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// ShyLU: Hybrid preconditioner package
// Copyright 2012 Sandia Corporation
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/** \file IQRSolver.h
\brief Encapsulates the IQR inexact solver functionality
\author Radu Popescu
*/
#ifndef IQRSOLVER_H_
#define IQRSOLVER_H_
#include <vector>
#include <Epetra_BlockMap.h>
#include <Epetra_MultiVector.h>
#include <Epetra_Operator.h>
#include <shylu_internal_gmres_tools.h>
#include <shylu_internal_gmres.h>
#include <Ifpack_Preconditioner.h>
#include <Teuchos_ParameterList.hpp>
#include <Teuchos_RCP.hpp>
#include <shylu_probing_operator.h>
namespace IQR {
class IQRSolver {
public:
// Public type definitions
typedef IQR::GMRESManager<Epetra_BlockMap,
Epetra_MultiVector,
std::vector<std::vector<double> >,
std::vector<double> > GMRESStateManager;
// Public constructor and destructor
IQRSolver(const Teuchos::ParameterList& pList);
virtual ~IQRSolver();
// Public methods
int Solve(const ShyLU_Probing_Operator& S,
const Epetra_MultiVector& B,
Epetra_MultiVector & X);
private:
// Private methods
int Compute(const ShyLU_Probing_Operator& S,
const Epetra_MultiVector& B,
Epetra_MultiVector & X);
// Private data
Teuchos::RCP<GMRESStateManager> gmresStateManager_;
Teuchos::RCP<Ifpack_Preconditioner> prec_;
bool isComputed_;
double krylovDim_;
int numIter_;
bool doScaling_;
bool useFullIQR_;
std::string precType_;
std::string precAmesosType_;
};
} /* namespace IQR */
#endif /* IQRSOLVER_H_ */
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