Reference documentation for deal.II version 8.1.0
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SolverSelector< VECTOR > Class Template Reference

#include <solver_selector.h>

Inheritance diagram for SolverSelector< VECTOR >:
[legend]

Public Member Functions

 SolverSelector ()
 
 SolverSelector (const std::string &solvername, SolverControl &control, VectorMemory< VECTOR > &vector_memory) DEAL_II_DEPRECATED
 
 ~SolverSelector ()
 
template<class Matrix , class Preconditioner >
void solve (const Matrix &A, VECTOR &x, const VECTOR &b, const Preconditioner &precond) const
 
void select (const std::string &name)
 
void set_control (SolverControl &ctrl)
 
void set_data (const typename SolverRichardson< VECTOR >::AdditionalData &data)
 
void set_data (const typename SolverCG< VECTOR >::AdditionalData &data)
 
void set_data (const typename SolverMinRes< VECTOR >::AdditionalData &data)
 
void set_data (const typename SolverBicgstab< VECTOR >::AdditionalData &data)
 
void set_data (const typename SolverGMRES< VECTOR >::AdditionalData &data)
 
void set_data (const typename SolverFGMRES< VECTOR >::AdditionalData &data)
 
 DeclException1 (ExcSolverDoesNotExist, std::string,<< "Solver "<< arg1<< " does not exist. Use one of "<< std::endl<< get_solver_names())
 
- Public Member Functions inherited from Subscriptor
 Subscriptor ()
 
 Subscriptor (const Subscriptor &)
 
virtual ~Subscriptor ()
 
Subscriptoroperator= (const Subscriptor &)
 
void subscribe (const char *identifier=0) const
 
void unsubscribe (const char *identifier=0) const
 
unsigned int n_subscriptions () const
 
void list_subscribers () const
 
 DeclException3 (ExcInUse, int, char *, std::string &,<< "Object of class "<< arg2<< " is still used by "<< arg1<< " other objects.\n"<< "(Additional information: "<< arg3<< ")\n"<< "Note the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) for "<< "more information on what this error means.")
 
 DeclException2 (ExcNoSubscriber, char *, char *,<< "No subscriber with identifier \""<< arg2<< "\" did subscribe to this object of class "<< arg1)
 
template<class Archive >
void serialize (Archive &ar, const unsigned int version)
 

Static Public Member Functions

static std::string get_solver_names ()
 

Protected Attributes

SmartPointer< SolverControl,
SolverSelector< VECTOR > > 
control
 
std::string solver_name
 

Private Attributes

SolverRichardson< VECTOR >
::AdditionalData 
richardson_data
 
SolverCG< VECTOR >::AdditionalData cg_data
 
SolverMinRes< VECTOR >
::AdditionalData 
minres_data
 
SolverBicgstab< VECTOR >
::AdditionalData 
bicgstab_data
 
SolverGMRES< VECTOR >
::AdditionalData 
gmres_data
 
SolverFGMRES< VECTOR >
::AdditionalData 
fgmres_data
 

Detailed Description

template<class VECTOR = Vector<double>>
class SolverSelector< VECTOR >

Selects a solver by changing a parameter.

By calling the solve function of this SolverSelector, it selects the solve function of that Solver that was specified in the constructor of this class.

Usage

The simplest use of this class is the following:

// generate a @p SolverControl and
// a @p VectorMemory
// Line 3:
//
// generate a @p SolverSelector that
// calls the @p SolverCG
solver_selector("cg", control, memory);
// generate e.g. a @p PreconditionRelaxation
preconditioning(A, &SparseMatrix<double>
::template precondition_SSOR<double>,0.8);
// call the @p solve function with this
// preconditioning as last argument
solver_selector.solve(A,x,b,preconditioning);

But the full usefulness of the SolverSelector class is not clear until the presentation of the following example that assumes the user using the ParameterHandler class and having declared a "solver" entry, e.g. with

Parameter_Handler prm;
prm.declare_entry ("solver", "none",
...

Assuming that in the users parameter file there exists the line

set solver = cg

then `Line 3' of the above example reads

solver_selector(prm.get("solver"), control, memory);

If at some time there exists a new solver "xyz" then the user does not need to change his program. Only in the implementation of the SolverSelector the calling of this solver has to be added and each user with program lines quoted above only needs to 'set solver = xyz' in his parameter file to get access to that new solver. :-)

(By the way, thanks to Wolfgang for implementing the ParameterHandler.)

Author
Ralf Hartmann, 1999

Definition at line 101 of file solver_selector.h.

Constructor & Destructor Documentation

template<class VECTOR >
SolverSelector< VECTOR >::SolverSelector ( )

Constructor, filling in default values

Definition at line 263 of file solver_selector.h.

template<class VECTOR >
SolverSelector< VECTOR >::SolverSelector ( const std::string &  solvername,
SolverControl control,
VectorMemory< VECTOR > &  vector_memory 
)
Deprecated:
Use the default constructor, set_control() and select().

Constructor. Use the arguments to initialize actual solver objects. The VectorMemory argument is ignored.

Definition at line 268 of file solver_selector.h.

template<class VECTOR >
SolverSelector< VECTOR >::~SolverSelector ( )

Destructor

Definition at line 277 of file solver_selector.h.

Member Function Documentation

template<class VECTOR >
template<class Matrix , class Preconditioner >
void SolverSelector< VECTOR >::solve ( const Matrix &  A,
VECTOR &  x,
const VECTOR &  b,
const Preconditioner &  precond 
) const

Solver procedure. Calls the solve function of the solver whose SolverName was specified in the constructor.

Definition at line 292 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::select ( const std::string &  name)

Select a new solver. Note that all solver names used in this class are all lower case.

Definition at line 283 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_control ( SolverControl ctrl)

Set a new SolverControl. This needs to be set before solving.

Definition at line 333 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_data ( const typename SolverRichardson< VECTOR >::AdditionalData &  data)

Set the additional data. For more info see the Solver class.

Definition at line 364 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_data ( const typename SolverCG< VECTOR >::AdditionalData &  data)

Set the additional data. For more info see the Solver class.

Definition at line 372 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_data ( const typename SolverMinRes< VECTOR >::AdditionalData &  data)

Set the additional data. For more info see the Solver class.

Definition at line 380 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_data ( const typename SolverBicgstab< VECTOR >::AdditionalData &  data)

Set the additional data. For more info see the Solver class.

Definition at line 388 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_data ( const typename SolverGMRES< VECTOR >::AdditionalData &  data)

Set the additional data. For more info see the Solver class.

Definition at line 348 of file solver_selector.h.

template<class VECTOR >
void SolverSelector< VECTOR >::set_data ( const typename SolverFGMRES< VECTOR >::AdditionalData &  data)

Set the additional data. For more info see the Solver class.

Definition at line 356 of file solver_selector.h.

template<class VECTOR >
std::string SolverSelector< VECTOR >::get_solver_names ( )
static

Get the names of all implemented solvers.

Definition at line 341 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverSelector< VECTOR >::DeclException1 ( ExcSolverDoesNotExist  ,
std::string  ,
<< "Solver "<< arg1<< " does not exist. Use one of "<< std::endl<<   get_solver_names() 
)

Exception.

Member Data Documentation

template<class VECTOR = Vector<double>>
SmartPointer< SolverControl, SolverSelector< VECTOR > > SolverSelector< VECTOR >::control
protected

Stores the SolverControl that is needed in the constructor of each Solver class. This can be changed with set_control().

Definition at line 219 of file solver_selector.h.

template<class VECTOR = Vector<double>>
std::string SolverSelector< VECTOR >::solver_name
protected

Stores the name of the solver.

Definition at line 224 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverRichardson<VECTOR>::AdditionalData SolverSelector< VECTOR >::richardson_data
private

Stores the additional data.

Definition at line 230 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverCG<VECTOR>::AdditionalData SolverSelector< VECTOR >::cg_data
private

Stores the additional data.

Definition at line 235 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverMinRes<VECTOR>::AdditionalData SolverSelector< VECTOR >::minres_data
private

Stores the additional data.

Definition at line 240 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverBicgstab<VECTOR>::AdditionalData SolverSelector< VECTOR >::bicgstab_data
private

Stores the additional data.

Definition at line 245 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverGMRES<VECTOR>::AdditionalData SolverSelector< VECTOR >::gmres_data
private

Stores the additional data.

Definition at line 250 of file solver_selector.h.

template<class VECTOR = Vector<double>>
SolverFGMRES<VECTOR>::AdditionalData SolverSelector< VECTOR >::fgmres_data
private

Stores the additional data.

Definition at line 255 of file solver_selector.h.


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