decompositionMethod Class Referenceabstract

Abstract base class for decomposition. More...

Inheritance diagram for decompositionMethod:
Collaboration diagram for decompositionMethod:

Public Member Functions

 TypeName ("decompositionMethod")
 Runtime type information. More...
 
 declareRunTimeSelectionTable (autoPtr, decompositionMethod, decomposer,(const dictionary &decompositionDict),(decompositionDict))
 
 declareRunTimeSelectionTable (autoPtr, decompositionMethod, distributor,(const dictionary &decompositionDict),(decompositionDict))
 
 decompositionMethod (const dictionary &decompositionDict)
 Construct given the decomposition dictionary. More...
 
 decompositionMethod (const decompositionMethod &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~decompositionMethod ()
 Destructor. More...
 
label nDomains () const
 
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...
 
void operator= (const decompositionMethod &)=delete
 Disallow default bitwise assignment. More...
 

Static Public Member Functions

static autoPtr< decompositionMethodNewDecomposer (const dictionary &decompositionDict)
 Return a reference to the selected decomposition method. More...
 
static autoPtr< decompositionMethodNewDistributor (const dictionary &decompositionDict)
 Return a reference to the selected decomposition method. More...
 
static dictionary decomposeParDict (const Time &time)
 Read and return the decomposeParDict. 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

dictionary decompositionDict_
 
label nProcessors_
 
PtrList< decompositionConstraintconstraints_
 Optional constraints. More...
 

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 dictionary decompositionDict)

Construct given the decomposition dictionary.

Definition at line 54 of file decompositionMethod.C.

References List< T >::append(), decompositionMethod::constraints_, decompositionMethod::decompositionDict_, dict, forAllConstIter, dictionary::found(), UList< T >::last(), decompositionConstraint::New(), and dictionary::subDict().

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◆ decompositionMethod() [2/2]

Disallow default bitwise copy construction.

◆ ~decompositionMethod()

virtual ~decompositionMethod ( )
inlinevirtual

Destructor.

Definition at line 117 of file decompositionMethod.H.

Member Function Documentation

◆ TypeName()

TypeName ( "decompositionMethod"  )

Runtime type information.

◆ declareRunTimeSelectionTable() [1/2]

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

◆ declareRunTimeSelectionTable() [2/2]

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

◆ NewDecomposer()

Foam::autoPtr< Foam::decompositionMethod > NewDecomposer ( const dictionary decompositionDict)
static

Return a reference to the selected decomposition method.

Definition at line 96 of file decompositionMethod.C.

References Foam::endl(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, Foam::Info, Foam::libs, dictionary::lookupBackwardsCompatible(), Foam::nl, and dlLibraryTable::open().

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

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◆ NewDistributor()

Foam::autoPtr< Foam::decompositionMethod > NewDistributor ( const dictionary decompositionDict)
static

Return a reference to the selected decomposition method.

Definition at line 136 of file decompositionMethod.C.

References Foam::endl(), FatalErrorInFunction, Foam::Info, Foam::libs, dictionary::lookupBackwardsCompatible(), and dlLibraryTable::open().

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◆ nDomains()

label nDomains ( ) const
inline

Definition at line 123 of file decompositionMethod.H.

References decompositionMethod::nProcessors_.

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

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◆ decomposeParDict()

Foam::dictionary decomposeParDict ( const Time time)
static

Read and return the decomposeParDict.

Definition at line 175 of file decompositionMethod.C.

References TimePaths::system().

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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 135 of file decompositionMethod.H.

References NotImplemented.

Referenced by meshRefinement::balance().

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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, simpleGeomDecomp, and hierarchGeomDecomp.

Definition at line 146 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 zoltanDecomp, scotchDecomp, ptscotchDecomp, metisDecomp, structuredDecomp, multiLevelDecomp, randomDecomp, noDecomp, manualDecomp, hierarchGeomDecomp, 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 192 of file decompositionMethod.C.

References points, and List< T >::size().

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◆ 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 zoltanDecomp, scotchDecomp, ptscotchDecomp, and metisDecomp.

Definition at line 204 of file decompositionMethod.C.

◆ 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 245 of file decompositionMethod.C.

References List< T >::size().

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◆ 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 zoltanDecomp, scotchDecomp, ptscotchDecomp, metisDecomp, structuredDecomp, simpleGeomDecomp, randomDecomp, noDecomp, multiLevelDecomp, manualDecomp, and hierarchGeomDecomp.

◆ 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 264 of file decompositionMethod.C.

References List< T >::size().

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◆ 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 276 of file decompositionMethod.C.

Referenced by renumberMethod::renumber(), 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

◆ 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 1008 of file decompositionMethod.C.

References List< T >::clear(), PtrList< T >::clear(), forAll, primitiveMesh::nFaces(), and List< T >::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 1037 of file decompositionMethod.C.

References forAll.

◆ 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

◆ 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 1062 of file decompositionMethod.C.

◆ operator=()

void operator= ( const decompositionMethod )
delete

Disallow default bitwise assignment.

Member Data Documentation

◆ decompositionDict_

dictionary decompositionDict_
protected

Definition at line 54 of file decompositionMethod.H.

Referenced by decompositionMethod::decompositionMethod().

◆ nProcessors_

label nProcessors_
protected

Definition at line 55 of file decompositionMethod.H.

Referenced by geomDecomp::geomDecomp(), and decompositionMethod::nDomains().

◆ constraints_

PtrList<decompositionConstraint> constraints_
protected

Optional constraints.

Definition at line 58 of file decompositionMethod.H.

Referenced by decompositionMethod::decompositionMethod().


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