Dune Core Modules (2.8.0)
solver.hh
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147 DUNE_THROW(Dune::Exception,"It is necessary to implement the category method in a derived classes, in the future this method will pure virtual.");
228 IterativeSolver (LinearOperator<X,Y>& op, Preconditioner<X,Y>& prec, scalar_real_type reduction, int maxit, int verbose) :
265 _reduction(reduction), _maxit(maxit), _verbose(verbose), _category(SolverCategory::category(op))
268 DUNE_THROW(InvalidSolverCategory, "LinearOperator and Preconditioner must have the same SolverCategory!");
270 DUNE_THROW(InvalidSolverCategory, "LinearOperator and ScalarProduct must have the same SolverCategory!");
288 IterativeSolver (std::shared_ptr<LinearOperator<X,Y> > op, std::shared_ptr<Preconditioner<X,X> > prec, const ParameterTree& configuration) :
311 IterativeSolver (std::shared_ptr<LinearOperator<X,Y> > op, std::shared_ptr<ScalarProduct<X> > sp, std::shared_ptr<Preconditioner<X,X> > prec, const ParameterTree& configuration) :
349 DUNE_THROW(InvalidSolverCategory, "LinearOperator and Preconditioner must have the same SolverCategory!");
351 DUNE_THROW(InvalidSolverCategory, "LinearOperator and ScalarProduct must have the same SolverCategory!");
473 _res.converged = (Simd::allTrue(def<_def0*_parent._reduction) || Simd::max(def)<1E-30); // convergence check
void printHeader(std::ostream &s) const
helper function for printing header of solver output
Definition: solver.hh:161
virtual ~InverseOperator()
Destructor.
Definition: solver.hh:154
void printOutput(std::ostream &s, const CountType &iter, const DataType &norm) const
helper function for printing solver output
Definition: solver.hh:183
void printOutput(std::ostream &s, const CountType &iter, const DataType &norm, const DataType &norm_old) const
helper function for printing solver output
Definition: solver.hh:170
virtual void apply(X &x, Y &b, double reduction, InverseOperatorResult &res)=0
apply inverse operator, with given convergence criteria.
Simd::Scalar< real_type > scalar_real_type
scalar type underlying the field_type
Definition: solver.hh:112
Y range_type
Type of the range of the operator to be inverted.
Definition: solver.hh:103
X domain_type
Type of the domain of the operator to be inverted.
Definition: solver.hh:100
virtual void apply(X &x, Y &b, InverseOperatorResult &res)=0
Apply inverse operator,.
X::field_type field_type
The field type of the operator.
Definition: solver.hh:106
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)
Definition: solver.hh:109
virtual SolverCategory::Category category() const =0
Category of the solver (see SolverCategory::Category)
bool step(CountType i, real_type def)
registers the iteration step, checks for invalid defect norm and convergence.
Definition: solver.hh:453
Base class for all implementations of iterative solvers.
Definition: solver.hh:201
IterativeSolver(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 maxit, int verbose)
General constructor to initialize an iterative solver.
Definition: solver.hh:338
IterativeSolver(LinearOperator< X, Y > &op, ScalarProduct< X > &sp, Preconditioner< X, Y > &prec, scalar_real_type reduction, int maxit, int verbose)
General constructor to initialize an iterative solver.
Definition: solver.hh:260
virtual void apply(X &x, X &b, double reduction, InverseOperatorResult &res)
Apply inverse operator with given reduction factor.
Definition: solver.hh:372
IterativeSolver(std::shared_ptr< LinearOperator< X, Y > > op, std::shared_ptr< Preconditioner< X, X > > prec, const ParameterTree &configuration)
Constructor.
Definition: solver.hh:288
IterativeSolver(LinearOperator< X, Y > &op, Preconditioner< X, Y > &prec, scalar_real_type reduction, int maxit, int verbose)
General constructor to initialize an iterative solver.
Definition: solver.hh:228
IterativeSolver(std::shared_ptr< LinearOperator< X, Y > > op, std::shared_ptr< ScalarProduct< X > > sp, std::shared_ptr< Preconditioner< X, X > > prec, const ParameterTree &configuration)
Constructor.
Definition: solver.hh:311
virtual SolverCategory::Category category() const
Category of the solver (see SolverCategory::Category)
Definition: solver.hh:381
Base class for matrix free definition of preconditioners.
Definition: preconditioner.hh:30
Base class for scalar product and norm computation.
Definition: scalarproducts.hh:50
Helper class for notifying a DUNE-ISTL linear solver about a change of the iteration matrix object in...
Definition: solver.hh:520
double elapsed() const noexcept
Get elapsed user-time from last reset until now/last stop in seconds.
Definition: timer.hh:75
A few common exception classes.
IO interface of the SIMD abstraction.
bool allTrue(const Mask &mask)
Whether all entries are true
Definition: interface.hh:437
auto max(const V &v1, const V &v2)
The binary maximum value over two simd objects.
Definition: interface.hh:407
typename Overloads::ScalarType< std::decay_t< V > >::type Scalar
Element type of some SIMD type.
Definition: interface.hh:233
std::shared_ptr< T > stackobject_to_shared_ptr(T &t)
Create a shared_ptr for a stack-allocated object.
Definition: shared_ptr.hh:70
std::string className()
Provide the demangled class name of a type T as a string.
Definition: classname.hh:45
STL namespace.
Define general, extensible interface for operators. The available implementation wraps a matrix.
A hierarchical structure of string parameters.
Define base class for scalar product and norm.
Include file for users of the SIMD abstraction layer.
Templates characterizing the type of a solver.
Statistics about the application of an inverse operator.
Definition: solver.hh:46
InverseOperatorResult()
Default constructor.
Definition: solver.hh:48
double condition_estimate
Estimate of condition number.
Definition: solver.hh:77
double conv_rate
Convergence rate (average reduction per step)
Definition: solver.hh:74
bool converged
True if convergence criterion has been met.
Definition: solver.hh:71
@ sequential
Category for sequential solvers.
Definition: solvercategory.hh:23
static Category category(const OP &op, decltype(op.category()) *=nullptr)
Helperfunction to extract the solver category either from an enum, or from the newly introduced virtu...
Definition: solvercategory.hh:32
Implementation that works together with iterative ISTL solvers, e.g. Dune::CGSolver or Dune::BiCGSTAB...
Definition: solver.hh:538
A simple timing class.
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