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ENH: Allow a weightField volScalarField to be specified in decomposeParDict.

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Weights the cells in the decomposition.
This commit is contained in:
graham
2010-12-03 22:15:47 +00:00
parent d775a901c5
commit 40315b21c0
4 changed files with 82 additions and 16 deletions
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9
applications/utilities/parallelProcessing/decomposePar/decomposeParDict
View File

@ -19,15 +19,17 @@ FoamFile
numberOfSubdomains 8;
//- Keep owner and neighbour on same processor for faces in zones:
// preserveFaceZones (heater solid1 solid3);
//- Keep owner and neighbour on same processor for faces in patches:
// (makes sense only for cyclic patches)
//preservePatches (cyclic_half0 cyclic_half1);
//- Use the volScalarField named here as a weight for each cell in the
// decomposition. For example, use a particle population field to decompose
// for a balanced number of particles in a lagrangian simulation.
// weightField dsmcRhoNMean;
method scotch;
// method hierarchical;
@ -59,11 +61,8 @@ multiLevelCoeffs
}
}
// Desired output
simpleCoeffs
{
n (2 1 1);

1
applications/utilities/parallelProcessing/decomposePar/domainDecomposition.C
View File

@ -24,7 +24,6 @@ License
\*---------------------------------------------------------------------------*/
#include "domainDecomposition.H"
#include "Time.H"
#include "dictionary.H"
#include "labelIOList.H"
#include "processorPolyPatch.H"

3
applications/utilities/parallelProcessing/decomposePar/domainDecomposition.H
View File

@ -41,6 +41,9 @@ SourceFiles
#include "SLList.H"
#include "PtrList.H"
#include "point.H"
#include "Time.H"
#include "volFields.H"
namespace Foam
{

65
applications/utilities/parallelProcessing/decomposePar/domainDecompositionDistribute.C
View File

@ -113,9 +113,37 @@ void Foam::domainDecomposition::distributeCells()
);
if (sameProcFaces.empty())
{
if (decompositionDict_.found("weightField"))
{
word weightName = decompositionDict_.lookup("weightField");
volScalarField weights
(
IOobject
(
weightName,
time().timeName(),
*this,
IOobject::MUST_READ,
IOobject::NO_WRITE
),
*this
);
cellToProc_ = decomposePtr().decompose
(
*this,
cellCentres(),
weights.internalField()
);
}
else
{
cellToProc_ = decomposePtr().decompose(*this, cellCentres());
}
}
else
{
Info<< "Selected " << sameProcFaces.size()
@ -173,6 +201,42 @@ void Foam::domainDecomposition::distributeCells()
// Do decomposition on agglomeration
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
if (decompositionDict_.found("weightField"))
{
scalarField regionWeights(globalRegion.nRegions(), 0);
word weightName = decompositionDict_.lookup("weightField");
volScalarField weights
(
IOobject
(
weightName,
time().timeName(),
*this,
IOobject::MUST_READ,
IOobject::NO_WRITE
),
*this
);
forAll(globalRegion, cellI)
{
label regionI = globalRegion[cellI];
regionWeights[regionI] += weights.internalField()[cellI];
}
cellToProc_ = decomposePtr().decompose
(
*this,
globalRegion,
regionCentres,
regionWeights
);
}
else
{
cellToProc_ = decomposePtr().decompose
(
*this,
@ -180,6 +244,7 @@ void Foam::domainDecomposition::distributeCells()
regionCentres
);
}
}
Info<< "\nFinished decomposition in "
<< decompositionTime.elapsedCpuTime()