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Ifpack_PointRelaxation Class Reference

Ifpack_PointRelaxation: a class to define point relaxation preconditioners of for Epetra_RowMatrix's. More...

#include <Ifpack_PointRelaxation.h>

Inheritance diagram for Ifpack_PointRelaxation:
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Public Member Functions

virtual int SetUseTranspose (bool UseTranspose_in)
 

Private Member Functions

virtual void SetLabel ()
 Sets the label. More...
 
 Ifpack_PointRelaxation (const Ifpack_PointRelaxation &)
 Copy constructor (PRIVATE, should not be used) More...
 
Ifpack_PointRelaxation & operator= (const Ifpack_PointRelaxation &)
 operator = (PRIVATE, should not be used) More...
 
 Ifpack_PointRelaxation (const Epetra_RowMatrix *Matrix)
 Ifpack_PointRelaxation constructor with given Epetra_RowMatrix. More...
 
virtual ~Ifpack_PointRelaxation ()
 Destructor. More...
 
virtual int Apply (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Applies the matrix to an Epetra_MultiVector. More...
 
virtual int ApplyInverse (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Applies the preconditioner to X, returns the result in Y. More...
 
virtual double NormInf () const
 Returns the infinity norm of the global matrix (not implemented) More...
 
virtual const char * Label () const
 
virtual bool UseTranspose () const
 Returns the current UseTranspose setting. More...
 
virtual bool HasNormInf () const
 Returns true if the this object can provide an approximate Inf-norm, false otherwise. More...
 
virtual const Epetra_Comm & Comm () const
 Returns a pointer to the Epetra_Comm communicator associated with this operator. More...
 
virtual const Epetra_Map & OperatorDomainMap () const
 Returns the Epetra_Map object associated with the domain of this operator. More...
 
virtual const Epetra_Map & OperatorRangeMap () const
 Returns the Epetra_Map object associated with the range of this operator. More...
 
virtual int Initialize ()
 Computes all it is necessary to initialize the preconditioner. More...
 
virtual bool IsInitialized () const
 Returns true if the preconditioner has been successfully initialized, false otherwise. More...
 
virtual bool IsComputed () const
 Returns true if the preconditioner has been successfully computed. More...
 
virtual int Compute ()
 Computes the preconditioners. More...
 
virtual const Epetra_RowMatrix & Matrix () const
 Returns a pointer to the matrix to be preconditioned. More...
 
virtual double Condest (const Ifpack_CondestType CT=Ifpack_Cheap, const int MaxIters=1550, const double Tol=1e-9, Epetra_RowMatrix *Matrix=0)
 Computes the condition number estimates and returns the value. More...
 
virtual double Condest () const
 Returns the condition number estimate, or -1.0 if not computed. More...
 
virtual int SetParameters (Teuchos::ParameterList &List)
 Sets all the parameters for the preconditioner. More...
 
virtual std::ostream & Print (std::ostream &os) const
 Prints object to an output stream. More...
 
virtual int NumInitialize () const
 Returns the number of calls to Initialize(). More...
 
virtual int NumCompute () const
 Returns the number of calls to Compute(). More...
 
virtual int NumApplyInverse () const
 Returns the number of calls to ApplyInverse(). More...
 
virtual double InitializeTime () const
 Returns the time spent in Initialize(). More...
 
virtual double ComputeTime () const
 Returns the time spent in Compute(). More...
 
virtual double ApplyInverseTime () const
 Returns the time spent in ApplyInverse(). More...
 
virtual double InitializeFlops () const
 Returns the number of flops in the initialization phase. More...
 
virtual double ComputeFlops () const
 Returns the number of flops in the computation phase. More...
 
virtual double ApplyInverseFlops () const
 Returns the number of flops for the application of the preconditioner. More...
 
virtual int ApplyInverseJacobi (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Applies the Jacobi preconditioner to X, returns the result in Y. More...
 
virtual int ApplyInverseGS (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Applies the Gauss-Seidel preconditioner to X, returns the result in Y. More...
 
virtual int ApplyInverseGS_RowMatrix (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseGS_CrsMatrix (const Epetra_CrsMatrix *A, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseGS_FastCrsMatrix (const Epetra_CrsMatrix *A, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseGS_LocalFastCrsMatrix (const Epetra_CrsMatrix *A, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseSGS (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Applies the symmetric Gauss-Seidel preconditioner to X, returns the result in Y. More...
 
virtual int ApplyInverseSGS_RowMatrix (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseSGS_CrsMatrix (const Epetra_CrsMatrix *A, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseSGS_FastCrsMatrix (const Epetra_CrsMatrix *A, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
virtual int ApplyInverseSGS_LocalFastCrsMatrix (const Epetra_CrsMatrix *A, const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 
bool IsInitialized_
 If true, the preconditioner has been computed successfully. More...
 
bool IsComputed_
 If true, the preconditioner has been computed successfully. More...
 
int NumInitialize_
 Contains the number of successful calls to Initialize(). More...
 
int NumCompute_
 Contains the number of successful call to Compute(). More...
 
int NumApplyInverse_
 Contains the number of successful call to ApplyInverse(). More...
 
double InitializeTime_
 Contains the time for all successful calls to Initialize(). More...
 
double ComputeTime_
 Contains the time for all successful calls to Compute(). More...
 
double ApplyInverseTime_
 Contains the time for all successful calls to ApplyInverse(). More...
 
double ComputeFlops_
 Contains the number of flops for Compute(). More...
 
double ApplyInverseFlops_
 Contain sthe number of flops for ApplyInverse(). More...
 
int NumSweeps_
 Number of application of the preconditioner (should be greater than 0). More...
 
double DampingFactor_
 Damping factor. More...
 
bool UseTranspose_
 If true, use the tranpose of Matrix_. More...
 
double Condest_
 Contains the estimated condition number. More...
 
std::string Label_
 Contains the label of this object. More...
 
int PrecType_
 
double MinDiagonalValue_
 
int NumMyRows_
 Number of local rows. More...
 
int NumMyNonzeros_
 Number of local nonzeros. More...
 
long long NumGlobalRows_
 Number of global rows. More...
 
long long NumGlobalNonzeros_
 Number of global nonzeros. More...
 
Teuchos::RefCountPtr< const
Epetra_RowMatrix > 		Matrix_
 Pointers to the matrix to be preconditioned. More...
 
Teuchos::RefCountPtr
< Epetra_Import > 		Importer_
 Importer for parallel GS and SGS. More...
 
Teuchos::RefCountPtr
< Epetra_Vector > 		Diagonal_
 Contains the diagonal elements of Matrix. More...
 
Teuchos::RefCountPtr< Epetra_Time > Time_
 Time object to track timing. More...
 
bool IsParallel_
 If true, more than 1 processor is currently used. More...
 
bool ZeroStartingSolution_
 If true, the starting solution is always the zero vector. More...
 
bool DoBackwardGS_
 Backward-Mode Gauss Seidel. More...
 
bool DoL1Method_
 Do L1 Jacobi/GS/SGS. More...
 
double L1Eta_
 Eta parameter for modified L1 method. More...
 
int NumLocalSmoothingIndices_
 Number of (local) unknowns for local smoothing. More...
 
int * LocalSmoothingIndices_
 List of (local) unknowns for local smoothing (if any) More...
 

Detailed Description

Ifpack_PointRelaxation: a class to define point relaxation preconditioners of for Epetra_RowMatrix's.

The Ifpack_PointRelaxation class enables the construction of point relaxation preconditioners of an Epetra_RowMatrix. Ifpack_PointRelaxation is derived from the Ifpack_Preconditioner class, which is itself derived from Epetra_Operator. Therefore this object can be used as preconditioner everywhere an ApplyInverse() method is required in the preconditioning step.

This class enables the construction of the following simple preconditioners:

We now briefly describe the main features of the above preconditioners. Consider a linear system of type

\[ A x = b, \]

where $ A$ is a square, real matrix, and $ x, b$ are two real vectors. We begin with the decomposition

\[ A = D - E - F \]

where $ D$ is the diagonal of A, $ -E$ is the strict lower part, and $ -F$ is the strict upper part. It is assumed that the diagonal entries of $ A$ are different from zero.

Given an starting solution $ x_0$, an iteration of the (damped) Jacobi method can be written in matrix form as follows:

\[ x_{k+1} = \omega D^{-1}(E + F) x_k + D_{-1}b, \]

for $ k < k_{max}$, and $\omega $ a damping parameter.

Using Ifpack_Jacobi, the user can apply the specified number of sweeps ( $ k_{max}$), and the damping parameter. If only one sweep is used, then the class simply applies the inverse of the diagonal of A to the input vector.

Given an starting solution $ x_0$, an iteration of the (damped) GaussSeidel method can be written in matrix form as follows:

\[ (D - E) x_{k+1} = \omega F x_k + b, \]

for $ k < k_{max}$, and $\omega $ a damping parameter. Equivalently, the Gauss-Seidel preconditioner can be defined as

\[ P_{GS}^{-1} = (D - E)^{-1}. \]

Clearly, the role of E and F can be interchanged. However, Ifpack_GaussSeidel does not consider backward Gauss-Seidel methods.

For a list of supported parameters, please refer to page ifp_params.

The complete list of supported parameters is reported in page ifp_params. For a presentation of basic relaxation schemes, please refer to page Ifpack_PointRelaxation.

Author
Marzio Sala, SNL 9214.
Date
Last modified on 22-Jan-05.

Definition at line 130 of file Ifpack_PointRelaxation.h.

Constructor & Destructor Documentation

Ifpack_PointRelaxation::Ifpack_PointRelaxation ( const Epetra_RowMatrix *  Matrix)

Ifpack_PointRelaxation constructor with given Epetra_RowMatrix.

Creates an instance of Ifpack_PointRelaxation class.

Parameters
Matrix- (In) Pointer to matrix to precondition.

Definition at line 63 of file Ifpack_PointRelaxation.cpp.

virtual Ifpack_PointRelaxation::~Ifpack_PointRelaxation ( )
inlinevirtual

Destructor.

Definition at line 143 of file Ifpack_PointRelaxation.h.

Ifpack_PointRelaxation::Ifpack_PointRelaxation ( const Ifpack_PointRelaxation &  )
inlineprivate

Copy constructor (PRIVATE, should not be used)

Definition at line 389 of file Ifpack_PointRelaxation.h.

Member Function Documentation

virtual int Ifpack_PointRelaxation::SetUseTranspose ( bool  UseTranspose_in)
inlinevirtual

This flag can be used to apply the preconditioner to the transpose of the input operator.

Returns
Integer error code, set to 0 if successful. Set to -1 if this implementation does not support transpose.

Implements Epetra_Operator.

Definition at line 153 of file Ifpack_PointRelaxation.h.

virtual int Ifpack_PointRelaxation::Apply ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
inlinevirtual

Applies the matrix to an Epetra_MultiVector.

Parameters
X- (In) A Epetra_MultiVector of dimension NumVectors to multiply with matrix.
Y- (Out) A Epetra_MultiVector of dimension NumVectors containing the result.
Returns
Integer error code, set to 0 if successful.

Implements Epetra_Operator.

Definition at line 172 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::ApplyInverse ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
virtual

Applies the preconditioner to X, returns the result in Y.

Parameters
X- (In) A Epetra_MultiVector of dimension NumVectors to be preconditioned.
Y- (InOut) A Epetra_MultiVector of dimension NumVectors containing result.
Returns
Integer error code, set to 0 if successful.
Warning
This routine is NOT AztecOO complaint.

Implements Ifpack_Preconditioner.

Definition at line 414 of file Ifpack_PointRelaxation.cpp.

virtual double Ifpack_PointRelaxation::NormInf ( ) const
inlinevirtual

Returns the infinity norm of the global matrix (not implemented)

Implements Epetra_Operator.

Definition at line 198 of file Ifpack_PointRelaxation.h.

virtual const char* Ifpack_PointRelaxation::Label ( ) const
inlinevirtual

Implements Epetra_Operator.

Definition at line 206 of file Ifpack_PointRelaxation.h.

virtual bool Ifpack_PointRelaxation::UseTranspose ( ) const
inlinevirtual

Returns the current UseTranspose setting.

Implements Epetra_Operator.

Definition at line 212 of file Ifpack_PointRelaxation.h.

virtual bool Ifpack_PointRelaxation::HasNormInf ( ) const
inlinevirtual

Returns true if the this object can provide an approximate Inf-norm, false otherwise.

Implements Epetra_Operator.

Definition at line 218 of file Ifpack_PointRelaxation.h.

const Epetra_Comm & Ifpack_PointRelaxation::Comm ( ) const
virtual

Returns a pointer to the Epetra_Comm communicator associated with this operator.

Implements Epetra_Operator.

Definition at line 153 of file Ifpack_PointRelaxation.cpp.

const Epetra_Map & Ifpack_PointRelaxation::OperatorDomainMap ( ) const
virtual

Returns the Epetra_Map object associated with the domain of this operator.

Implements Epetra_Operator.

Definition at line 159 of file Ifpack_PointRelaxation.cpp.

const Epetra_Map & Ifpack_PointRelaxation::OperatorRangeMap ( ) const
virtual

Returns the Epetra_Map object associated with the range of this operator.

Implements Epetra_Operator.

Definition at line 165 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::Initialize ( )
virtual

Computes all it is necessary to initialize the preconditioner.

Implements Ifpack_Preconditioner.

Definition at line 171 of file Ifpack_PointRelaxation.cpp.

virtual bool Ifpack_PointRelaxation::IsInitialized ( ) const
inlinevirtual

Returns true if the preconditioner has been successfully initialized, false otherwise.

Implements Ifpack_Preconditioner.

Definition at line 234 of file Ifpack_PointRelaxation.h.

virtual bool Ifpack_PointRelaxation::IsComputed ( ) const
inlinevirtual

Returns true if the preconditioner has been successfully computed.

Implements Ifpack_Preconditioner.

Definition at line 240 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::Compute ( )
virtual

Computes the preconditioners.

Implements Ifpack_Preconditioner.

Definition at line 201 of file Ifpack_PointRelaxation.cpp.

virtual const Epetra_RowMatrix& Ifpack_PointRelaxation::Matrix ( ) const
inlinevirtual

Returns a pointer to the matrix to be preconditioned.

Implements Ifpack_Preconditioner.

Definition at line 252 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::Condest ( const Ifpack_CondestType  CT = Ifpack_Cheap,
const int  MaxIters = 1550,
const double  Tol = 1e-9,
Epetra_RowMatrix *  Matrix = 0 
)
virtual

Computes the condition number estimates and returns the value.

Implements Ifpack_Preconditioner.

Definition at line 369 of file Ifpack_PointRelaxation.cpp.

virtual double Ifpack_PointRelaxation::Condest ( ) const
inlinevirtual

Returns the condition number estimate, or -1.0 if not computed.

Implements Ifpack_Preconditioner.

Definition at line 264 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::SetParameters ( Teuchos::ParameterList &  List)
virtual

Sets all the parameters for the preconditioner.

Implements Ifpack_Preconditioner.

Definition at line 97 of file Ifpack_PointRelaxation.cpp.

std::ostream & Ifpack_PointRelaxation::Print ( std::ostream &  os) const
virtual

Prints object to an output stream.

Implements Ifpack_Preconditioner.

Definition at line 302 of file Ifpack_PointRelaxation.cpp.

virtual int Ifpack_PointRelaxation::NumInitialize ( ) const
inlinevirtual

Returns the number of calls to Initialize().

Implements Ifpack_Preconditioner.

Definition at line 280 of file Ifpack_PointRelaxation.h.

virtual int Ifpack_PointRelaxation::NumCompute ( ) const
inlinevirtual

Returns the number of calls to Compute().

Implements Ifpack_Preconditioner.

Definition at line 286 of file Ifpack_PointRelaxation.h.

virtual int Ifpack_PointRelaxation::NumApplyInverse ( ) const
inlinevirtual

Returns the number of calls to ApplyInverse().

Implements Ifpack_Preconditioner.

Definition at line 292 of file Ifpack_PointRelaxation.h.

virtual double Ifpack_PointRelaxation::InitializeTime ( ) const
inlinevirtual

Returns the time spent in Initialize().

Implements Ifpack_Preconditioner.

Definition at line 298 of file Ifpack_PointRelaxation.h.

virtual double Ifpack_PointRelaxation::ComputeTime ( ) const
inlinevirtual

Returns the time spent in Compute().

Implements Ifpack_Preconditioner.

Definition at line 304 of file Ifpack_PointRelaxation.h.

virtual double Ifpack_PointRelaxation::ApplyInverseTime ( ) const
inlinevirtual

Returns the time spent in ApplyInverse().

Implements Ifpack_Preconditioner.

Definition at line 310 of file Ifpack_PointRelaxation.h.

virtual double Ifpack_PointRelaxation::InitializeFlops ( ) const
inlinevirtual

Returns the number of flops in the initialization phase.

Implements Ifpack_Preconditioner.

Definition at line 316 of file Ifpack_PointRelaxation.h.

virtual double Ifpack_PointRelaxation::ComputeFlops ( ) const
inlinevirtual

Returns the number of flops in the computation phase.

Implements Ifpack_Preconditioner.

Definition at line 322 of file Ifpack_PointRelaxation.h.

virtual double Ifpack_PointRelaxation::ApplyInverseFlops ( ) const
inlinevirtual

Returns the number of flops for the application of the preconditioner.

Implements Ifpack_Preconditioner.

Definition at line 328 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::ApplyInverseJacobi ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Applies the Jacobi preconditioner to X, returns the result in Y.

Definition at line 457 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseGS ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Applies the Gauss-Seidel preconditioner to X, returns the result in Y.

Definition at line 499 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseGS_RowMatrix ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 524 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseGS_CrsMatrix ( const Epetra_CrsMatrix *  A,
const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 669 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseGS_FastCrsMatrix ( const Epetra_CrsMatrix *  A,
const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 765 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseGS_LocalFastCrsMatrix ( const Epetra_CrsMatrix *  A,
const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 855 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseSGS ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Applies the symmetric Gauss-Seidel preconditioner to X, returns the result in Y.

Definition at line 946 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseSGS_RowMatrix ( const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 969 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseSGS_CrsMatrix ( const Epetra_CrsMatrix *  A,
const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 1058 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseSGS_FastCrsMatrix ( const Epetra_CrsMatrix *  A,
const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 1146 of file Ifpack_PointRelaxation.cpp.

int Ifpack_PointRelaxation::ApplyInverseSGS_LocalFastCrsMatrix ( const Epetra_CrsMatrix *  A,
const Epetra_MultiVector &  X,
Epetra_MultiVector &  Y 
) const
privatevirtual

Definition at line 1234 of file Ifpack_PointRelaxation.cpp.

void Ifpack_PointRelaxation::SetLabel ( )
privatevirtual

Sets the label.

Definition at line 384 of file Ifpack_PointRelaxation.cpp.

Ifpack_PointRelaxation& Ifpack_PointRelaxation::operator= ( const Ifpack_PointRelaxation &  )
inlineprivate

operator = (PRIVATE, should not be used)

Definition at line 393 of file Ifpack_PointRelaxation.h.

Member Data Documentation

bool Ifpack_PointRelaxation::IsInitialized_
private

If true, the preconditioner has been computed successfully.

Definition at line 400 of file Ifpack_PointRelaxation.h.

bool Ifpack_PointRelaxation::IsComputed_
private

If true, the preconditioner has been computed successfully.

Definition at line 402 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumInitialize_
private

Contains the number of successful calls to Initialize().

Definition at line 404 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumCompute_
private

Contains the number of successful call to Compute().

Definition at line 406 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumApplyInverse_
mutableprivate

Contains the number of successful call to ApplyInverse().

Definition at line 408 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::InitializeTime_
private

Contains the time for all successful calls to Initialize().

Definition at line 410 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::ComputeTime_
private

Contains the time for all successful calls to Compute().

Definition at line 412 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::ApplyInverseTime_
mutableprivate

Contains the time for all successful calls to ApplyInverse().

Definition at line 414 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::ComputeFlops_
private

Contains the number of flops for Compute().

Definition at line 416 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::ApplyInverseFlops_
mutableprivate

Contain sthe number of flops for ApplyInverse().

Definition at line 418 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumSweeps_
private

Number of application of the preconditioner (should be greater than 0).

Definition at line 423 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::DampingFactor_
private

Damping factor.

Definition at line 425 of file Ifpack_PointRelaxation.h.

bool Ifpack_PointRelaxation::UseTranspose_
private

If true, use the tranpose of Matrix_.

Definition at line 427 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::Condest_
private

Contains the estimated condition number.

Definition at line 429 of file Ifpack_PointRelaxation.h.

std::string Ifpack_PointRelaxation::Label_
private

Contains the label of this object.

Definition at line 437 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::PrecType_
private

Definition at line 438 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::MinDiagonalValue_
private

Definition at line 439 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumMyRows_
private

Number of local rows.

Definition at line 444 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumMyNonzeros_
private

Number of local nonzeros.

Definition at line 446 of file Ifpack_PointRelaxation.h.

long long Ifpack_PointRelaxation::NumGlobalRows_
private

Number of global rows.

Definition at line 448 of file Ifpack_PointRelaxation.h.

long long Ifpack_PointRelaxation::NumGlobalNonzeros_
private

Number of global nonzeros.

Definition at line 450 of file Ifpack_PointRelaxation.h.

Teuchos::RefCountPtr<const Epetra_RowMatrix> Ifpack_PointRelaxation::Matrix_
private

Pointers to the matrix to be preconditioned.

Definition at line 452 of file Ifpack_PointRelaxation.h.

Teuchos::RefCountPtr<Epetra_Import> Ifpack_PointRelaxation::Importer_
private

Importer for parallel GS and SGS.

Definition at line 454 of file Ifpack_PointRelaxation.h.

Teuchos::RefCountPtr<Epetra_Vector> Ifpack_PointRelaxation::Diagonal_
mutableprivate

Contains the diagonal elements of Matrix.

Definition at line 456 of file Ifpack_PointRelaxation.h.

Teuchos::RefCountPtr<Epetra_Time> Ifpack_PointRelaxation::Time_
private

Time object to track timing.

Definition at line 458 of file Ifpack_PointRelaxation.h.

bool Ifpack_PointRelaxation::IsParallel_
private

If true, more than 1 processor is currently used.

Definition at line 460 of file Ifpack_PointRelaxation.h.

bool Ifpack_PointRelaxation::ZeroStartingSolution_
private

If true, the starting solution is always the zero vector.

Definition at line 462 of file Ifpack_PointRelaxation.h.

bool Ifpack_PointRelaxation::DoBackwardGS_
private

Backward-Mode Gauss Seidel.

Definition at line 464 of file Ifpack_PointRelaxation.h.

bool Ifpack_PointRelaxation::DoL1Method_
private

Do L1 Jacobi/GS/SGS.

Definition at line 466 of file Ifpack_PointRelaxation.h.

double Ifpack_PointRelaxation::L1Eta_
private

Eta parameter for modified L1 method.

Definition at line 468 of file Ifpack_PointRelaxation.h.

int Ifpack_PointRelaxation::NumLocalSmoothingIndices_
private

Number of (local) unknowns for local smoothing.

Definition at line 471 of file Ifpack_PointRelaxation.h.

int* Ifpack_PointRelaxation::LocalSmoothingIndices_
private

List of (local) unknowns for local smoothing (if any)

Definition at line 473 of file Ifpack_PointRelaxation.h.

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