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MueLu
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Class that encapsulates Ifpack2 smoothers. More...
#include <MueLu_Ifpack2Smoother_decl.hpp>
Constructors / destructors | |
| template<class Scalar2 , class LocalOrdinal2 , class GlobalOrdinal2 , class Node2 > | |
| class | Ifpack2Smoother |
| Constructor. More... | |
| Ifpack2Smoother (const std::string &type, const Teuchos::ParameterList ¶mList=Teuchos::ParameterList(), const LO &overlap=0) | |
| virtual | ~Ifpack2Smoother () |
| Destructor. More... | |
| void | SetParameterList (const Teuchos::ParameterList ¶mList) |
| Set parameters from a parameter list and return with default values. More... | |
| void | DeclareInput (Level ¤tLevel) const |
| Input. More... | |
Overridden from Teuchos::Describable | |
| std::string | type_ |
| ifpack2-specific key phrase that denote smoother type More... | |
| LO | overlap_ |
| overlap when using the smoother in additive Schwarz mode More... | |
| RCP< Ifpack2::Preconditioner< Scalar, LocalOrdinal, GlobalOrdinal, Node > > | prec_ |
| pointer to Ifpack2 preconditioner object More... | |
| RCP< Matrix > | A_ |
| matrix, used in apply if solving residual equation More... | |
| std::string | description () const |
| Return a simple one-line description of this object. More... | |
| void | print (Teuchos::FancyOStream &out, const VerbLevel verbLevel=Default) const |
| Print the object with some verbosity level to an FancyOStream object. More... | |
| RCP< Ifpack2::Preconditioner< Scalar, LocalOrdinal, GlobalOrdinal, Node > > | getPreconditioner () |
| For diagnostic purposes. More... | |
| size_t | getNodeSmootherComplexity () const |
| Get a rough estimate of cost per iteration. More... | |
| void | SetPrecParameters (const Teuchos::ParameterList &list=Teuchos::ParameterList()) const |
| void | SetupSchwarz (Level ¤tLevel) |
| void | SetupChebyshev (Level ¤tLevel) |
| void | SetupLineSmoothing (Level ¤tLevel) |
| void | SetupBlockRelaxation (Level ¤tLevel) |
| void | SetupTopological (Level ¤tLevel) |
| void | SetupGeneric (Level ¤tLevel) |
Computational methods. | |
| void | Setup (Level ¤tLevel) |
| Set up the smoother. More... | |
| void | Apply (MultiVector &X, const MultiVector &B, bool InitialGuessIsZero=false) const |
| Apply the preconditioner. More... | |
Utilities | |
| RCP< SmootherPrototype > | Copy () const |
Additional Inherited Members | |
Public Types inherited from MueLu::SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type >::global_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type >::global_ordinal_type >::node_type > | |
| typedef SmootherPrototype<>::scalar_type | scalar_type |
| typedef typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type | local_ordinal_type |
| typedef typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type >::global_ordinal_type | global_ordinal_type |
| typedef typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type >::global_ordinal_type >::node_type | node_type |
Public Types inherited from MueLu::SmootherBase< Scalar, LocalOrdinal, GlobalOrdinal, Node > | |
| typedef Scalar | scalar_type |
| typedef LocalOrdinal | local_ordinal_type |
| typedef GlobalOrdinal | global_ordinal_type |
| typedef Node | node_type |
Public Member Functions inherited from MueLu::SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type >::global_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type, typename SmootherPrototype< SmootherPrototype<>::scalar_type >::local_ordinal_type >::global_ordinal_type >::node_type > | |
| SmootherPrototype () | |
| @nameConstructors/Destructors. More... | |
| virtual | ~SmootherPrototype () |
| virtual void | CallBuild (Level &) const |
| virtual void | CallDeclareInput (Level &requestedLevel) const |
| bool | IsSetup () const |
| Get the state of a smoother prototype. More... | |
| void | IsSetup (bool const &ToF) |
| Set the state of a smoother prototype. More... | |
Public Member Functions inherited from MueLu::SmootherBase< Scalar, LocalOrdinal, GlobalOrdinal, Node > | |
| SmootherBase () | |
| virtual | ~SmootherBase () |
Public Member Functions inherited from MueLu::BaseClass | |
| virtual | ~BaseClass () |
| Destructor. More... | |
Public Member Functions inherited from MueLu::VerboseObject | |
| VerboseObject () | |
| virtual | ~VerboseObject () |
| Destructor. More... | |
| 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 |
Public Member Functions inherited from MueLu::Describable | |
| virtual | ~Describable () |
| Destructor. More... | |
| virtual void | describe (Teuchos::FancyOStream &out_arg, const VerbLevel verbLevel=Default) const |
| 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... | |
| virtual std::string | ShortClassName () const |
| Return the class name of the object, without template parameters and without namespace. More... | |
Public Member Functions inherited from MueLu::Factory | |
| Factory () | |
| Constructor. More... | |
| virtual | ~Factory () |
| Destructor. More... | |
| virtual void | SetFactory (const std::string &varName, const RCP< const FactoryBase > &factory) |
| Configuration. More... | |
| const RCP< const FactoryBase > | GetFactory (const std::string &varName) const |
| Default implementation of FactoryAcceptor::GetFactory() More... | |
| RCP< ParameterList > | RemoveFactoriesFromList (const ParameterList &list) const |
| virtual RCP< const ParameterList > | GetValidParameterList () const |
| Return a const parameter list of valid parameters that setParameterList() will accept. More... | |
| void | EnableMultipleCallCheck () const |
| void | DisableMultipleCallCheck () const |
| void | ResetDebugData () const |
Public Member Functions inherited from MueLu::FactoryBase | |
| FactoryBase () | |
| Constructor. More... | |
| virtual | ~FactoryBase () |
| Destructor. More... | |
| int | GetID () const |
| return unique factory id More... | |
Public Member Functions inherited from MueLu::FactoryAcceptor | |
| virtual | ~FactoryAcceptor () |
Public Member Functions inherited from MueLu::ParameterListAcceptorImpl | |
| ParameterListAcceptorImpl () | |
| virtual | ~ParameterListAcceptorImpl ()=default |
| virtual const Teuchos::ParameterList & | GetParameterList () const |
| void | SetParameter (const std::string &name, const ParameterEntry &entry) |
| Set a parameter directly as a ParameterEntry. More... | |
| const ParameterEntry & | GetParameter (const std::string &name) const |
| Retrieves a const entry with the name name. More... | |
| virtual void | GetDocumentation (std::ostream &os) const |
Public Member Functions inherited from MueLu::ParameterListAcceptor | |
| ParameterListAcceptor () | |
| virtual | ~ParameterListAcceptor ()=default |
Static Public Member Functions inherited from MueLu::VerboseObject | |
| static void | SetDefaultVerbLevel (const VerbLevel defaultVerbLevel) |
| Set the default (global) verbosity level. More... | |
| static VerbLevel | GetDefaultVerbLevel () |
| Get the default (global) verbosity level. More... | |
| static void | SetMueLuOStream (const Teuchos::RCP< Teuchos::FancyOStream > &mueluOStream) |
| static Teuchos::RCP< Teuchos::FancyOStream > | GetMueLuOStream () |
Static Public Member Functions inherited from MueLu::Factory | |
| static void | EnableTimerSync () |
| static void | DisableTimerSync () |
| static void | EnableMultipleCheckGlobally () |
| static void | DisableMultipleCheckGlobally () |
Protected Member Functions inherited from MueLu::Factory | |
| void | Input (Level &level, const std::string &varName) const |
| void | Input (Level &level, const std::string &varName, const std::string &varParamName) const |
| template<class T > | |
| T | Get (Level &level, const std::string &varName) const |
| template<class T > | |
| T | Get (Level &level, const std::string &varName, const std::string &varParamName) const |
| template<class T > | |
| void | Set (Level &level, const std::string &varName, const T &data) const |
| bool | IsAvailable (Level &level, const std::string &varName) const |
Static Protected Attributes inherited from MueLu::Factory | |
| static bool | timerSync_ = false |
Class that encapsulates Ifpack2 smoothers.
This class creates an Ifpack2 preconditioner factory. The factory creates a smoother based on the type and ParameterList passed into the constructor. See the constructor for more information.
Definition at line 93 of file MueLu_Ifpack2Smoother_decl.hpp.
| MueLu::Ifpack2Smoother< Scalar, LocalOrdinal, GlobalOrdinal, Node >::Ifpack2Smoother | ( | const std::string & | type, |
| const Teuchos::ParameterList & | paramList = Teuchos::ParameterList(), |
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| const LO & | overlap = 0 |
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| ) |
Definition at line 89 of file MueLu_Ifpack2Smoother_def.hpp.
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Destructor.
Definition at line 146 of file MueLu_Ifpack2Smoother_decl.hpp.
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Set parameters from a parameter list and return with default values.
Reimplemented from MueLu::ParameterListAcceptorImpl.
Definition at line 96 of file MueLu_Ifpack2Smoother_def.hpp.
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Input.
Definition at line 119 of file MueLu_Ifpack2Smoother_def.hpp.
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Set up the smoother.
This creates the underlying Ifpack2 smoother object, copies any parameter list options supplied to the constructor to the Ifpack2 object, and computes the preconditioner.
TODO The eigenvalue estimate should come from A_, not the Ifpack2 parameter list.
Definition at line 167 of file MueLu_Ifpack2Smoother_def.hpp.
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Apply the preconditioner.
Solves the linear system AX=B using the constructed smoother.
| X | initial guess |
| B | right-hand side |
| InitialGuessIsZero | (optional) If false, some work can be avoided. Whether this actually saves any work depends on the underlying Ifpack2 implementation. |
Implements MueLu::SmootherBase< Scalar, LocalOrdinal, GlobalOrdinal, Node >.
Definition at line 684 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 749 of file MueLu_Ifpack2Smoother_def.hpp.
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Return a simple one-line description of this object.
Reimplemented from MueLu::Describable.
Definition at line 756 of file MueLu_Ifpack2Smoother_def.hpp.
| void MueLu::Ifpack2Smoother< Scalar, LocalOrdinal, GlobalOrdinal, Node >::print | ( | Teuchos::FancyOStream & | out, |
| const VerbLevel | verbLevel = Default |
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| ) | const |
Print the object with some verbosity level to an FancyOStream object.
Definition at line 768 of file MueLu_Ifpack2Smoother_def.hpp.
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For diagnostic purposes.
Definition at line 212 of file MueLu_Ifpack2Smoother_decl.hpp.
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Get a rough estimate of cost per iteration.
Implements MueLu::SmootherBase< Scalar, LocalOrdinal, GlobalOrdinal, Node >.
Definition at line 795 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 107 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 227 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 558 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 419 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 506 of file MueLu_Ifpack2Smoother_def.hpp.
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Definition at line 645 of file MueLu_Ifpack2Smoother_def.hpp.
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Constructor.
The options passed into Ifpack2Smoother are those given in the Ifpack2 user's manual.
| type | smoother type |
| list | options for the particular smoother (e.g., fill factor or damping parameter) |
Here is how to select some of the most common smoothers.
type = point relaxation stand-alonerelaxation: type = Gauss-Seidelrelaxation: damping factortype = point relaxation stand-alonerelaxation: type = symmetric Gauss-Seidelrelaxation: damping factortype = Chebyshevchebyshev: ratio eigenvaluechebyshev: min eigenvaluechebyshev: max eigenvaluechebyshev: degreechebyshev: zero starting solution (defaults to true)type = ILUfact: level-of-fillSee also Ifpack2::Relaxation, Ifpack2::Chebyshev, or Ifpack2::ILUT.
Definition at line 140 of file MueLu_Ifpack2Smoother_decl.hpp.
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ifpack2-specific key phrase that denote smoother type
Definition at line 230 of file MueLu_Ifpack2Smoother_decl.hpp.
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overlap when using the smoother in additive Schwarz mode
Definition at line 233 of file MueLu_Ifpack2Smoother_decl.hpp.
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pointer to Ifpack2 preconditioner object
Definition at line 236 of file MueLu_Ifpack2Smoother_decl.hpp.
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matrix, used in apply if solving residual equation
Definition at line 239 of file MueLu_Ifpack2Smoother_decl.hpp.