50 #include "Epetra_Vector.h"
51 #include "Epetra_CrsMatrix.h"
52 #include "Epetra_RowMatrix.h"
53 #include "Epetra_Time.h"
54 #include "Teuchos_RefCountPtr.hpp"
187 const int MaxIters = 1550,
188 const double Tol = 1e-9,
205 #ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
263 virtual std::ostream&
Print(std::ostream& os)
const;
340 Teuchos::RefCountPtr<Epetra_RowMatrix>
A_;
342 Teuchos::RefCountPtr<Epetra_CrsMatrix>
U_;
343 Teuchos::RefCountPtr<Epetra_Vector>
D_;
385 #if defined(Ifpack_SHOW_DEPRECATED_WARNINGS)
387 #warning "The Ifpack package is deprecated"
double InitializeTime_
Contains the time for all successful calls to Initialize().
const Epetra_Vector & D() const
Returns the address of the D factor associated with this factored matrix.
double ComputeTime_
Contains the time for all successful calls to Compute().
virtual int NumInitialize() const
Returns the number of calls to Initialize().
bool IsComputed() const
If factor is completed, this query returns true, otherwise it returns false.
bool UseTranspose() const
Returns the current UseTranspose setting.
const Epetra_Map & OperatorDomainMap() const
Returns the Epetra_Map object associated with the domain of this operator.
bool HasNormInf() const
Returns false because this class cannot compute an Inf-norm.
int SetParameters(Teuchos::ParameterList ¶meterlis)
Set parameters using a Teuchos::ParameterList object.
virtual double ApplyInverseTime() const
Returns the time spent in ApplyInverse().
double RelativeThreshold() const
Epetra_Time Time_
Used for timing purposes.
Teuchos::RefCountPtr< Epetra_RowMatrix > A_
double AbsoluteThreshold() const
Ifpack_IC(Epetra_RowMatrix *A)
Ifpack_IC constuctor with variable number of indices per row.
virtual ~Ifpack_IC()
Ifpack_IC Destructor.
const Epetra_RowMatrix & Matrix() const
Returns a pointer to the matrix to be preconditioned.
double ApplyInverseTime_
Contains the time for all successful calls to ApplyInverse().
int SetParameter(const std::string, const double)
Teuchos::RefCountPtr< Epetra_Vector > D_
virtual double ComputeTime() const
Returns the time spent in Compute().
const Epetra_Map & OperatorRangeMap() const
Returns the Epetra_Map object associated with the range of this operator.
Teuchos::RefCountPtr< Epetra_CrsMatrix > U_
Ifpack_CondestType
Ifpack_CondestType: enum to define the type of condition number estimate.
int Initialize()
Initialize L and U with values from user matrix A.
void SetAbsoluteThreshold(double Athresh)
Set absolute threshold value.
double GetAbsoluteThreshold()
Get absolute threshold value.
double ApplyInverseFlops_
Contain sthe number of flops for ApplyInverse().
int ApplyInverse(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
Returns the result of a Ifpack_IC forward/back solve on a Epetra_MultiVector X in Y...
Epetra_RowMatrix & Matrix()
Ifpack_ScalingType enumerable type.
const Epetra_Comm & Comm_
double LevelOfFill() const
Ifpack_Preconditioner: basic class for preconditioning in Ifpack.
const Epetra_CrsMatrix & U() const
Returns the address of the U factor associated with this factored matrix.
double ComputeFlops_
Contains the number of flops for Compute().
long long NumGlobalNonzeros64() const
virtual double ApplyInverseFlops() const
Returns the number of flops in the application of the preconditioner.
virtual std::ostream & Print(std::ostream &os) const
Prints basic information on iostream. This function is used by operator<<.
int SetLabel(const char *Label_in)
const char * Label() const
int SetParameter(const std::string, const int)
int NumCompute_
Contains the number of successful call to Compute().
double GetRelativeThreshold()
Get relative threshold value.
int Apply(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
bool IsInitialized() const
Returns true if the preconditioner has been successfully initialized, false otherwise.
int SetUseTranspose(bool UseTranspose_in)
If set true, transpose of this operator will be applied.
void SetRelativeThreshold(double Rthresh)
Set relative threshold value.
Ifpack_IC: A class for constructing and using an incomplete Cholesky factorization of a given Epetra_...
double Condest() const
Returns the computed condition number estimate, or -1.0 if not computed.
double DropTolerance() const
virtual double InitializeTime() const
Returns the time spent in Initialize().
virtual int NumApplyInverse() const
Returns the number of calls to ApplyInverse().
virtual int NumCompute() const
Returns the number of calls to Compute().
virtual double ComputeFlops() const
Returns the number of flops in the computation phase.
#define IFPACK_CHK_ERR(ifpack_err)
virtual double InitializeFlops() const
Returns the number of flops in the initialization phase.
int Compute()
Compute IC factor U using the specified graph, diagonal perturbation thresholds and relaxation parame...
int NumMyNonzeros() const
Returns the number of nonzero entries in the local graph.
const Epetra_Comm & Comm() const
Returns the Epetra_BlockMap object associated with the range of this matrix operator.
int NumGlobalNonzeros() const
Returns the number of nonzero entries in the global graph.
double NormInf() const
Returns 0.0 because this class cannot compute Inf-norm.
int NumInitialize_
Contains the number of successful calls to Initialize().
int NumApplyInverse_
Contains the number of successful call to ApplyInverse().