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MueLu::CGSolver< Scalar, LocalOrdinal, GlobalOrdinal, Node > Class Template Reference

Implements conjugate gradient algorithm for energy-minimization. More...

#include <MueLu_CGSolver_decl.hpp>

Inheritance diagram for MueLu::CGSolver< Scalar, LocalOrdinal, GlobalOrdinal, Node >:
MueLu::SolverBase< Scalar, LocalOrdinal, GlobalOrdinal, Node > MueLu::BaseClass MueLu::VerboseObject MueLu::Describable Teuchos::VerboseObject< VerboseObject > Teuchos::Describable Teuchos::VerboseObjectBase Teuchos::LabeledObject

Private Attributes

size_t nIts_
 Number of performed iterations. More...
 

Constructors / destructors

 CGSolver (size_t Its)
 

Iterate methods.

void Iterate (const Matrix &A, const Constraint &C, const Matrix &P0, RCP< Matrix > &P) const
 Iterate. More...
 

Additional Inherited Members

- Public Member Functions inherited from MueLu::SolverBase< Scalar, LocalOrdinal, GlobalOrdinal, Node >
 SolverBase ()
 
virtual ~SolverBase ()
 
- Public Member Functions inherited from MueLu::BaseClass
virtual ~BaseClass ()
 Destructor. More...
 
- Public Member Functions inherited from MueLu::VerboseObject
VerbLevel GetVerbLevel () const
 Get the verbosity level. More...
 
void SetVerbLevel (const VerbLevel verbLevel)
 Set the verbosity level of this object. More...
 
int GetProcRankVerbose () const
 Get proc rank used for printing. Do not use this information for any other purpose. More...
 
int SetProcRankVerbose (int procRank) const
 Set proc rank used for printing. More...
 
bool IsPrint (MsgType type, int thisProcRankOnly=-1) const
 Find out whether we need to print out information for a specific message type. More...
 
Teuchos::FancyOStream & GetOStream (MsgType type, int thisProcRankOnly=0) const
 Get an output stream for outputting the input message type. More...
 
Teuchos::FancyOStream & GetBlackHole () const
 
 VerboseObject ()
 
virtual ~VerboseObject ()
 Destructor. More...
 
- Public Member Functions inherited from Teuchos::VerboseObject< VerboseObject >
 VerboseObject (const EVerbosityLevel verbLevel=VERB_DEFAULT, const RCP< FancyOStream > &oStream=Teuchos::null)
 
virtual const VerboseObject & setVerbLevel (const EVerbosityLevel verbLevel) const
 
virtual const VerboseObject & setOverridingVerbLevel (const EVerbosityLevel verbLevel) const
 
virtual EVerbosityLevel getVerbLevel () const
 
TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT
RCP< const ParameterList > 		getValidVerboseObjectSublist ()
 
TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT
void 		setupVerboseObjectSublist (ParameterList *paramList)
 
TEUCHOSPARAMETERLIST_LIB_DLL_EXPORT
void 		readVerboseObjectSublist (ParameterList *paramList, RCP< FancyOStream > *oStream, EVerbosityLevel *verbLevel)
 
void readVerboseObjectSublist (ParameterList *paramList, VerboseObject< ObjectType > *verboseObject)
 
- Public Member Functions inherited from Teuchos::VerboseObjectBase
virtual ~VerboseObjectBase ()
 
 VerboseObjectBase (const RCP< FancyOStream > &oStream=Teuchos::null)
 
virtual const VerboseObjectBase & setOStream (const RCP< FancyOStream > &oStream) const
 
virtual const VerboseObjectBase & setOverridingOStream (const RCP< FancyOStream > &oStream) const
 
virtual VerboseObjectBase & setLinePrefix (const std::string &linePrefix)
 
virtual RCP< FancyOStream > getOStream () const
 
virtual RCP< FancyOStream > getOverridingOStream () const
 
virtual std::string getLinePrefix () const
 
virtual OSTab getOSTab (const int tabs=1, const std::string &linePrefix="") const
 
- Public Member Functions inherited from MueLu::Describable
virtual ~Describable ()
 Destructor. More...
 
virtual std::string ShortClassName () const
 Return the class name of the object, without template parameters and without namespace. More...
 
virtual void describe (Teuchos::FancyOStream &out_arg, const VerbLevel verbLevel=Default) const
 
virtual std::string description () const
 Return a simple one-line description of this object. More...
 
void describe (Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel=Teuchos::Describable::verbLevel_default) const
 Print the object with some verbosity level to an FancyOStream object. More...
 
- Public Member Functions inherited from Teuchos::Describable
void describe (std::ostream &out, const EVerbosityLevel verbLevel=verbLevel_default) const
 
 LabeledObject ()
 
virtual ~LabeledObject ()
 
virtual void setObjectLabel (const std::string &objectLabel)
 
virtual std::string getObjectLabel () const
 
DescribableStreamManipulatorState describe (const Describable &describable, const EVerbosityLevel verbLevel=Describable::verbLevel_default)
 
std::ostream & operator<< (std::ostream &os, const DescribableStreamManipulatorState &d)
 
- Static Public Member Functions inherited from MueLu::VerboseObject
static void SetMueLuOStream (const Teuchos::RCP< Teuchos::FancyOStream > &mueluOStream)
 
static void SetMueLuOFileStream (const std::string &filename)
 
static Teuchos::RCP
< Teuchos::FancyOStream > 		GetMueLuOStream ()
 
static void SetDefaultVerbLevel (const VerbLevel defaultVerbLevel)
 Set the default (global) verbosity level. More...
 
static VerbLevel GetDefaultVerbLevel ()
 Get the default (global) verbosity level. More...
 
- Static Public Member Functions inherited from Teuchos::VerboseObject< VerboseObject >
static void setDefaultVerbLevel (const EVerbosityLevel defaultVerbLevel)
 
static EVerbosityLevel getDefaultVerbLevel ()
 
- Static Public Member Functions inherited from Teuchos::VerboseObjectBase
static void setDefaultOStream (const RCP< FancyOStream > &defaultOStream)
 
static RCP< FancyOStream > getDefaultOStream ()
 
- Static Public Attributes inherited from Teuchos::Describable
static const EVerbosityLevel verbLevel_default
 
- Protected Member Functions inherited from Teuchos::VerboseObject< VerboseObject >
void initializeVerboseObject (const EVerbosityLevel verbLevel=VERB_DEFAULT, const RCP< FancyOStream > &oStream=Teuchos::null)
 
- Protected Member Functions inherited from Teuchos::VerboseObjectBase
void initializeVerboseObjectBase (const RCP< FancyOStream > &oStream=Teuchos::null)
 
virtual void informUpdatedVerbosityState () const
 

Detailed Description

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
class MueLu::CGSolver< Scalar, LocalOrdinal, GlobalOrdinal, Node >

Implements conjugate gradient algorithm for energy-minimization.

This is CG applied to the problem

\[ \min_P \frac12 \sum_i (p_i)^T A p_i \]

subject to

\[ P(i,j) = 0 \quad \mbox{if} \; (i,j) \mbox{ is not in SparsityPattern} \]

and

\[ P cnull = fnull. \]

Note
For now we assume, that matrices have real values. The case of complex values is not explored.

Definition at line 43 of file MueLu_CGSolver_decl.hpp.

Constructor & Destructor Documentation

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
MueLu::CGSolver< Scalar, LocalOrdinal, GlobalOrdinal, Node >::CGSolver ( size_t  Its)

Constructor

Parameters
Its– Number of performed iterations

Definition at line 26 of file MueLu_CGSolver_def.hpp.

Member Function Documentation

template<class Scalar , class LocalOrdinal , class GlobalOrdinal , class Node >
void MueLu::CGSolver< Scalar, LocalOrdinal, GlobalOrdinal, Node >::Iterate ( const Matrix &  A,
const Constraint &  C,
const Matrix &  P0,
RCP< Matrix > &  P 
) const
virtual

Iterate.

Implements MueLu::SolverBase< Scalar, LocalOrdinal, GlobalOrdinal, Node >.

Definition at line 30 of file MueLu_CGSolver_def.hpp.

Member Data Documentation

template<class Scalar = DefaultScalar, class LocalOrdinal = DefaultLocalOrdinal, class GlobalOrdinal = DefaultGlobalOrdinal, class Node = DefaultNode>
size_t MueLu::CGSolver< Scalar, LocalOrdinal, GlobalOrdinal, Node >::nIts_
private

Number of performed iterations.

Definition at line 67 of file MueLu_CGSolver_decl.hpp.

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