Metis domain decomposition. More...

Inheritance diagram for metisDecomp:

Collaboration diagram for metisDecomp:

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

	metisDecomp (const dictionary &decompDict, const word &regionName="")
	Construct given decomposition dictionary and optional region name. More...

virtual	~metisDecomp ()=default
	Destructor. More...

virtual bool	parallelAware () const
	Is method parallel aware? More...

Public Member Functions inherited from metisLikeDecomp
virtual	~metisLikeDecomp ()=default
	Destructor. More...

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

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

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cellCentres, const scalarField &cellWeights) const
	Return for every coordinate the wanted processor number. More...

virtual labelList	decompose (const pointField &points, const scalarField &pointWeights) const
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const pointField &points) const
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const polyMesh &mesh, const pointField &points, const scalarField &pointWeights) const=0
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const polyMesh &mesh, const pointField &points) const
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField &regionPoints, const scalarField &regionWeights) const
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField &regionPoints) const
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cc, const scalarField &cWeights) const=0
	Inherit decompose from decompositionMethod. More...

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cc) const
	Inherit decompose from decompositionMethod. More...

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

labelList	decompose (const polyMesh &mesh, const scalarField &cWeights) const
	Inherit decompose from decompositionMethod. More...

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

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

	decompositionMethod (const dictionary &decompDict, const word &regionName="")
	Construct given the decomposition dictionary, optionally region-specific. More...

virtual	~decompositionMethod ()=default
	Destructor. More...

label	nDomains () const noexcept
	Number of domains. More...

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

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

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

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

virtual labelList	decompose (const labelListList &globalCellCells, const pointField &cc) const
	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) const
	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) const
	Helper: apply constraints to a decomposition. More...

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
	Decompose a mesh. More...

Protected Member Functions
virtual label	decomposeSerial (const labelList &adjncy, const labelList &xadj, const List< scalar > &cellWeights, labelList &decomp) const
	Decompose non-parallel. More...

	metisDecomp (const metisDecomp &)=delete
	No copy construct. More...

void	operator= (const metisDecomp &)=delete
	No copy assignment. More...

Protected Member Functions inherited from metisLikeDecomp
virtual label	decomposeGeneral (const labelList &adjncy, const labelList &xadj, const List< scalar > &cellWeights, labelList &decomp) const
	Serial and/or collect/distribute for parallel operation. More...

	metisLikeDecomp (const metisLikeDecomp &)=delete
	No copy construct. More...

void	operator= (const metisLikeDecomp &)=delete
	No copy assignment. More...

	metisLikeDecomp (const word &derivedType, const dictionary &decompDict, int select=selectionType::NULL_DICT)
	Construct for derived type name and decomposition dictionary. More...

	metisLikeDecomp (const word &derivedType, const dictionary &decompDict, const word &regionName, int select=selectionType::NULL_DICT)
	Construct for derived type name, decomposition dictionary and (optional) region name. More...

Protected Member Functions inherited from decompositionMethod
const dictionary &	findCoeffsDict (const word &coeffsName, int select=selectionType::DEFAULT) const
	Locate coeffsName dictionary or the fallback "coeffs" dictionary. More...

Additional Inherited Members
Static Public Member Functions inherited from decompositionMethod
static label	nDomains (const dictionary &decompDict, const word &regionName="")
	Return region-specific or top-level `numberOfSubdomains` entry. More...

static const dictionary &	optionalRegionDict (const dictionary &decompDict, const word &regionName)
	Return an optional region-specific dictionary from "regions" sub-dictionary, or dictionary::null on failure. More...

static autoPtr< decompositionMethod >	New (const dictionary &decompDict, const word &regionName="")
	Return a reference to the selected decomposition method, optionally region-specific. 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 Types inherited from decompositionMethod
enum	selectionType { DEFAULT = 0, EXACT = 1, MANDATORY = 2, NULL_DICT = 4 }
	Selection type when handling the coefficients dictionary. More...

Static Protected Member Functions inherited from decompositionMethod
static const dictionary &	findCoeffsDict (const dictionary &dict, const word &coeffsName, int select=selectionType::DEFAULT)
	Locate coeffsName dictionary or the fallback "coeffs" dictionary within an enclosing dictionary. More...

Protected Attributes inherited from metisLikeDecomp
const dictionary &	coeffsDict_
	Coefficients for all derived methods. More...

Protected Attributes inherited from decompositionMethod
const dictionary &	decompDict_
	Top-level decomposition dictionary (eg, decomposeParDict) More...

const dictionary &	decompRegionDict_
	Region-specific decomposition dictionary information. More...

label	nDomains_
	Number of domains for the decomposition. More...

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

Detailed Description

Metis domain decomposition.

When run in parallel will collect the entire graph on to the master, decompose and send back.

Coefficients dictionary: metisCoeffs, coeffs.

numberOfSubdomains   N;
method               metis;

metisCoeffs
{
    method           recursive;  // k-way
    options          ( ...);
    processorWeights ( ... );
}

Method coefficients:

Property	Description	Required	Default
`method`	recursive / k-way	no	recursive
`options`	metis options	no
`processorWeights`	list of weighting per partition	no

Source files

Definition at line 88 of file metisDecomp.H.

Constructor & Destructor Documentation

◆ metisDecomp() [1/2]

metisDecomp ( const metisDecomp & )

protecteddelete

No copy construct.

◆ metisDecomp() [2/2]

metisDecomp	(	const dictionary &	decompDict,
		const word &	regionName = `""`
	)

explicit

Construct given decomposition dictionary and optional region name.

Definition at line 68 of file dummyMetisDecomp.C.

◆ ~metisDecomp()

virtual ~metisDecomp ( )

virtualdefault

Destructor.

Member Function Documentation

◆ decomposeSerial()

Foam::label decomposeSerial	(	const labelList &	adjncy,
		const labelList &	xadj,
		const List< scalar > &	cellWeights,
		labelList &	decomp
	)		const

protectedvirtual

Decompose non-parallel.

Implements metisLikeDecomp.

Definition at line 51 of file dummyMetisDecomp.C.

References Foam::exit(), Foam::FatalError, FatalErrorInFunction, and notImplementedMessage.

Here is the call graph for this function:

◆ operator=()

void operator= ( const metisDecomp & )

protecteddelete

No copy assignment.

◆ TypeName()

TypeName ( "metis" )

Runtime type information.

◆ parallelAware()

virtual bool parallelAware ( ) const

inlinevirtual

Is method parallel aware?

(i.e. does it synchronize domains across proc boundaries)

Implements decompositionMethod.

Definition at line 147 of file metisDecomp.H.

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

src/parallel/decompose/metisDecomp/metisDecomp.H
src/dummyThirdParty/metisDecomp/dummyMetisDecomp.C
src/parallel/decompose/metisDecomp/metisDecomp.C

Public Member Functions

Protected Member Functions

Additional Inherited Members