Domain decomposition using METIS-like data structures. More...
Public Member Functions | |
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 ®ionPoints, const scalarField ®ionWeights) 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 ®ionPoints, const scalarField ®ionWeights) const |
Inherit decompose from decompositionMethod. More... | |
virtual labelList | decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField ®ionPoints) 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 ®ionName),(decompDict, regionName)) | |
decompositionMethod (const dictionary &decompDict, const word ®ionName="") | |
virtual | ~decompositionMethod ()=default |
Destructor. More... | |
label | nDomains () const noexcept |
Number of domains. More... | |
virtual bool | parallelAware () const =0 |
Is method parallel aware? 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 scalarField &pointWeights) const =0 |
Return for every coordinate the wanted processor number. 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 ®ionPoints, const scalarField ®ionWeights) const |
Return for every coordinate the wanted processor number. Gets. More... | |
virtual labelList | decompose (const polyMesh &mesh, const labelList &cellToRegion, const pointField ®ionPoints) const |
Like decompose but with uniform weights on the regions. More... | |
virtual labelList | decompose (const labelListList &globalCellCells, const pointField &cc, const scalarField &cWeights) const =0 |
Return for every coordinate the wanted processor number. 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 | decomposeGeneral (const labelList &adjncy, const labelList &xadj, const List< scalar > &cellWeights, labelList &decomp) const |
Serial and/or collect/distribute for parallel operation. More... | |
virtual label | decomposeSerial (const labelList &adjncy, const labelList &xadj, const List< scalar > &cellWeights, labelList &decomp) const =0 |
Decomposition with metis-like parameters. 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 ®ionName, int select=selectionType::NULL_DICT) | |
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... | |
Protected Attributes | |
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... | |
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) |
static autoPtr< decompositionMethod > | New (const dictionary &decompDict, const word ®ionName="") |
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) |
Domain decomposition using METIS-like data structures.
When run in parallel will collect the entire graph on to the master, decompose and send back.
Definition at line 51 of file metisLikeDecomp.H.
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protecteddelete |
No copy construct.
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inlineprotected |
Construct for derived type name and decomposition dictionary.
Definition at line 94 of file metisLikeDecomp.H.
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Construct for derived type name, decomposition dictionary and (optional) region name
The default search for the coefficients will return dictionary::null on failure. This avoids a name clash of a metis "method" with the top level.
Definition at line 192 of file metisLikeDecomp.C.
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virtualdefault |
Destructor.
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protectedvirtual |
Serial and/or collect/distribute for parallel operation.
Definition at line 34 of file metisLikeDecomp.C.
References UList< T >::cdata_bytes(), List< T >::clear(), UList< T >::data_bytes(), metisLikeDecomp::decomposeSerial(), UList< T >::empty(), Foam::endl(), globalIndex::gather(), Foam::Info, globalIndex::inplaceToGlobal(), UList< T >::last(), globalIndex::localSize(), splitCell::master(), UPstream::masterNo(), Foam::max(), UPstream::msgType(), UPstream::nonBlocking, UPstream::nRequests(), UPstream::parRun(), globalIndex::range(), kEpsilonLopesdaCosta< BasicTurbulenceModel >::read(), List< T >::resize(), List< T >::resize_nocopy(), Foam::returnReduce(), globalIndex::scatter(), UList< T >::size(), UList< T >::size_bytes(), globalIndex::subProcs(), globalIndex::totalSize(), Foam::type(), UPstream::waitRequests(), UPstream::worldComm, and ObukhovLength::write().
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protectedpure virtual |
Decomposition with metis-like parameters.
Implemented in kahipDecomp, metisDecomp, and scotchDecomp.
Referenced by metisLikeDecomp::decomposeGeneral().
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protecteddelete |
No copy assignment.
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virtual |
Return for every coordinate the wanted processor number.
Uses the mesh connectivity (if needed). Weights get normalised so the minimum value is 1 before truncation to an integer so the weights should be multiples of the minimum value. The overall sum of weights might otherwise overflow.
Implements decompositionMethod.
Reimplemented in scotchDecomp, and scotchDecomp.
Definition at line 207 of file metisLikeDecomp.C.
References Foam::exit(), Foam::FatalError, FatalErrorInFunction, Foam::identity(), mesh, primitiveMesh::nCells(), Foam::nl, CompactListList< T >::offsets(), points, UList< T >::size(), and CompactListList< T >::values().
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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 above.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp, and scotchDecomp.
Definition at line 248 of file metisLikeDecomp.C.
References Foam::exit(), Foam::FatalError, FatalErrorInFunction, forAll, mesh, primitiveMesh::nCells(), CompactListList< T >::offsets(), UList< T >::size(), and CompactListList< T >::values().
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Return for every coordinate the wanted processor number.
Explicitly provided mesh connectivity. The connectivity is equal to mesh.cellCells() except for
Implements decompositionMethod.
Reimplemented in scotchDecomp, and scotchDecomp.
Definition at line 301 of file metisLikeDecomp.C.
References Foam::exit(), Foam::FatalError, FatalErrorInFunction, and UList< T >::size().
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Inherit decompose from decompositionMethod.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 222 of file decompositionMethod.C.
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Inherit decompose from decompositionMethod.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 229 of file decompositionMethod.C.
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Inherit decompose from decompositionMethod.
Implements decompositionMethod.
Reimplemented in scotchDecomp.
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Inherit decompose from decompositionMethod.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 244 of file decompositionMethod.C.
References Foam::cfindCoeffsDict(), and dict.
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Inherit decompose from decompositionMethod.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 258 of file decompositionMethod.C.
References Foam::abort(), dict, Foam::endl(), Foam::FatalIOError, and dictionary::name().
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Inherit decompose from decompositionMethod.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 267 of file decompositionMethod.C.
References dictionary::null.
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Inherit decompose from decompositionMethod.
Implements decompositionMethod.
Reimplemented in scotchDecomp.
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Inherit decompose from decompositionMethod.
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 292 of file decompositionMethod.C.
References Foam::cfindCoeffsDict().
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Inherit decompose from decompositionMethod.
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 |
Reimplemented from decompositionMethod.
Reimplemented in scotchDecomp.
Definition at line 367 of file decompositionMethod.C.
References Foam::endl(), Foam::Info, and regionName.
Foam::labelList decompose | ( | const polyMesh & | mesh, |
const scalarField & | cWeights | ||
) | const |
Inherit decompose from decompositionMethod.
Definition at line 387 of file decompositionMethod.C.
References mesh, points, and UList< T >::size().
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protected |
Coefficients for all derived methods.
Definition at line 60 of file metisLikeDecomp.H.