Amesos_Dscpack: An object-oriented wrapper for Dscpack. More...

#include <Amesos_Dscpack.h>

Inheritance diagram for Amesos_Dscpack:

Private Member Functions
const Epetra_Import &	Importer () const

const Epetra_Map &	DscRowMap () const

const Epetra_Map &	DscColMap () const

int	PerformSymbolicFactorization ()
	Performs the symbolic factorization. More...

int	PerformNumericFactorization ()
	Performs the numeric factorization. More...

Private Member Functions inherited from Amesos_Time
	Amesos_Time ()
	Default constructor to create `size` timers. More...

virtual	~Amesos_Time ()
	Default destructor. More...

void	CreateTimer (const Epetra_Comm &Comm, int size=1)
	Initializes the Time object. More...

void	ResetTimer (const int timerID=0)
	Resets the internally stored time object. More...

int	AddTime (const std::string what, int dataID, const int timerID=0)
	Adds to field `what` the time elapsed since last call to ResetTimer(). More...

double	GetTime (const std::string what) const
	Gets the cumulative time using the string. More...

double	GetTime (const int dataID) const
	Gets the cumulative time using the dataID. More...

void	GetTiming (Teuchos::ParameterList &list) const
	Load up the current timing information into the parameter list. More...

Private Member Functions inherited from Amesos_NoCopiable
	Amesos_NoCopiable ()
	Default constructor. More...

	~Amesos_NoCopiable ()
	Default destructor. More...

Private Member Functions inherited from Amesos_Utils
	Amesos_Utils ()
	Default constructor. More...

	~Amesos_Utils ()
	Default destructor. More...

void	ComputeTrueResidual (const Epetra_RowMatrix &Matrix, const Epetra_MultiVector &X, const Epetra_MultiVector &B, const bool UseTranspose, const std::string prefix) const
	Computes the true residual, B - Matrix * X, and prints the results. More...

void	ComputeVectorNorms (const Epetra_MultiVector &X, const Epetra_MultiVector &B, const std::string prefix) const
	Computes the norms of X and B and print the results. More...

void	PrintLine () const
	Prints line on std::cout. More...

void	SetMaxProcesses (int &MaxProcesses, const Epetra_RowMatrix &A)

Private Member Functions inherited from Amesos_Control
	Amesos_Control ()
	Default constructor. More...

	~Amesos_Control ()
	Default destructor. More...

void	SetControlParameters (const Teuchos::ParameterList &ParameterList)

Private Member Functions inherited from Amesos_Status
	Amesos_Status ()
	Default constructor. More...

	~Amesos_Status ()
	Default destructor. More...

void	SetStatusParameters (const Teuchos::ParameterList &ParameterList)

Private Attributes
const Epetra_LinearProblem *	Problem_
	Pointer to the linear problem. More...

Teuchos::RCP < Amesos_Dscpack_Pimpl >	PrivateDscpackData_

bool	FirstCallToSolve_

bool	A_and_LU_built
	Tells us whether to free them. More...

int *	GlobalStructNewColNum

int *	GlobalStructNewNum

int *	GlobalStructOwner

int *	LocalStructOldNum

int	MyDscRank

int	DscNumProcs

int	NumLocalCols

int	NumGlobalCols

int	NumLocalStructs

int	NumLocalNonz

RCP< Epetra_Import >	Importer_

RCP< Epetra_Map >	DscColMap_

RCP< Epetra_Map >	DscRowMap_

int	MaxProcs_

int	MtxRedistTime_

int	MtxConvTime_

int	VecRedistTime_

int	SymFactTime_

int	NumFactTime_

int	SolveTime_

int	OverheadTime_

int	TotalMemory_

Private Attributes inherited from Amesos_Control
double	AddToDiag_
	Add `this` value to the diagonal. More...

bool	refactorize_

double	rcond_threshold_
	If error is greater than `this` value, perform symbolic and numeric factorization with full partial pivoting. More...

int	ScaleMethod_

bool	AddZeroToDiag_
	Adds zero to diagonal of redistributed matrix (some solvers choke on a matrix with a partly empty diag) More...

int	MatrixProperty_
	Set the matrix property. More...

int	MaxProcesses_

bool	Reindex_
	If true, the Amesos class should reindex the matrix to standard indexing (i.e. More...

Private Attributes inherited from Amesos_Status
bool	IsSymbolicFactorizationOK_
	If `true`, SymbolicFactorization() has been successfully called. More...

bool	IsNumericFactorizationOK_
	If `true`, NumericFactorization() has been successfully called. More...

bool	PrintTiming_
	If `true`, prints timing information in the destructor. More...

bool	PrintStatus_
	If `true`, print additional information in the destructor. More...

bool	ComputeVectorNorms_
	If `true`, prints the norms of X and B in Solve(). More...

bool	ComputeTrueResidual_
	If `true`, computes the true residual in Solve(). More...

int	verbose_
	Toggles the output level. More...

int	debug_
	Sets the level of debug_ output. More...

int	NumSymbolicFact_
	Number of symbolic factorization phases. More...

int	NumNumericFact_
	Number of numeric factorization phases. More...

int	NumSolve_
	Number of solves. More...

double	Threshold_

int	MyPID_

int	NumProcs_

	Amesos_Dscpack (const Epetra_LinearProblem &LinearProblem)
	Amesos_Dscpack Constructor. More...

	~Amesos_Dscpack (void)
	Amesos_Dscpack Destructor. More...

int	SymbolicFactorization ()
	Performs SymbolicFactorization on the matrix A. More...

int	NumericFactorization ()
	Performs NumericFactorization on the matrix A. More...

int	Solve ()
	Solves A X = B (or A^T x = B) More...

const Epetra_LinearProblem *	GetProblem () const
	Returns the Epetra_LinearProblem. More...

bool	MatrixShapeOK () const
	Returns true if DSCPACK can handle this matrix shape. More...

int	SetUseTranspose (bool UseTranspose)
	If set true, X will be set to the solution of A^T X = B (not A X = B) More...

bool	UseTranspose () const
	Returns the current UseTranspose setting. More...

const Epetra_Comm &	Comm () const
	Returns a pointer to the Epetra_Comm communicator associated with this operator. More...

int	SetParameters (Teuchos::ParameterList &ParameterList)
	Updates internal variables. More...

int	NumSymbolicFact () const
	Returns the number of symbolic factorizations performed by this object. More...

int	NumNumericFact () const
	Returns the number of numeric factorizations performed by this object. More...

int	NumSolve () const
	Returns the number of solves performed by this object. More...

void	PrintTiming () const
	Prints timing information. More...

void	PrintStatus () const
	Prints information about the factorization and solution phases. More...

void	GetTiming (Teuchos::ParameterList &TimingParameterList) const
	Extracts timing information from the current solver and places it in the parameter list. More...

Additional Inherited Members
Public Member Functions inherited from Amesos_BaseSolver
virtual	~Amesos_BaseSolver ()
	Destructor. More...

virtual void	setParameterList (Teuchos::RCP< Teuchos::ParameterList > const &paramList)
	Redefined from Teuchos::ParameterListAcceptor (Does Not Work) More...

virtual Teuchos::RCP < Teuchos::ParameterList >	getNonconstParameterList ()
	This is an empty stub. More...

virtual Teuchos::RCP < Teuchos::ParameterList >	unsetParameterList ()
	This is an empty stub. More...

Public Member Functions inherited from Teuchos::ParameterListAcceptor
virtual RCP< const ParameterList >	getParameterList () const

virtual RCP< const ParameterList >	getValidParameters () const

Detailed Description

Amesos_Dscpack: An object-oriented wrapper for Dscpack.

Amesos_Dscpack will solve a linear systems of equations: A X = B using Epetra objects and the Dscpack solver library, where A is an Epetra_RowMatrix and X and B are Epetra_MultiVector objects.

Definition at line 66 of file Amesos_Dscpack.h.

Constructor & Destructor Documentation

Amesos_Dscpack::Amesos_Dscpack ( const Epetra_LinearProblem & LinearProblem )

Amesos_Dscpack Constructor.

Creates an Amesos_Dscpack instance, using an Epetra_LinearProblem, passing in an already-defined Epetra_LinearProblem object.

Note: The operator in LinearProblem must be an Epetra_RowMatrix.

Definition at line 48 of file Amesos_Dscpack.cpp.

Amesos_Dscpack::~Amesos_Dscpack ( void )

Amesos_Dscpack Destructor.

Completely deletes an Amesos_Dscpack object.

Definition at line 69 of file Amesos_Dscpack.cpp.

Member Function Documentation

int Amesos_Dscpack::SymbolicFactorization ( )

virtual

Performs SymbolicFactorization on the matrix A.

In addition to performing symbolic factorization on the matrix A, the call to SymbolicFactorization() implies that no change will be made to the non-zero structure of the underlying matrix without a subsequent call to SymbolicFactorization().

Preconditions:

GetProblem().GetOperator() != 0 (return -1)
MatrixShapeOk(GetProblem().GetOperator()) == true (return -6)

Postconditions:

Symbolic Factorization will be performed (or marked to be performed) allowing NumericFactorization() and Solve() to be called.

Returns: Integer error code, set to 0 if successful.

Implements Amesos_BaseSolver.

Definition at line 429 of file Amesos_Dscpack.cpp.

int Amesos_Dscpack::NumericFactorization ( )

virtual

Performs NumericFactorization on the matrix A.

In addition to performing numeric factorization on the matrix A, the call to NumericFactorization() implies that no change will be made to the underlying matrix without a subsequent call to NumericFactorization().

Preconditions:

GetProblem().GetOperator() != 0 (return -1)
MatrixShapeOk(GetProblem().GetOperator()) == true (return -6)
The non-zero structure of the matrix should not have changed since the last call to SymbolicFactorization(). (return -2 if the number of non-zeros changes) Other changes can have arbitrary consequences.
The distribution of the matrix should not have changed since the last call to SymbolicFactorization()
The matrix should be indexed from 0 to n-1, unless the parameter "Reindex" was set to "true" prior to the call to SymbolicFactorization(). (return -3 - if caught)
The paremeter "Reindex" should not be set to "true" except on CrsMatrices. (return -4)
The paremeter "Reindex" should not be set to "true" unless Amesos was built with EpetraExt, i.e. with –enable-epetraext on the configure line. (return -4)
Internal errors retur -5.

Postconditions:

Numeric Factorization will be performed (or marked to be performed) allowing Solve() to be performed correctly despite a potential change in in the matrix values (though not in the non-zero structure).

Returns: Integer error code, set to 0 if successful.

Implements Amesos_BaseSolver.

Definition at line 445 of file Amesos_Dscpack.cpp.

int Amesos_Dscpack::Solve ( )

virtual

Solves A X = B (or A^T x = B)

Preconditions:

GetProblem().GetOperator() != 0 (return -1)
MatrixShapeOk(GetProblem().GetOperator()) == true (return -6)
GetProblem()->CheckInput (see Epetra_LinearProblem::CheckInput() for return values)
The non-zero structure of the matrix should not have changed since the last call to SymbolicFactorization().
The distribution of the matrix should not have changed since the last call to SymbolicFactorization()
The matrix should not have changed since the last call to NumericFactorization().

Postconditions:

X will be set such that A X = B (or A^T X = B), within the limits of the accuracy of the underlying solver.

Returns: Integer error code, set to 0 if successful.

Implements Amesos_BaseSolver.

Definition at line 461 of file Amesos_Dscpack.cpp.

const Epetra_LinearProblem* Amesos_Dscpack::GetProblem ( ) const

inlinevirtual

Returns the Epetra_LinearProblem.

Warning! Do not call return->SetOperator(...) to attempt to change the Epetra_Operator object (even if the new matrix has the same structure). This new operator matrix will be ignored!

Implements Amesos_BaseSolver.

Definition at line 103 of file Amesos_Dscpack.h.

bool Amesos_Dscpack::MatrixShapeOK ( ) const

virtual

Returns true if DSCPACK can handle this matrix shape.

Returns true if the matrix shape is one that DSCPACK can handle. DSCPACK only works with symetric matrices.

Implements Amesos_BaseSolver.

Definition at line 415 of file Amesos_Dscpack.cpp.

int Amesos_Dscpack::SetUseTranspose ( bool UseTranspose )

inlinevirtual

If set true, X will be set to the solution of A^T X = B (not A X = B)

If the implementation of this interface does not support transpose use, this method should return a value of -1.

Preconditions:

SetUseTranspose() should be called prior to the call to SymbolicFactorization() If NumericFactorization() or Solve() is called after SetUseTranspose() without an intervening call to SymbolicFactorization() the result is implementation dependent.

Postconditions:

The next factorization and solve will be performed with the new value of UseTranspose.

Parameters

UseTranspose – (In) If true, solve A^T X = B, otherwise solve A X = B.

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

Implements Amesos_BaseSolver.

Definition at line 111 of file Amesos_Dscpack.h.

bool Amesos_Dscpack::UseTranspose ( ) const

inlinevirtual

Returns the current UseTranspose setting.

Implements Amesos_BaseSolver.

Definition at line 116 of file Amesos_Dscpack.h.

const Epetra_Comm& Amesos_Dscpack::Comm ( ) const

inlinevirtual

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

Implements Amesos_BaseSolver.

Definition at line 121 of file Amesos_Dscpack.h.

int Amesos_Dscpack::SetParameters ( Teuchos::ParameterList & ParameterList )

virtual

Updates internal variables.

  <br \>Preconditions:<ul>
  <li>None.</li>
  </ul>

  <br \>Postconditions:<ul> 
  <li>Internal variables controlling the factorization and solve will
  be updated and take effect on all subseuent calls to NumericFactorization() 
  and Solve().</li>
  <li>All parameters whose value are to differ from the default values must

be included in ParameterList. Parameters not specified in ParameterList revert to their default values.

Returns: Integer error code, set to 0 if successful.

Implements Amesos_BaseSolver.

Definition at line 83 of file Amesos_Dscpack.cpp.

int Amesos_Dscpack::NumSymbolicFact ( ) const

inlinevirtual

Returns the number of symbolic factorizations performed by this object.

Implements Amesos_BaseSolver.

Definition at line 126 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumNumericFact ( ) const

inlinevirtual

Returns the number of numeric factorizations performed by this object.

Implements Amesos_BaseSolver.

Definition at line 129 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumSolve ( ) const

inlinevirtual

Returns the number of solves performed by this object.

Implements Amesos_BaseSolver.

Definition at line 132 of file Amesos_Dscpack.h.

void Amesos_Dscpack::PrintTiming ( ) const

virtual

Prints timing information.

Implements Amesos_BaseSolver.

Definition at line 583 of file Amesos_Dscpack.cpp.

void Amesos_Dscpack::PrintStatus ( ) const

virtual

Prints information about the factorization and solution phases.

Implements Amesos_BaseSolver.

Definition at line 550 of file Amesos_Dscpack.cpp.

void Amesos_Dscpack::GetTiming ( Teuchos::ParameterList & TimingParameterList ) const

inlinevirtual

Extracts timing information from the current solver and places it in the parameter list.

Reimplemented from Amesos_BaseSolver.

Definition at line 141 of file Amesos_Dscpack.h.

const Epetra_Import& Amesos_Dscpack::Importer ( ) const

inlineprivate

Definition at line 147 of file Amesos_Dscpack.h.

const Epetra_Map& Amesos_Dscpack::DscRowMap ( ) const

inlineprivate

Definition at line 152 of file Amesos_Dscpack.h.

const Epetra_Map& Amesos_Dscpack::DscColMap ( ) const

inlineprivate

Definition at line 157 of file Amesos_Dscpack.h.

int Amesos_Dscpack::PerformSymbolicFactorization ( )

private

Performs the symbolic factorization.

Definition at line 108 of file Amesos_Dscpack.cpp.

int Amesos_Dscpack::PerformNumericFactorization ( )

private

Performs the numeric factorization.

Definition at line 294 of file Amesos_Dscpack.cpp.

Member Data Documentation

const Epetra_LinearProblem* Amesos_Dscpack::Problem_

private

Pointer to the linear problem.

Definition at line 169 of file Amesos_Dscpack.h.

Teuchos::RCP<Amesos_Dscpack_Pimpl> Amesos_Dscpack::PrivateDscpackData_

private

Definition at line 171 of file Amesos_Dscpack.h.

bool Amesos_Dscpack::FirstCallToSolve_

private

Definition at line 173 of file Amesos_Dscpack.h.

bool Amesos_Dscpack::A_and_LU_built

private

Tells us whether to free them.

Definition at line 175 of file Amesos_Dscpack.h.

int* Amesos_Dscpack::GlobalStructNewColNum

private

Definition at line 176 of file Amesos_Dscpack.h.

int* Amesos_Dscpack::GlobalStructNewNum

private

Definition at line 177 of file Amesos_Dscpack.h.

int* Amesos_Dscpack::GlobalStructOwner

private

Definition at line 178 of file Amesos_Dscpack.h.

int* Amesos_Dscpack::LocalStructOldNum

private

Definition at line 179 of file Amesos_Dscpack.h.

int Amesos_Dscpack::MyDscRank

private

Definition at line 181 of file Amesos_Dscpack.h.

int Amesos_Dscpack::DscNumProcs

private

Definition at line 182 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumLocalCols

private

Definition at line 183 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumGlobalCols

private

Definition at line 184 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumLocalStructs

private

Definition at line 185 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumLocalNonz

private

Definition at line 186 of file Amesos_Dscpack.h.

RCP<Epetra_Import> Amesos_Dscpack::Importer_

private

Definition at line 188 of file Amesos_Dscpack.h.

RCP<Epetra_Map> Amesos_Dscpack::DscColMap_

private

Definition at line 189 of file Amesos_Dscpack.h.

RCP<Epetra_Map> Amesos_Dscpack::DscRowMap_

private

Definition at line 190 of file Amesos_Dscpack.h.

int Amesos_Dscpack::MaxProcs_

private

Definition at line 192 of file Amesos_Dscpack.h.

int Amesos_Dscpack::MtxRedistTime_

private

Definition at line 194 of file Amesos_Dscpack.h.

int Amesos_Dscpack::MtxConvTime_

private

Definition at line 194 of file Amesos_Dscpack.h.

int Amesos_Dscpack::VecRedistTime_

private

Definition at line 194 of file Amesos_Dscpack.h.

int Amesos_Dscpack::SymFactTime_

private

Definition at line 195 of file Amesos_Dscpack.h.

int Amesos_Dscpack::NumFactTime_

private

Definition at line 195 of file Amesos_Dscpack.h.

int Amesos_Dscpack::SolveTime_

private

Definition at line 195 of file Amesos_Dscpack.h.

int Amesos_Dscpack::OverheadTime_

private

Definition at line 195 of file Amesos_Dscpack.h.

int Amesos_Dscpack::TotalMemory_

private

Definition at line 198 of file Amesos_Dscpack.h.

The documentation for this class was generated from the following files:

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation