PTScotch domain decomposition. More...
Public Member Functions | |
ptscotchDecomp (const ptscotchDecomp &)=delete | |
No copy construct. More... | |
void | operator= (const ptscotchDecomp &)=delete |
No copy assignment. More... | |
TypeName ("ptscotch") | |
Runtime type information. More... | |
ptscotchDecomp (const label numDomains) | |
Construct with number of domains (no coefficients or constraints) More... | |
ptscotchDecomp (const dictionary &decompDict, const word ®ionName="") | |
Construct given decomposition dictionary and optional region name. More... | |
virtual | ~ptscotchDecomp ()=default |
Destructor. More... | |
virtual bool | parallelAware () const |
Knows about coupled boundaries. More... | |
virtual labelList | decompose (const polyMesh &mesh, const pointField &points=pointField::null(), const scalarField &pointWeights=scalarField::null()) const |
Return for every coordinate the wanted processor number. More... | |
virtual labelList | decompose (const polyMesh &mesh, const labelList &agglom, const pointField &agglomPoints, const scalarField &agglomWeights=scalarField::null()) const |
Return for every coordinate the wanted processor number. More... | |
virtual labelList | decompose (const CompactListList< label > &globalCellCells, const pointField &cc=pointField::null(), const scalarField &cWeights=scalarField::null()) const |
Return for every coordinate the wanted processor number. More... | |
virtual labelList | decompose (const labelListList &globalCellCells, const pointField &cc=pointField::null(), const scalarField &cWeights=scalarField::null()) const |
Return for every coordinate the wanted processor number. More... | |
virtual labelList | decompose (const pointField &points, const scalarField &pointWeights=scalarField::null()) const |
Inherit decompose from decompositionMethod. More... | |
virtual labelList | decompose (const polyMesh &mesh, const pointField &points, const scalarField &pointWeights=scalarField::null()) const=0 |
Inherit decompose from decompositionMethod. More... | |
virtual labelList | decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField ®ionPoints, const scalarField ®ionWeights=scalarField::null()) const |
Inherit decompose from decompositionMethod. More... | |
virtual labelList | decompose (const CompactListList< label > &globalCellCells, const pointField &cc, const scalarField &cWeights=scalarField::null()) const=0 |
Inherit decompose from decompositionMethod. More... | |
virtual labelList | decompose (const labelListList &globalCellCells, const pointField &cc, const scalarField &cWeights=scalarField::null()) const=0 |
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 | |
decompositionMethod (const decompositionMethod &)=delete | |
No copy construct. More... | |
void | operator= (const decompositionMethod &)=delete |
No copy assignment. More... | |
TypeName ("decompositionMethod") | |
Runtime type information. More... | |
declareRunTimeSelectionTable (autoPtr, decompositionMethod, dictionary,(const dictionary &decompDict, const word ®ionName),(decompDict, regionName)) | |
decompositionMethod (const dictionary &decompDict, const word ®ionName="") | |
Construct given the decomposition dictionary, optionally region-specific. More... | |
virtual | ~decompositionMethod ()=default |
Destructor. More... | |
label | nDomains () const noexcept |
Number of domains. More... | |
virtual bool | geometric () const |
True if the method is purely geometric, often using cell centre points. More... | |
virtual labelList | decompose (const pointField &points, const scalarField &pointWeights=scalarField::null()) const |
Return the wanted processor number for every coordinate, using uniform or specified point weights. 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... | |
Additional Inherited Members | |
Static Public Member Functions inherited from decompositionMethod | |
static label | nDomains (const dictionary &decompDict, const word ®ionName="") |
Return region-specific or top-level numberOfSubdomains entry. More... | |
static const dictionary & | optionalRegionDict (const dictionary &decompDict, const word ®ionName) |
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 ®ionName="") |
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 parallel, CompactListList< label > &cellCells) |
Determine (local or global) cellCells from mesh agglomeration. More... | |
static void | calcCellCells (const polyMesh &mesh, const labelList &agglom, const label nLocalCoarse, const bool parallel, CompactListList< label > &cellCells, CompactListList< scalar > &cellCellWeights) |
Determine (local or global) cellCells and face weights from mesh agglomeration. 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... | |
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... | |
decompositionMethod (const label numDomains) | |
Construct with specified number of domains, no coefficients or constraints. 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 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... | |
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:
mpirun -np 4 dgpart 2 'region0_%r.dgr'
where:
Definition at line 64 of file ptscotchDecomp.H.
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delete |
No copy construct.
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explicit |
Construct with number of domains (no coefficients or constraints)
Definition at line 513 of file ptscotchDecomp.C.
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explicit |
Construct given decomposition dictionary and optional region name.
Definition at line 521 of file ptscotchDecomp.C.
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virtualdefault |
Destructor.
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delete |
No copy assignment.
TypeName | ( | "ptscotch" | ) |
Runtime type information.
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inlinevirtual |
Knows about coupled boundaries.
Implements decompositionMethod.
Definition at line 143 of file ptscotchDecomp.H.
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virtual |
Return for every coordinate the wanted processor number.
Use the mesh connectivity (if needed). See note on weights in scotchDecomp.H
Implements decompositionMethod.
Definition at line 534 of file ptscotchDecomp.C.
References globalMeshData::calcCellCells(), UList< T >::empty(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, Foam::getGraphPathBase(), mesh, primitiveMesh::nCells(), CompactListList< T >::offsets(), points, UList< T >::size(), and CompactListList< T >::values().
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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. See note on weights in scotchDecomp.H
Reimplemented from decompositionMethod.
Definition at line 573 of file ptscotchDecomp.C.
References globalMeshData::calcCellCells(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, Foam::getGraphPathBase(), mesh, primitiveMesh::nCells(), CompactListList< T >::offsets(), UList< T >::size(), and CompactListList< T >::values().
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virtual |
Return for every coordinate the wanted processor number.
Implements decompositionMethod.
Definition at line 622 of file ptscotchDecomp.C.
References UList< T >::empty(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, CompactListList< T >::offsets(), UList< T >::size(), CompactListList< T >::size(), and CompactListList< T >::values().
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virtual |
Return for every coordinate the wanted processor number.
Explicitly provided mesh connectivity. The connectivity is equal to mesh.cellCells() except for
Implements decompositionMethod.
Definition at line 658 of file ptscotchDecomp.C.
References UList< T >::empty(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, and UList< T >::size().
Foam::labelList decompose |
Inherit decompose from decompositionMethod.
Definition at line 941 of file decompositionMethod.C.
virtual labelList decompose |
Inherit decompose from decompositionMethod.
Foam::labelList decompose |
Inherit decompose from decompositionMethod.
Definition at line 396 of file decompositionMethod.C.
virtual labelList decompose |
Inherit decompose from decompositionMethod.
virtual labelList decompose |
Inherit decompose from decompositionMethod.
Foam::labelList decompose |
Inherit decompose from decompositionMethod.
Definition at line 476 of file decompositionMethod.C.
Foam::labelList decompose |
Inherit decompose from decompositionMethod.
Definition at line 887 of file decompositionMethod.C.