BelosSolver Class Reference

Detailed Description

Belos solver class.

This class warps the Trilinos Belos package

Inheritance diagram for BelosSolver:

Collaboration diagram for BelosSolver:

Public Member Functions
	BelosSolver (const SparseMatrix &A, const int solver=BelosSolvers::BiCGStab)
	Constructor (sparse matrix)
std::string	currentParams () const
	Returns current parameters.
Epetra_Operator *	getPrecOperator () const
	Returns pointer to preconditioner operator.
void	getSolution (gsVector< real_t > &sol, const int rank=0) const
	Returns solution vector.
int	numIterations () const
	Returns number of iterations.
void	set (const std::string &name, const bool &value)
	Sets bool paramters.
void	set (const std::string &name, const double &value)
	Sets double paramters.
void	set (const std::string &name, const int &value)
	Sets parameters.
void	set (const std::string &name, const std::string &value)
	Sets string paramters.
void	setHermitian ()
	Sets Hermitian problem type.
void	setOptions (const gsOptionList &opt)
	Set parameters from option list.
int	setPreconditioner (const std::string &precType, const SparseMatrix &A, const bool &leftprec, const int &OverlapLevel=0)
	OverlapLevel: must be >= 0. If Comm.NumProc() == 1, it is ignored.
const Vector &	solve (const Vector &b)
	Solves problem for the given a right-hand side vector.
std::string	status () const
	Returns status and timing of solver.
std::string	timing () const
	Returns timing of the solver.
std::string	validParams () const
	Returns information about parameters.
	~BelosSolver ()
	Destructor.

Protected Attributes
int	maxIter
	Default maximum number of iterations for all iterative solvers.
double	tolerance
	Default tolerance for all iterative solvers.

Private Member Functions
void	solveProblem ()
	Solves problem.

Member Function Documentation

getPrecOperator()

Epetra_Operator * getPrecOperator

(

)

const

Returns pointer to preconditioner operator.

Returns pointer to internal preconditioner.

set()

void set ( const std::string &  name, const int &  value  )

virtual

Sets parameters.

Sets integer paramters.

Implements AbstractSolver.

setHermitian()

void setHermitian

(

)

Sets Hermitian problem type.

Hermitian problem type used by iterative solver : if matrix is symmetric, specifies it in the linear problem

setOptions()

void setOptions ( const gsOptionList &  opt )

inherited

Set parameters from option list.

Sets parameters from option list.

status()

std::string status ( ) const

virtual

Returns status and timing of solver.

Returns status of the solver.

Implements AbstractSolver.

validParams()

std::string validParams ( ) const

virtual

Returns information about parameters.

Returns valid parameters.

Implements AbstractSolver.