DUNE PDELab (2.8)
implements the Generalized Minimal Residual (GMRes) method More...
#include <dune/istl/solvers.hh>
Public Types | |
typedef X | domain_type |
Type of the domain of the operator to be inverted. | |
typedef X | range_type |
Type of the range of the operator to be inverted. | |
typedef X::field_type | field_type |
The field type of the operator. | |
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) | |
typedef Simd::Scalar< real_type > | scalar_real_type |
scalar type underlying the field_type | |
Public Member Functions | |
RestartedGMResSolver (LinearOperator< X, Y > &op, Preconditioner< X, Y > &prec, scalar_real_type reduction, int restart, int maxit, int verbose) | |
Set up RestartedGMResSolver solver. More... | |
RestartedGMResSolver (LinearOperator< X, Y > &op, ScalarProduct< X > &sp, Preconditioner< X, Y > &prec, scalar_real_type reduction, int restart, int maxit, int verbose) | |
Set up RestartedGMResSolver solver. More... | |
RestartedGMResSolver (std::shared_ptr< LinearOperator< X, Y > > op, std::shared_ptr< Preconditioner< X, X > > prec, const ParameterTree &configuration) | |
Constructor. More... | |
RestartedGMResSolver (std::shared_ptr< LinearOperator< X, Y > > op, std::shared_ptr< ScalarProduct< X > > sp, std::shared_ptr< Preconditioner< X, Y > > prec, scalar_real_type reduction, int restart, int maxit, int verbose) | |
Set up RestartedGMResSolver solver. More... | |
virtual void | apply (X &x, Y &b, InverseOperatorResult &res) |
Apply inverse operator. More... | |
virtual void | apply (X &x, Y &b, double reduction, 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... | |
virtual void | apply (X &x, X &b, InverseOperatorResult &res)=0 |
Apply inverse operator,. More... | |
virtual SolverCategory::Category | category () const |
Category of the solver (see SolverCategory::Category) | |
Protected Types | |
using | fAlloc = ReboundAllocatorType< X, field_type > |
field_type Allocator retrieved from domain type | |
using | rAlloc = ReboundAllocatorType< X, real_type > |
real_type Allocator retrieved from domain type | |
Detailed Description
class Dune::RestartedGMResSolver< X, Y, F >
implements the Generalized Minimal Residual (GMRes) method
GMRes solves the unsymmetric linear system Ax = b using the Generalized Minimal Residual method as described the SIAM Templates book (http://www.netlib.org/templates/templates.pdf).
- Template Parameters
-
X trial vector, vector type of the solution Y test vector, vector type of the RHS F vector type for orthonormal basis of Krylov space
Constructor & Destructor Documentation
◆ RestartedGMResSolver() [1/4]
|
inline |
Set up RestartedGMResSolver solver.
- Parameters
-
restart number of GMRes cycles before restart
◆ RestartedGMResSolver() [2/4]
|
inline |
Set up RestartedGMResSolver solver.
- Parameters
-
restart number of GMRes cycles before restart
◆ RestartedGMResSolver() [3/4]
|
inline |
Constructor.
Additional parameter:
ParameterTree Key | Meaning |
---|---|
restart | number of GMRes cycles before restart |
See ISTL_Factory for the ParameterTree layout and examples.
◆ RestartedGMResSolver() [4/4]
|
inline |
Set up RestartedGMResSolver solver.
- Parameters
-
restart number of GMRes cycles before restart
Member Function Documentation
◆ apply() [1/4]
|
inlinevirtualinherited |
Apply inverse operator with given reduction factor.
apply inverse operator, with given convergence criteria.
- Warning
- Right hand side b may be overwritten!
- Parameters
-
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.
- Exceptions
-
SolverAbort When the solver detects a problem and cannot continue
Implements Dune::InverseOperator< X, X >.
Reimplemented in Dune::RestartedGMResSolver< X, X >.
◆ apply() [2/4]
|
pure virtualinherited |
Apply inverse operator,.
- Warning
- Note: right hand side b may be overwritten!
- Parameters
-
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.
- Exceptions
-
SolverAbort When the solver detects a problem and cannot continue
Implemented in Dune::LoopSolver< X >, Dune::GradientSolver< X >, Dune::CGSolver< X >, Dune::BiCGSTABSolver< X >, Dune::MINRESSolver< X >, Dune::RestartedGMResSolver< X, X >, Dune::GeneralizedPCGSolver< X >, Dune::RestartedFCGSolver< X >, and Dune::CompleteFCGSolver< X >.
◆ apply() [3/4]
|
inlinevirtual |
Apply inverse operator.
apply inverse operator, with given convergence criteria.
- Warning
- Right hand side b may be overwritten!
- Parameters
-
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.
- Exceptions
-
SolverAbort When the solver detects a problem and cannot continue
- Note
- Currently, the RestartedGMResSolver aborts when it detects a breakdown.
References Dune::Simd::allTrue(), Dune::InverseOperatorResult::converged, and DUNE_THROW.
◆ apply() [4/4]
|
inlinevirtual |
Apply inverse operator.
Apply inverse operator,.
- Warning
- Note: right hand side b may be overwritten!
- Parameters
-
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.
- Exceptions
-
SolverAbort When the solver detects a problem and cannot continue
- Note
- Currently, the RestartedGMResSolver aborts when it detects a breakdown.
References Dune::RestartedGMResSolver< X, Y, F >::apply(), and Dune::Simd::max().
Referenced by Dune::RestartedGMResSolver< X, Y, F >::apply().
The documentation for this class was generated from the following file:
- dune/istl/solvers.hh
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