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Teko_DiagonallyScaledPreconditionerFactory.hpp
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6// Teko: A package for block and physics based preconditioning
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46
47#ifndef __Teko_DiagonallyScaledPreconditionerFactory_hpp__
48#define __Teko_DiagonallyScaledPreconditionerFactory_hpp__
49
50#include "Teuchos_Time.hpp"
51
52// Teko includes
53#include "Teko_PreconditionerFactory.hpp"
54
55namespace Teko {
56
84 : public virtual Teko::PreconditionerFactory {
85public:
86 typedef enum {COLUMN_SCALING, ROW_SCALING} ScalingType;
87
90
95 DiagonallyScaledPreconditionerFactory(const Teuchos::RCP<Teko::InverseFactory> & invFactory,ScalingType columnScaling=COLUMN_SCALING,DiagonalType diagonalType=AbsRowSum);
96
99
113 virtual LinearOp buildPreconditionerOperator(LinearOp & lo,PreconditionerState & state) const;
114
116
117
128 virtual void initializeFromParameterList(const Teuchos::ParameterList & settings);
129
131
132private:
133 Teuchos::RCP<Teko::InverseFactory> invFactory_;
134 ScalingType scalingType_;
135 DiagonalType diagonalType_;
136};
137
138} // end namespace Teko
139
140#endif
DiagonalType
Type describing the type of diagonal to construct.
@ AbsRowSum
Specifies that the diagonal entry is .
Using an absolute row sum approximation of the matrix this factory creates an inverse using the expli...
DiagonallyScaledPreconditionerFactory()
Default constructor, for use with the AutoClone class.
virtual ~DiagonallyScaledPreconditionerFactory()
default destructor: prints out diagnostic string
virtual void initializeFromParameterList(const Teuchos::ParameterList &settings)
This function builds the internals of the preconditioner factory from a parameter list.
virtual LinearOp buildPreconditionerOperator(LinearOp &lo, PreconditionerState &state) const
Function that is called to build the preconditioner for the linear operator that is passed in.
Abstract class which block preconditioner factories in Teko should be based on.
An implementation of a state object preconditioners.