Opm::LinearSolverIstl Class Reference

Concrete class encapsulating some dune-istl linear solvers. More...

#include <LinearSolverIstl.hpp>

Inheritance diagram for Opm::LinearSolverIstl:

Public Member Functions
	LinearSolverIstl ()
	LinearSolverIstl (const parameter::ParameterGroup &param)
virtual	~LinearSolverIstl ()
	Destructor. More...
virtual LinearSolverReport	solve (const int size, const int nonzeros, const int *ia, const int *ja, const double *sa, const double *rhs, double *solution, const boost::any &comm=boost::any()) const
virtual void	setTolerance (const double tol)
virtual double	getTolerance () const
LinearSolverReport	solve (const CSRMatrix *A, const double *rhs, double *solution) const

Detailed Description

Concrete class encapsulating some dune-istl linear solvers.

Constructor & Destructor Documentation

Opm::LinearSolverIstl::LinearSolverIstl

(

)

Default constructor. All parameters controlling the solver are defaulted: linsolver_residual_tolerance 1e-8 linsolver_verbosity 0 linsolver_type 1 ( = CG_AMG), alternatives are: CG_ILU0 = 0, CG_AMG = 1, BiCGStab_ILU0 = 2 FastAMG=3, KAMG=4 }; linsolver_save_system false linsolver_save_filename <empty string>=""> linsolver_max_iterations 0 (unlimited=5000) linsolver_residual_tolerance 1e-8 linsolver_smooth_steps 2 linsolver_prolongate_factor 1.6 linsolver_verbosity 0

Opm::LinearSolverIstl::LinearSolverIstl

(

const parameter::ParameterGroup &

param

)

Construct from parameters Accepted parameters are, with defaults, listed in the default constructor.

virtual Opm::LinearSolverIstl::~LinearSolverIstl ( )

virtual

Destructor.

Member Function Documentation

virtual double Opm::LinearSolverIstl::getTolerance ( ) const

virtual

Get tolerance ofthe linear solver.

Parameters

[out]

tolerance

value

Implements Opm::LinearSolverInterface.

virtual void Opm::LinearSolverIstl::setTolerance ( const double  tol )

virtual

Set tolerance for the residual in dune istl linear solver.

Parameters

[in]

tol

tolerance value

Implements Opm::LinearSolverInterface.

LinearSolverReport Opm::LinearSolverInterface::solve ( const CSRMatrix *  A, const double *  rhs, double *  solution  ) const

inherited

Solve a linear system, with a matrix given in compressed sparse row format.

Parameters

[in]	A	matrix in CSR format
[in]	rhs	array of length A->m containing the right hand side
[in,out]	solution	array of length A->m to which the solution will be written, may also be used as initial guess by iterative solvers. Note: this method is a convenience method that calls the virtual solve() method.

virtual LinearSolverReport Opm::LinearSolverIstl::solve ( const int  size, const int  nonzeros, const int *  ia, const int *  ja, const double *  sa, const double *  rhs, double *  solution, const boost::any &  comm = boost::any()  ) const

virtual

Solve a linear system, with a matrix given in compressed sparse row format.

Parameters

[in]	size	# of rows in matrix
[in]	nonzeros	# of nonzeros elements in matrix
[in]	ia	array of length (size + 1) containing start and end indices for each row
[in]	ja	array of length nonzeros containing column numbers for the nonzero elements
[in]	sa	array of length nonzeros containing the values of the nonzero elements
[in]	rhs	array of length size containing the right hand side
[in,out]	solution	array of length size to which the solution will be written, may also be used as initial guess by iterative solvers.

Implements Opm::LinearSolverInterface.

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

• LinearSolverIstl.hpp