Teko_TpetraHelpers.hpp

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//      Teko: A package for block and physics based preconditioning
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#ifndef __Teko_TpetraHelpers_hpp__
#define __Teko_TpetraHelpers_hpp__

// stl includes
#include <string>

// Epetra includes
#include "Epetra_Operator.h"
#include "Epetra_CrsMatrix.h"
#include "Epetra_MultiVector.h"

// Teuchos includes
#include "Teuchos_RCP.hpp"

// Thyra includes
#include "Thyra_VectorBase.hpp"
#include "Thyra_TpetraMultiVector.hpp"
#include "Thyra_DefaultSpmdMultiVector.hpp"

// Tpetra
#include "Teko_ConfigDefs.hpp"
#include "Tpetra_Map.hpp"
#include "Tpetra_Vector.hpp"
#include "Tpetra_CrsMatrix.hpp"

namespace Teko {

typedef Teuchos::RCP<const Thyra::LinearOpBase<double> > LinearOp;

namespace TpetraHelpers {

void fillDefaultSpmdMultiVector(Teuchos::RCP<Thyra::TpetraMultiVector<ST,LO,GO,NT> > & spmdMV,
                                Teuchos::RCP<Tpetra::MultiVector<ST,LO,GO,NT> > & tpetraMV);

const Teuchos::RCP<const Thyra::LinearOpBase<ST> > thyraDiagOp(const Teuchos::RCP<const Tpetra::Vector<ST,LO,GO,NT> > & tv,
                                                                   const Tpetra::Map<LO,GO,NT> & map,const std::string & lbl="ANYM");

const Teuchos::RCP<Thyra::LinearOpBase<ST> > thyraDiagOp(const Teuchos::RCP<Tpetra::Vector<ST,LO,GO,NT> > & tv,
                                                             const Tpetra::Map<LO,GO,NT> & map,const std::string & lbl="ANYM");

void identityRowIndices(const Tpetra::Map<LO,GO,NT> & rowMap, const Tpetra::CrsMatrix<ST,LO,GO,NT> & mat,std::vector<GO> & outIndices);

void zeroMultiVectorRowIndices(Tpetra::MultiVector<ST,LO,GO,NT> & mv,const std::vector<GO> & zeroIndices);

bool isTpetraLinearOp(const Teko::LinearOp & op);

Teuchos::RCP<const Tpetra::CrsMatrix<ST,LO,GO,NT> > getTpetraCrsMatrix(const Teko::LinearOp & op, ST *scalar, bool *transp);

Teuchos::RCP<const Tpetra::CrsMatrix<ST,LO,GO,NT> > epetraCrsMatrixToTpetra(const Teuchos::RCP<const Epetra_CrsMatrix> A_e, const Teuchos::RCP<const Teuchos::Comm<int> > comm);

Teuchos::RCP<Tpetra::CrsMatrix<ST,LO,GO,NT> > nonConstEpetraCrsMatrixToTpetra(const Teuchos::RCP<Epetra_CrsMatrix> A_e, const Teuchos::RCP<const Teuchos::Comm<int> > comm);

Teuchos::RCP<const Tpetra::Map<LO,GO,NT> > epetraMapToTpetra(const Epetra_Map eMap, const Teuchos::RCP<const Teuchos::Comm<int> > comm);

class ZeroedOperator : public Tpetra::Operator<ST,LO,GO,NT> {
public:
   ZeroedOperator(const std::vector<GO> & zeroIndices,const Teuchos::RCP<const Tpetra::Operator<ST,LO,GO,NT> > & op);



   virtual ~ZeroedOperator() {}

   int SetUseTranspose(bool /* useTranspose */ ) { return -1;}

   void apply(const Tpetra::MultiVector<ST,LO,GO,NT> & X, Tpetra::MultiVector<ST,LO,GO,NT> & Y, Teuchos::ETransp mode=Teuchos::NO_TRANS, ST alpha=Teuchos::ScalarTraits< ST >::one(), ST beta=Teuchos::ScalarTraits< ST >::zero()) const;

   void applyInverse(const Tpetra::MultiVector<ST,LO,GO,NT>& /* X */, Tpetra::MultiVector<ST,LO,GO,NT>& /* Y */, Teuchos::ETransp /* mode */=Teuchos::NO_TRANS, ST /* alpha */=Teuchos::ScalarTraits< ST >::one(), ST /* beta */=Teuchos::ScalarTraits< ST >::zero()) const
   { TEUCHOS_TEST_FOR_EXCEPTION(true,std::runtime_error,"Can't call applyInverse on a ZeroedOperator"); }

   double NormInf() const { return -1.0; }

   bool UseTranspose() const {return false;}

   bool HasNormInf() const {return false;}

   Teuchos::RCP<const Tpetra::Map<LO,GO,NT> > getDomainMap() const {return tpetraOp_->getDomainMap(); }

   Teuchos::RCP<const Tpetra::Map<LO,GO,NT> > getRangeMap() const {return tpetraOp_->getRangeMap(); }


protected:
   std::vector<GO> zeroIndices_;
   const Teuchos::RCP<const Tpetra::Operator<ST,LO,GO,NT> > tpetraOp_;
};

} // end namespace TpetraHelpers
} // end namespace Teko

#endif