << endl;
//
// forAll(otherMats, i)
//{
// Pout<< "** otherMats " << i << " "
// << otherMats[i].info()
// << endl;
//}
// Pout<< endl;
const lduMesh& allMesh = agglomeration_.meshLevel(levelI+1);
const labelList& cellOffsets = agglomeration_.cellOffsets(levelI+1);
const labelListList& faceMap = agglomeration_.faceMap(levelI+1);
const labelListList& boundaryMap = agglomeration_.boundaryMap(levelI+1);
const labelListListList& boundaryFaceMap =
agglomeration_.boundaryFaceMap(levelI+1);
allMatrixPtr.reset(new lduMatrix(allMesh));
lduMatrix& allMatrix = allMatrixPtr();
if (coarsestMatrix.hasDiag())
{
scalarField& allDiag = allMatrix.diag();
SubList<scalar>
(
allDiag,
coarsestMatrix.diag().size()
) = coarsestMatrix.diag();
forAll(otherMats, i)
{
SubList<scalar>
(
allDiag,
otherMats[i].diag().size(),
cellOffsets[i+1]
) = otherMats[i].diag();
}
}
if (coarsestMatrix.hasLower())
{
scalarField& allLower = allMatrix.lower();
UIndirectList<scalar>
(
allLower,
faceMap[0]
) = coarsestMatrix.lower();
forAll(otherMats, i)
{
UIndirectList<scalar>
(
allLower,
faceMap[i+1]
) = otherMats[i].lower();
}
}
if (coarsestMatrix.hasUpper())
{
scalarField& allUpper = allMatrix.upper();
UIndirectList<scalar>
(
allUpper,
faceMap[0]
) = coarsestMatrix.upper();
forAll(otherMats, i)
{
UIndirectList<scalar>
(
allUpper,
faceMap[i+1]
) = otherMats[i].upper();
}
}
// Agglomerate interface fields and coefficients
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lduInterfacePtrsList allMeshInterfaces = allMesh.interfaces();
allInterfaceBouCoeffs.setSize(allMeshInterfaces.size());
allInterfaceIntCoeffs.setSize(allMeshInterfaces.size());
allPrimitiveInterfaces.setSize(allMeshInterfaces.size());
allInterfaces.setSize(allMeshInterfaces.size());
forAll(allMeshInterfaces, intI)
{
const lduInterface& patch = allMeshInterfaces[intI];
label size = patch.faceCells().size();
allInterfaceBouCoeffs[intI].setSize(size);
allInterfaceIntCoeffs[intI].setSize(size);
}
labelList nBounFaces(allMeshInterfaces.size());
forAll(boundaryMap, proci)
{
const Field<Field<scalar>>& procBouCoeffs
(
(proci == 0)
? coarsestBouCoeffs
: otherBouCoeffs[proci-1]
);
const Field<Field<scalar>>& procIntCoeffs
(
(proci == 0)
? coarsestIntCoeffs
: otherIntCoeffs[proci-1]
);
const labelList& bMap = boundaryMap[proci];
forAll(bMap, procIntI)
{
label allIntI = bMap[procIntI];
if (allIntI != -1)
{
// So this boundary has been preserved. Copy
// data across.
if (!allInterfaces.set(allIntI))
{
// Construct lduInterfaceField
int rank = -1;
if (proci == 0)
{
const processorGAMGInterfaceField& procInt =
refCast
<
const processorGAMGInterfaceField
>
(
coarsestInterfaces[procIntI]
);
rank = procInt.rank();
}
else
{
rank = otherRanks[proci-1][procIntI];
}
allPrimitiveInterfaces.set
(
allIntI,
GAMGInterfaceField::New
(
refCast<const GAMGInterface>
(
allMeshInterfaces[allIntI]
),
rank
).ptr()
);
allInterfaces.set
(
allIntI,
&allPrimitiveInterfaces[allIntI]
);
}
// Map data from processor to complete mesh
scalarField& allBou = allInterfaceBouCoeffs[allIntI];
scalarField& allInt = allInterfaceIntCoeffs[allIntI];
const labelList& map = boundaryFaceMap[proci][procIntI];
const scalarField& procBou = procBouCoeffs[procIntI];
const scalarField& procInt = procIntCoeffs[procIntI];
forAll(map, i)
{
label allFacei = map[i];
if (allFacei < 0)
{
FatalErrorInFunction
<< "problem." << abort(FatalError);
}
allBou[allFacei] = procBou[i];
allInt[allFacei] = procInt[i];
}
}
else if (procBouCoeffs[procIntI].size())
{
// Boundary has become internal face
const labelList& map = boundaryFaceMap[proci][procIntI];
const scalarField& procBou = procBouCoeffs[procIntI];
const scalarField& procInt = procIntCoeffs[procIntI];
forAll(map, i)
{
if (map[i] >= 0)
{
label allFacei = map[i];
if (coarsestMatrix.hasUpper())
{
allMatrix.upper()[allFacei] = -procBou[i];
}
if (coarsestMatrix.hasLower())
{
allMatrix.lower()[allFacei] = -procInt[i];
}
}
else
{
label allFacei = -map[i]-1;
if (coarsestMatrix.hasUpper())
{
allMatrix.upper()[allFacei] = -procInt[i];
}
if (coarsestMatrix.hasLower())
{
allMatrix.lower()[allFacei] = -procBou[i];
}
}
}
}
}
}
// Pout<< "** Assembled allMatrix:" << allMatrix.info() << endl;
//
// forAll(allInterfaces, intI)
//{
// if (allInterfaces.set(intI))
// {
// Pout<< " patch:" << intI
// << " type:" << allInterfaces[intI].type()
// << " size:"
// << allInterfaces[intI].interface().
// faceCells().size()
// << endl;
//
// // const scalarField& bouCoeffs = allInterfaceBouCoeffs[intI];
// // const scalarField& intCoeffs = allInterfaceIntCoeffs[intI];
// // forAll(bouCoeffs, facei)
// //{
// // Pout<< " " << facei
// // << "\tbou:" << bouCoeffs[facei]
// // << "\tint:" << intCoeffs[facei]
// // << endl;
// //}
// }
//}
}
}
void Foam::GAMGSolver::procAgglomerateMatrix
(
const labelList& procAgglomMap,
const List<label>& agglomProcIDs,
const label levelI
)
{
autoPtr<lduMatrix> allMatrixPtr;
autoPtr<Field<Field<scalar>>> allInterfaceBouCoeffs
(
new Field<Field<scalar>>(0)
);
autoPtr<Field<Field<scalar>>> allInterfaceIntCoeffs
(
new Field<Field<scalar>>(0)
);
autoPtr<PtrList<lduInterfaceField>> allPrimitiveInterfaces
(
new PtrList<lduInterfaceField>(0)
);
autoPtr<lduInterfaceFieldPtrsList> allInterfaces
(
new lduInterfaceFieldPtrsList(0)
);
procAgglomerateMatrix
(
// Agglomeration information
procAgglomMap,
agglomProcIDs,
levelI,
// Resulting matrix
allMatrixPtr,
allInterfaceBouCoeffs(),
allInterfaceIntCoeffs(),
allPrimitiveInterfaces(),
allInterfaces()
);
matrixLevels_.set(levelI, allMatrixPtr);
interfaceLevelsBouCoeffs_.set(levelI, allInterfaceBouCoeffs);
interfaceLevelsIntCoeffs_.set(levelI, allInterfaceIntCoeffs);
primitiveInterfaceLevels_.set(levelI, allPrimitiveInterfaces);
interfaceLevels_.set(levelI, allInterfaces);
}
// ************************************************************************* //
|