PTScotch domain decomposition. More...

Inheritance diagram for ptscotchDecomp:

Collaboration diagram for ptscotchDecomp:

Public Member Functions
	TypeName ("ptscotch")

	ptscotchDecomp (const dictionary &decompDict, const word &regionName="")

virtual	~ptscotchDecomp ()=default

virtual bool	parallelAware () const

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

virtual labelList	decompose (const polyMesh &mesh, const labelList &agglom, const pointField &regionPoints, const scalarField &regionWeights) const

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

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

virtual labelList	decompose (const pointField &points) const

virtual labelList	decompose (const polyMesh &mesh, const pointField &points, const scalarField &pointWeights) const=0

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

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

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

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cc, const scalarField &cWeights) const=0

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

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

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

Public Member Functions inherited from decompositionMethod
	TypeName ("decompositionMethod")

	declareRunTimeSelectionTable (autoPtr, decompositionMethod, dictionary,(const dictionary &decompDict, const word &regionName),(decompDict, regionName))

	decompositionMethod (const dictionary &decompDict, const word &regionName="")

virtual	~decompositionMethod ()=default

label	nDomains () const noexcept

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

virtual labelList	decompose (const pointField &points) const

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

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

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

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

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

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

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

Additional Inherited Members
Static Public Member Functions inherited from decompositionMethod
static label	nDomains (const dictionary &decompDict, const word &regionName="")

static const dictionary &	optionalRegionDict (const dictionary &decompDict, const word &regionName)

static autoPtr< decompositionMethod >	New (const dictionary &decompDict, const word &regionName="")

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

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

Protected Types inherited from decompositionMethod
enum	selectionType { DEFAULT = 0, EXACT = 1, MANDATORY = 2, NULL_DICT = 4 }

Protected Member Functions inherited from decompositionMethod
const dictionary &	findCoeffsDict (const word &coeffsName, int select=selectionType::DEFAULT) const

Static Protected Member Functions inherited from decompositionMethod
static const dictionary &	findCoeffsDict (const dictionary &dict, const word &coeffsName, int select=selectionType::DEFAULT)

Protected Attributes inherited from decompositionMethod
const dictionary &	decompDict_

const dictionary &	decompRegionDict_

label	nDomains_

PtrList< decompositionConstraint >	constraints_

Detailed Description

PTScotch domain decomposition.

For the main details about how to define the strategies, see scotchDecomp.

Coefficients dictionary: scotchCoeffs, coeffs.

Nonetheless, when decomposing in parallel, using writeGraph=true will write out .dgr files for debugging. For example, use these files with dgpart as follows: