Abstract base class for decomposition. More...

Inheritance diagram for decompositionMethod:

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Collaboration diagram for decompositionMethod:

Public Member Functions
	TypeName ("decompositionMethod")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, decompositionMethod, dictionary,(const dictionary &decompositionDict),(decompositionDict))

	decompositionMethod (const dictionary &decompositionDict)
	Construct given the decomposition dictionary. More...

virtual	~decompositionMethod ()
	Destructor. More...

label	nDomains () const

virtual bool	parallelAware () const =0
	Is method parallel aware (i.e. does it synchronize domains across. More...

virtual labelList	decompose (const pointField &points, const scalarField &pointWeights)
	Return for every coordinate the wanted processor number. More...

virtual labelList	decompose (const pointField &)
	Like decompose but with uniform weights on the points. More...

virtual labelList	decompose (const polyMesh &mesh, const pointField &points, const scalarField &pointWeights)=0
	Return for every coordinate the wanted processor number. Use the. More...

virtual labelList	decompose (const polyMesh &, const pointField &)
	Like decompose but with uniform weights on the points. More...

virtual labelList	decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField &regionPoints, const scalarField &regionWeights)
	Return for every coordinate the wanted processor number. Gets. More...

virtual labelList	decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField &regionPoints)
	Like decompose but with uniform weights on the regions. More...

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cc, const scalarField &cWeights)=0
	Return for every coordinate the wanted processor number. More...

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cc)
	Like decompose but with uniform weights on the cells. More...

void	setConstraints (const polyMesh &mesh, boolList &blockedFace, PtrList< labelList > &specifiedProcessorFaces, labelList &specifiedProcessor, List< labelPair > &explicitConnections)
	Helper: extract constraints: More...

void	applyConstraints (const polyMesh &mesh, const boolList &blockedFace, const PtrList< labelList > &specifiedProcessorFaces, const labelList &specifiedProcessor, const List< labelPair > &explicitConnections, labelList &finalDecomp)
	Helper: apply constraints to a decomposition. This gives. More...

virtual labelList	decompose (const polyMesh &mesh, const scalarField &cellWeights, const boolList &blockedFace, const PtrList< labelList > &specifiedProcessorFaces, const labelList &specifiedProcessor, const List< labelPair > &explicitConnections)

labelList	decompose (const polyMesh &mesh, const scalarField &cWeights)
	Decompose a mesh. Apply all constraints from decomposeParDict. More...

Static Public Member Functions
static autoPtr< decompositionMethod >	New (const dictionary &decompositionDict)
	Return a reference to the selected decomposition method. More...

static void	calcCellCells (const polyMesh &mesh, const labelList &agglom, const label nLocalCoarse, const bool global, CompactListList< label > &cellCells)
	Helper: determine (local or global) cellCells from mesh. More...

static void	calcCellCells (const polyMesh &mesh, const labelList &agglom, const label nLocalCoarse, const bool parallel, CompactListList< label > &cellCells, CompactListList< scalar > &cellCellWeights)
	Helper: determine (local or global) cellCells and face weights. More...

Protected Attributes
const dictionary &	decompositionDict_

label	nProcessors_

PtrList< decompositionConstraint >	constraints_
	Optional constraints. More...

Private Member Functions
	decompositionMethod (const decompositionMethod &)
	Disallow default bitwise copy construct and assignment. More...

void	operator= (const decompositionMethod &)

Detailed Description

Abstract base class for decomposition.

Source files

Definition at line 48 of file decompositionMethod.H.

Constructor & Destructor Documentation

◆ decompositionMethod() [1/2]

decompositionMethod ( const decompositionMethod & )

private

Disallow default bitwise copy construct and assignment.

◆ decompositionMethod() [2/2]

decompositionMethod ( const dictionary & decompositionDict )

Construct given the decomposition dictionary.

Definition at line 55 of file decompositionMethod.C.

References List::append(), dict, Foam::findIndex(), forAllConstIter(), Foam::compressible::New(), and dictionary::subDict().

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◆ ~decompositionMethod()

virtual ~decompositionMethod ( )

inlinevirtual

Destructor.

Definition at line 106 of file decompositionMethod.H.

Member Function Documentation

◆ operator=()

void operator= ( const decompositionMethod & )

private

◆ TypeName()

TypeName ( "decompositionMethod" )

Runtime type information.

◆ declareRunTimeSelectionTable()

declareRunTimeSelectionTable	(	autoPtr	,
		decompositionMethod	,
		dictionary	,
		(const dictionary &decompositionDict)	,
		(decompositionDict)
	)

◆ New()

Foam::autoPtr< Foam::decompositionMethod > New ( const dictionary & decompositionDict )

static

Return a reference to the selected decomposition method.

Definition at line 179 of file decompositionMethod.C.

References Foam::endl(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, Foam::Info, dictionary::lookup(), and Foam::nl.

Referenced by decompositionModel::decomposer(), distributedTriSurfaceMesh::independentlyDistributedBbs(), main(), multiLevelDecomp::multiLevelDecomp(), and structuredDecomp::structuredDecomp().

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◆ nDomains()

label nDomains ( ) const

inline

Definition at line 112 of file decompositionMethod.H.

References decompositionMethod::nProcessors_.

Referenced by determineDecomposition(), multiLevelDecomp::multiLevelDecomp(), and structuredDecomp::structuredDecomp().

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◆ parallelAware()

virtual bool parallelAware ( ) const

pure virtual

Is method parallel aware (i.e. does it synchronize domains across.

proc boundaries)

Implemented in hierarchGeomDecomp, multiLevelDecomp, ptscotchDecomp, scotchDecomp, simpleGeomDecomp, structuredDecomp, metisDecomp, manualDecomp, and noDecomp.

Referenced by determineDecomposition(), and main().

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◆ decompose() [1/10]

virtual labelList decompose	(	const pointField &	points,
		const scalarField &	pointWeights
	)

inlinevirtual

Return for every coordinate the wanted processor number.

Reimplemented in geomDecomp, hierarchGeomDecomp, and simpleGeomDecomp.

Definition at line 126 of file decompositionMethod.H.

References NotImplemented.

Referenced by meshRefinement::balance(), determineDecomposition(), and domainDecomposition::distributeCells().

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◆ decompose() [2/10]

virtual labelList decompose ( const pointField & )

inlinevirtual

Like decompose but with uniform weights on the points.

Reimplemented in geomDecomp, hierarchGeomDecomp, and simpleGeomDecomp.

Definition at line 136 of file decompositionMethod.H.

References NotImplemented.

◆ decompose() [3/10]

virtual labelList decompose	(	const polyMesh &	mesh,
		const pointField &	points,
		const scalarField &	pointWeights
	)

pure virtual

Return for every coordinate the wanted processor number. Use the.

mesh connectivity (if needed)

Implemented in ptscotchDecomp, multiLevelDecomp, scotchDecomp, metisDecomp, structuredDecomp, hierarchGeomDecomp, manualDecomp, noDecomp, and simpleGeomDecomp.

◆ decompose() [4/10]

Foam::labelList decompose	(	const polyMesh &	mesh,
		const pointField &	points
	)

virtual

Like decompose but with uniform weights on the points.

Reimplemented in hierarchGeomDecomp, and simpleGeomDecomp.

Definition at line 205 of file decompositionMethod.C.

References mesh, and points.

◆ decompose() [5/10]

Foam::labelList decompose	(	const polyMesh &	mesh,
		const labelList &	cellToRegion,
		const pointField &	regionPoints,
		const scalarField &	regionWeights
	)

virtual

Return for every coordinate the wanted processor number. Gets.

passed agglomeration map (from fine to coarse cells) and coarse cell location. Can be overridden by decomposers that provide this functionality natively. Coarse cells are local to the processor (if in parallel). If you want to have coarse cells spanning processors use the globalCellCells instead.

Reimplemented in ptscotchDecomp, scotchDecomp, and metisDecomp.

Definition at line 217 of file decompositionMethod.C.

References forAll, mesh, and List::size().

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◆ decompose() [6/10]

Foam::labelList decompose	(	const polyMesh &	mesh,
		const labelList &	cellToRegion,
		const pointField &	regionPoints
	)

virtual

Like decompose but with uniform weights on the regions.

Definition at line 258 of file decompositionMethod.C.

References mesh.

◆ decompose() [7/10]

virtual labelList decompose	(	const labelListList &	globalCellCells,
		const pointField &	cc,
		const scalarField &	cWeights
	)

pure virtual

Return for every coordinate the wanted processor number.

The connectivity is equal to mesh.cellCells() except for

in parallel the cell numbers are global cell numbers (starting from 0 at processor0 and then incrementing all through the processors)
the connections are across coupled patches

Implemented in hierarchGeomDecomp, ptscotchDecomp, scotchDecomp, metisDecomp, multiLevelDecomp, simpleGeomDecomp, manualDecomp, noDecomp, and structuredDecomp.

◆ decompose() [8/10]

Foam::labelList decompose	(	const labelListList &	globalCellCells,
		const pointField &	cc
	)

virtual

Like decompose but with uniform weights on the cells.

Reimplemented in hierarchGeomDecomp.

Definition at line 277 of file decompositionMethod.C.

◆ calcCellCells() [1/2]

void calcCellCells	(	const polyMesh &	mesh,
		const labelList &	agglom,
		const label	nLocalCoarse,
		const bool	global,
		CompactListList< label > &	cellCells
	)

static

Helper: determine (local or global) cellCells from mesh.

agglomeration. Agglomeration is local to the processor. local : connections are in local indices. Coupled across cyclics but not processor patches. global : connections are in global indices. Coupled across cyclics and processor patches.

Definition at line 289 of file decompositionMethod.C.

References HashTable::clear(), polyPatch::coupled(), forAll, HashSet< Key, Hash >::insert(), globalIndex::isLocal(), CompactListList::m(), mesh, CompactListList::offsets(), patches, CompactListList::setSize(), List::setSize(), CompactListList::size(), polyPatch::start(), globalIndex::toGlobal(), and globalIndex::toLocal().

Referenced by CuthillMcKeeRenumber::renumber(), and springRenumber::renumber().

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◆ calcCellCells() [2/2]

void calcCellCells	(	const polyMesh &	mesh,
		const labelList &	agglom,
		const label	nLocalCoarse,
		const bool	parallel,
		CompactListList< label > &	cellCells,
		CompactListList< scalar > &	cellCellWeights
	)

static

Helper: determine (local or global) cellCells and face weights.

from mesh agglomeration. Uses mag of faceArea as weights

Definition at line 494 of file decompositionMethod.C.

References HashTable::clear(), polyPatch::coupled(), forAll, HashSet< Key, Hash >::insert(), globalIndex::isLocal(), CompactListList::m(), Foam::mag(), mesh, CompactListList::offsets(), patches, CompactListList::setSize(), List::setSize(), CompactListList::size(), polyPatch::start(), globalIndex::toGlobal(), globalIndex::toLocal(), and w().

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◆ setConstraints()

void setConstraints	(	const polyMesh &	mesh,
		boolList &	blockedFace,
		PtrList< labelList > &	specifiedProcessorFaces,
		labelList &	specifiedProcessor,
		List< labelPair > &	explicitConnections
	)

Helper: extract constraints:

blockedface: existing faces where owner and neighbour on same proc explicitConnections: sets of boundary faces ,, ,, specifiedProcessorFaces: groups of faces with all cells on same processor.

Definition at line 1421 of file decompositionMethod.C.

References List::clear(), PtrList::clear(), forAll, mesh, and List::setSize().

Referenced by meshRefinement::balance().

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◆ applyConstraints()

void applyConstraints	(	const polyMesh &	mesh,
		const boolList &	blockedFace,
		const PtrList< labelList > &	specifiedProcessorFaces,
		const labelList &	specifiedProcessor,
		const List< labelPair > &	explicitConnections,
		labelList &	finalDecomp
	)

Helper: apply constraints to a decomposition. This gives.

constraints opportunity to modify decomposition in case the native decomposition method has not obeyed all constraints

Definition at line 1450 of file decompositionMethod.C.

References forAll, and mesh.

◆ decompose() [9/10]

Foam::labelList decompose	(	const polyMesh &	mesh,
		const scalarField &	cellWeights,
		const boolList &	blockedFace,
		const PtrList< labelList > &	specifiedProcessorFaces,
		const labelList &	specifiedProcessor,
		const List< labelPair > &	explicitConnections
	)

virtual

Parameters

blockedFace	Whether owner and neighbour should be on same processor (takes priority over explicitConnections)
specifiedProcessorFaces	Whether whole sets of faces (and point neighbours) need to be kept on single processor
explicitConnections	Additional connections between boundary faces

Definition at line 1073 of file decompositionMethod.C.

References polyPatch::coupled(), FaceCellWave< Type, TrackingData >::data(), Foam::endl(), Foam::exit(), f(), f1, Foam::FatalError, FatalErrorInFunction, Pair::first(), forAll, Foam::Info, Foam::max(), mesh, patchIdentifier::name(), regionSplit::nLocalRegions(), patches, pFaces, Foam::reduce(), Foam::returnReduce(), Pair::second(), List::size(), PtrList::size(), and polyPatch::start().

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◆ decompose() [10/10]

Foam::labelList decompose	(	const polyMesh &	mesh,
		const scalarField &	cWeights
	)

Decompose a mesh. Apply all constraints from decomposeParDict.

('preserveFaceZones' etc). Calls either

no constraints, empty weights: decompose(mesh, cellCentres())
no constraints, set weights: decompose(mesh, cellCentres(), cellWeights)
valid constraints: decompose(mesh, cellToRegion, regionPoints, regionWeights)

Definition at line 1475 of file decompositionMethod.C.

References mesh.

Field Documentation

◆ decompositionDict_

const dictionary& decompositionDict_

protected

Definition at line 55 of file decompositionMethod.H.

Referenced by hierarchGeomDecomp::setDecompOrder().

◆ nProcessors_

label nProcessors_

protected

Definition at line 56 of file decompositionMethod.H.

Referenced by decompositionMethod::nDomains().

◆ constraints_

PtrList<decompositionConstraint> constraints_

protected

Optional constraints.

Definition at line 59 of file decompositionMethod.H.

The documentation for this class was generated from the following files:

src/parallel/decompose/decompositionMethods/decompositionMethod/decompositionMethod.H
src/parallel/decompose/decompositionMethods/decompositionMethod/decompositionMethod.C

Public Member Functions

Static Public Member Functions

Protected Attributes

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ decompositionMethod() [1/2]

◆ decompositionMethod() [2/2]

◆ ~decompositionMethod()

Member Function Documentation

◆ operator=()

◆ TypeName()

◆ declareRunTimeSelectionTable()

◆ New()

◆ nDomains()

◆ parallelAware()

◆ decompose() [1/10]

◆ decompose() [2/10]

◆ decompose() [3/10]

◆ decompose() [4/10]

◆ decompose() [5/10]

◆ decompose() [6/10]

◆ decompose() [7/10]

◆ decompose() [8/10]

◆ calcCellCells() [1/2]

◆ calcCellCells() [2/2]

◆ setConstraints()

◆ applyConstraints()

◆ decompose() [9/10]

◆ decompose() [10/10]

Field Documentation

◆ decompositionDict_

◆ nProcessors_

◆ constraints_