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PyTrilinos
Development
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Public Member Functions | |
| def | __init__ |
| def | SetParameters |
| def | Initialize |
| def | IsInitialized |
| def | Compute |
| def | IsComputed |
| def | ApplyInverse |
| def | Apply |
| def | Condest |
| def | SetUseTranspose |
| def | NormInf |
| def | HasNormInf |
| def | UseTranspose |
| def | OperatorDomainMap |
| def | OperatorRangeMap |
| def | Comm |
| def | Matrix |
| def | L |
| def | U |
| def | Label |
| def | SetLabel |
| def | NumInitialize |
| def | NumCompute |
| def | NumApplyInverse |
| def | InitializeTime |
| def | ComputeTime |
| def | ApplyInverseTime |
| def | InitializeFlops |
| def | ComputeFlops |
| def | ApplyInverseFlops |
| def | LevelOfFill |
| def | RelaxValue |
| def | AbsoluteThreshold |
| def | RelativeThreshold |
| def | DropTolerance |
| def | NumGlobalNonzeros |
| def | NumMyNonzeros |
Public Attributes | |
| this | |
Ifpack_ILUT: A class for constructing and using an incomplete LU factorization of a given Epetra_RowMatrix. The Ifpack_ILUT class computes a "Relaxed" ILUT factorization with dual threshold dropping of small elements of a given Epetra_RowMatrix. This implementation does not use the algorithm that is described in ifp_ilu. The algorithm drops entries in a row (i) of matrix A that are smaller than drop_tolerance even before the factorization of row i then computes the factorization for that row. This is different than the usual algorithm where the drop tolerance is applied to the factored rows. The complete list of supported parameters is reported in page ifp_params. Marzio Sala, SNL 9214. C++ includes: Ifpack_ILUT.h
| def PyTrilinos.IFPACK.ILUT.__init__ | ( | self, | |
| args | |||
| ) |
__init__(Ifpack_ILUT self, RowMatrix A) -> ILUT Ifpack_ILUT::Ifpack_ILUT(const Epetra_RowMatrix *A) Ifpack_ILUT constuctor with variable number of indices per row.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.AbsoluteThreshold | ( | self, | |
| args | |||
| ) |
AbsoluteThreshold(ILUT self) -> double double Ifpack_ILUT::AbsoluteThreshold() const Get absolute threshold value.
| def PyTrilinos.IFPACK.ILUT.Apply | ( | self, | |
| args | |||
| ) |
Apply(ILUT self, Epetra_MultiVector X, Epetra_MultiVector Y) -> int int Ifpack_ILUT::Apply(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.ApplyInverse | ( | self, | |
| args | |||
| ) |
ApplyInverse(ILUT self, Epetra_MultiVector X, Epetra_MultiVector Y) -> int int Ifpack_ILUT::ApplyInverse(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const Returns the result of a Ifpack_ILUT forward/back solve on a Epetra_MultiVector X in Y. Parameters: ----------- X: - (In) A Epetra_MultiVector of dimension NumVectors to solve for. Y: - (Out) A Epetra_MultiVector of dimension NumVectorscontaining result. Integer error code, set to 0 if successful.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.ApplyInverseFlops | ( | self, | |
| args | |||
| ) |
ApplyInverseFlops(ILUT self) -> double virtual double Ifpack_ILUT::ApplyInverseFlops() const Returns the number of flops in the application of the preconditioner.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.ApplyInverseTime | ( | self, | |
| args | |||
| ) |
ApplyInverseTime(ILUT self) -> double virtual double Ifpack_ILUT::ApplyInverseTime() const Returns the time spent in ApplyInverse().
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.Comm | ( | self, | |
| args | |||
| ) |
Comm(ILUT self) -> Comm const Epetra_Comm& Ifpack_ILUT::Comm() const Returns the Epetra_BlockMap object associated with the range of this matrix operator.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.Compute | ( | self, | |
| args | |||
| ) |
Compute(ILUT self) -> int int Ifpack_ILUT::Compute() Compute IC factor U using the specified graph, diagonal perturbation thresholds and relaxation parameters. This function computes the RILU(k) factors L and U using the current: Ifpack_IlukGraph specifying the structure of L and U. Value for the RILU(k) relaxation parameter. Value for the a priori diagonal threshold values. InitValues() must be called before the factorization can proceed.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.ComputeFlops | ( | self, | |
| args | |||
| ) |
ComputeFlops(ILUT self) -> double virtual double Ifpack_ILUT::ComputeFlops() const Returns the number of flops in the computation phase.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.ComputeTime | ( | self, | |
| args | |||
| ) |
ComputeTime(ILUT self) -> double virtual double Ifpack_ILUT::ComputeTime() const Returns the time spent in Compute().
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.Condest | ( | self, | |
| args | |||
| ) |
Condest(ILUT self, Ifpack_CondestType const CT=Ifpack_Cheap, int const MaxIters=1550, double const Tol=1e-9,
RowMatrix Matrix_in=None) -> double
double
Ifpack_ILUT::Condest() const
Returns the computed estimated condition number, or -1.0 if no
computed.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.DropTolerance | ( | self, | |
| args | |||
| ) |
DropTolerance(ILUT self) -> double double Ifpack_ILUT::DropTolerance() const Gets the dropping tolerance.
| def PyTrilinos.IFPACK.ILUT.HasNormInf | ( | self, | |
| args | |||
| ) |
HasNormInf(ILUT self) -> bool bool Ifpack_ILUT::HasNormInf() const Returns false because this class cannot compute an Inf-norm.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.Initialize | ( | self, | |
| args | |||
| ) |
Initialize(ILUT self) -> int int Ifpack_ILUT::Initialize() Initialize L and U with values from user matrix A. Copies values from the user's matrix into the nonzero pattern of L and U. Parameters: ----------- In: A - User matrix to be factored. WARNING: The graph of A must be identical to the graph passed in to Ifpack_IlukGraph constructor.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.InitializeFlops | ( | self, | |
| args | |||
| ) |
InitializeFlops(ILUT self) -> double virtual double Ifpack_ILUT::InitializeFlops() const Returns the number of flops in the initialization phase.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.InitializeTime | ( | self, | |
| args | |||
| ) |
InitializeTime(ILUT self) -> double virtual double Ifpack_ILUT::InitializeTime() const Returns the time spent in Initialize().
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.IsComputed | ( | self, | |
| args | |||
| ) |
IsComputed(ILUT self) -> bool bool Ifpack_ILUT::IsComputed() const If factor is completed, this query returns true, otherwise it returns false.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.IsInitialized | ( | self, | |
| args | |||
| ) |
IsInitialized(ILUT self) -> bool bool Ifpack_ILUT::IsInitialized() const Returns true if the preconditioner has been successfully initialized.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.L | ( | self, | |
| args | |||
| ) |
L(ILUT self) -> CrsMatrix const Epetra_CrsMatrix& Ifpack_ILUT::L() const Returns a reference to the L factor.
| def PyTrilinos.IFPACK.ILUT.Label | ( | self, | |
| args | |||
| ) |
Label(ILUT self) -> char const * const char* Ifpack_ILUT::Label() const Returns the label of this object.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.LevelOfFill | ( | self, | |
| args | |||
| ) |
LevelOfFill(ILUT self) -> double double Ifpack_ILUT::LevelOfFill() const
| def PyTrilinos.IFPACK.ILUT.Matrix | ( | self, | |
| args | |||
| ) |
Matrix(ILUT self) -> RowMatrix const Epetra_RowMatrix& Ifpack_ILUT::Matrix() const Returns a reference to the matrix to be preconditioned.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.NormInf | ( | self, | |
| args | |||
| ) |
NormInf(ILUT self) -> double double Ifpack_ILUT::NormInf() const Returns 0.0 because this class cannot compute Inf-norm.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.NumApplyInverse | ( | self, | |
| args | |||
| ) |
NumApplyInverse(ILUT self) -> int virtual int Ifpack_ILUT::NumApplyInverse() const Returns the number of calls to ApplyInverse().
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.NumCompute | ( | self, | |
| args | |||
| ) |
NumCompute(ILUT self) -> int virtual int Ifpack_ILUT::NumCompute() const Returns the number of calls to Compute().
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.NumGlobalNonzeros | ( | self, | |
| args | |||
| ) |
NumGlobalNonzeros(ILUT self) -> int int Ifpack_ILUT::NumGlobalNonzeros() const Returns the number of nonzero entries in the global graph.
| def PyTrilinos.IFPACK.ILUT.NumInitialize | ( | self, | |
| args | |||
| ) |
NumInitialize(ILUT self) -> int virtual int Ifpack_ILUT::NumInitialize() const Returns the number of calls to Initialize().
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.NumMyNonzeros | ( | self, | |
| args | |||
| ) |
NumMyNonzeros(ILUT self) -> int int Ifpack_ILUT::NumMyNonzeros() const Returns the number of nonzero entries in the local graph.
| def PyTrilinos.IFPACK.ILUT.OperatorDomainMap | ( | self, | |
| args | |||
| ) |
OperatorDomainMap(ILUT self) -> Map const Epetra_Map& Ifpack_ILUT::OperatorDomainMap() const Returns the Epetra_Map object associated with the domain of this operator.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.OperatorRangeMap | ( | self, | |
| args | |||
| ) |
OperatorRangeMap(ILUT self) -> Map const Epetra_Map& Ifpack_ILUT::OperatorRangeMap() const Returns the Epetra_Map object associated with the range of this operator.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.RelativeThreshold | ( | self, | |
| args | |||
| ) |
RelativeThreshold(ILUT self) -> double double Ifpack_ILUT::RelativeThreshold() const Get relative threshold value.
| def PyTrilinos.IFPACK.ILUT.RelaxValue | ( | self, | |
| args | |||
| ) |
RelaxValue(ILUT self) -> double double Ifpack_ILUT::RelaxValue() const Set relative threshold value.
| def PyTrilinos.IFPACK.ILUT.SetLabel | ( | self, | |
| args | |||
| ) |
SetLabel(ILUT self, char const * Label_in) -> int int Ifpack_ILUT::SetLabel(const char *Label_in) Sets the label for this object.
| def PyTrilinos.IFPACK.ILUT.SetParameters | ( | self, | |
| args | |||
| ) |
SetParameters(ILUT self, ParameterList parameterlis) -> int int Ifpack_ILUT::SetParameters(Teuchos::ParameterList ¶meterlis) Set parameters using a Teuchos::ParameterList object.
Reimplemented from PyTrilinos.IFPACK.Preconditioner.
| def PyTrilinos.IFPACK.ILUT.SetUseTranspose | ( | self, | |
| args | |||
| ) |
SetUseTranspose(ILUT self, bool UseTranspose_in) -> int int Ifpack_ILUT::SetUseTranspose(bool UseTranspose_in) If set true, transpose of this operator will be applied. This flag allows the transpose of the given operator to be used implicitly. Setting this flag affects only the Apply() and ApplyInverse() methods. If the implementation of this interface does not support transpose use, this method should return a value of -1. Parameters: ----------- UseTranspose_in: - (In) If true, multiply by the transpose of operator, otherwise just use operator. Always returns 0.
Reimplemented from PyTrilinos.Epetra.Operator.
| def PyTrilinos.IFPACK.ILUT.U | ( | self, | |
| args | |||
| ) |
U(ILUT self) -> CrsMatrix const Epetra_CrsMatrix& Ifpack_ILUT::U() const Returns a reference to the U factor.
| def PyTrilinos.IFPACK.ILUT.UseTranspose | ( | self, | |
| args | |||
| ) |
UseTranspose(ILUT self) -> bool bool Ifpack_ILUT::UseTranspose() const Returns the current UseTranspose setting.
Reimplemented from PyTrilinos.Epetra.Operator.
1.7.6.1