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Teko::LU2x2DiagonalStrategy Class Reference

Strategy for computing $A_00^{-1}$ and $S^{-1}$ in the LU2x2PreconditionerFactory. Uses the diagonal of $A_00$ to build $S$. More...

#include <Teko_LU2x2DiagonalStrategy.hpp>

Inheritance diagram for Teko::LU2x2DiagonalStrategy:
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List of all members.

Public Member Functions

 LU2x2DiagonalStrategy ()
 default Constructor
 LU2x2DiagonalStrategy (const Teuchos::RCP< InverseFactory > &invFA, const Teuchos::RCP< InverseFactory > &invS)
 Constructor to set the inverse factories.
virtual ~LU2x2DiagonalStrategy ()
 Destructor (does nothing)
virtual const Teko::LinearOp getHatInvA00 (const Teko::BlockedLinearOp &A, BlockPreconditionerState &state) const
virtual const Teko::LinearOp getTildeInvA00 (const Teko::BlockedLinearOp &A, BlockPreconditionerState &state) const
virtual const Teko::LinearOp getInvS (const Teko::BlockedLinearOp &A, BlockPreconditionerState &state) const
virtual void initializeFromParameterList (const Teuchos::ParameterList &settings, const InverseLibrary &invLib)
 This function builds the internals of the state from a parameter list.

Protected Member Functions

void initializeState (const Teko::BlockedLinearOp &A, BlockPreconditionerState &state) const

Static Protected Member Functions

static void buildTimers ()

Detailed Description

Strategy for computing $A_00^{-1}$ and $S^{-1}$ in the LU2x2PreconditionerFactory. Uses the diagonal of $A_00$ to build $S$.

This should be paired with a LU2x2PreconditionerFactory, it build the $A_{00}^{-1}$ and $S^{-1}$ operators. where the Shur complement is $ S = -A_{11} + A_{10} \mbox{diag}(A_{00})^{-1} A_{01} $.

Definition at line 66 of file Teko_LU2x2DiagonalStrategy.hpp.


Constructor & Destructor Documentation

Teko::LU2x2DiagonalStrategy::LU2x2DiagonalStrategy ( )

default Constructor

Definition at line 75 of file Teko_LU2x2DiagonalStrategy.cpp.

Teko::LU2x2DiagonalStrategy::LU2x2DiagonalStrategy ( const Teuchos::RCP< InverseFactory > &  invFA,
const Teuchos::RCP< InverseFactory > &  invS 
)

Constructor to set the inverse factories.

Definition at line 82 of file Teko_LU2x2DiagonalStrategy.cpp.

virtual Teko::LU2x2DiagonalStrategy::~LU2x2DiagonalStrategy ( ) [inline, virtual]

Destructor (does nothing)

Definition at line 76 of file Teko_LU2x2DiagonalStrategy.hpp.


Member Function Documentation

const Teko::LinearOp Teko::LU2x2DiagonalStrategy::getHatInvA00 ( const Teko::BlockedLinearOp &  A,
BlockPreconditionerState state 
) const [virtual]

returns the first (approximate) inverse of $A_{00}$

Implements Teko::LU2x2Strategy.

Definition at line 91 of file Teko_LU2x2DiagonalStrategy.cpp.

const Teko::LinearOp Teko::LU2x2DiagonalStrategy::getTildeInvA00 ( const Teko::BlockedLinearOp &  A,
BlockPreconditionerState state 
) const [virtual]

returns the second (approximate) inverse of $A_{00}$

Implements Teko::LU2x2Strategy.

Definition at line 100 of file Teko_LU2x2DiagonalStrategy.cpp.

const Teko::LinearOp Teko::LU2x2DiagonalStrategy::getInvS ( const Teko::BlockedLinearOp &  A,
BlockPreconditionerState state 
) const [virtual]

returns an (approximate) inverse of $S = -A_{11} + A_{10} \mbox{diag}(A_{00})^{-1} A_{01}$

Implements Teko::LU2x2Strategy.

Definition at line 109 of file Teko_LU2x2DiagonalStrategy.cpp.

void Teko::LU2x2DiagonalStrategy::initializeFromParameterList ( const Teuchos::ParameterList &  pl,
const InverseLibrary &  invLib 
) [virtual]

This function builds the internals of the state from a parameter list.

This function builds the internals of the LU 2x2 state from a parameter list. Furthermore, it allows a developer to easily add a factory to the build system.

Parameters:
[in]settingsParameter list to use as the internal settings
[in]invLibInverse library to use for building inverse factory objects
Note:
The default implementation does nothing.

Reimplemented from Teko::LU2x2Strategy.

Definition at line 189 of file Teko_LU2x2DiagonalStrategy.cpp.

void Teko::LU2x2DiagonalStrategy::buildTimers ( ) [static, protected]

Build timers for this type of object.

Definition at line 60 of file Teko_LU2x2DiagonalStrategy.cpp.

void Teko::LU2x2DiagonalStrategy::initializeState ( const Teko::BlockedLinearOp &  A,
BlockPreconditionerState state 
) const [protected]

Initialize the operator's state. This builds the Schur complement and the inverse operators. If the state has already been initialized this method does nothing.

Parameters:
[in]AOperator to intialize with.
[in]stateStorage object for this operator.

Definition at line 116 of file Teko_LU2x2DiagonalStrategy.cpp.


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