dune-istl
2.4.1-rc2
|
Minimal Residual Method (MINRES) More...
#include <dune/istl/solvers.hh>
Public Types | |
typedef X | domain_type |
The domain type of the operator to be inverted. More... | |
typedef X | range_type |
The range type of the operator to be inverted. More... | |
typedef X::field_type | field_type |
The field type of the operator to be inverted. More... | |
typedef FieldTraits< field_type >::real_type | real_type |
The real type of the field type (is the same if using real numbers, but differs for std::complex) More... | |
Public Member Functions | |
template<class L , class P > | |
MINRESSolver (L &op, P &prec, real_type reduction, int maxit, int verbose) | |
Set up MINRES solver. More... | |
template<class L , class S , class P > | |
MINRESSolver (L &op, S &sp, P &prec, real_type reduction, int maxit, int verbose) | |
Set up MINRES solver. More... | |
virtual void | apply (X &x, X &b, InverseOperatorResult &res) |
Apply inverse operator. More... | |
virtual void | apply (X &x, X &b, double reduction, InverseOperatorResult &res) |
Apply inverse operator with given reduction factor. More... | |
Protected Types | |
enum | |
Protected Member Functions | |
void | printHeader (std::ostream &s) const |
helper function for printing header of solver output More... | |
void | printOutput (std::ostream &s, const CountType &iter, const DataType &norm, const DataType &norm_old) const |
helper function for printing solver output More... | |
void | printOutput (std::ostream &s, const CountType &iter, const DataType &norm) const |
helper function for printing solver output More... | |
Minimal Residual Method (MINRES)
Symmetrically Preconditioned MINRES as in A. Greenbaum, 'Iterative Methods for Solving Linear Systems', pp. 121 Iterative solver for symmetric indefinite operators. Note that in order to ensure the (symmetrically) preconditioned system to remain symmetric, the preconditioner has to be spd.
typedef X Dune::MINRESSolver< X >::domain_type |
The domain type of the operator to be inverted.
typedef X::field_type Dune::MINRESSolver< X >::field_type |
The field type of the operator to be inverted.
typedef X Dune::MINRESSolver< X >::range_type |
The range type of the operator to be inverted.
typedef FieldTraits<field_type>::real_type Dune::MINRESSolver< X >::real_type |
The real type of the field type (is the same if using real numbers, but differs for std::complex)
|
protectedinherited |
|
inline |
Set up MINRES solver.
References Dune::SolverCategory::sequential.
|
inline |
Set up MINRES solver.
|
inlinevirtual |
Apply inverse operator.
Apply inverse operator,.
x | The left hand side to store the result in. |
b | The right hand side |
res | Object to store the statistics about applying the operator. |
Implements Dune::InverseOperator< X, X >.
References Dune::InverseOperatorResult::clear(), Dune::InverseOperatorResult::conv_rate, Dune::InverseOperatorResult::converged, Dune::InverseOperatorResult::elapsed, Dune::InverseOperatorResult::iterations, Dune::InverseOperator< X, X >::printHeader(), Dune::InverseOperator< X, X >::printOutput(), and Dune::InverseOperatorResult::reduction.
|
inlinevirtual |
Apply inverse operator with given reduction factor.
apply inverse operator, with given convergence criteria.
x | The left hand side to store the result in. |
b | The right hand side |
reduction | The minimum defect reduction to achieve. |
res | Object to store the statistics about applying the operator. |
Implements Dune::InverseOperator< X, X >.
|
inlineprotectedinherited |
helper function for printing header of solver output
Referenced by Dune::LoopSolver< X >::apply(), Dune::GradientSolver< X >::apply(), Dune::CGSolver< X >::apply(), Dune::BiCGSTABSolver< X >::apply(), Dune::MINRESSolver< X >::apply(), Dune::RestartedGMResSolver< X, Y, F >::apply(), and Dune::GeneralizedPCGSolver< X >::apply().
|
inlineprotectedinherited |
helper function for printing solver output
Referenced by Dune::LoopSolver< X >::apply(), Dune::GradientSolver< X >::apply(), Dune::CGSolver< X >::apply(), Dune::BiCGSTABSolver< X >::apply(), Dune::MINRESSolver< X >::apply(), Dune::RestartedGMResSolver< X, Y, F >::apply(), and Dune::GeneralizedPCGSolver< X >::apply().
|
inlineprotectedinherited |
helper function for printing solver output