Ifpack2_Preconditioner.hpp

Go to the documentation of this file.

/*@HEADER
// ***********************************************************************
//
//       Ifpack2: Templated Object-Oriented Algebraic Preconditioner Package
//                 Copyright (2009) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/


#ifndef IFPACK2_PRECONDITIONER_HPP
#define IFPACK2_PRECONDITIONER_HPP

#include "Ifpack2_ConfigDefs.hpp"
#include "Tpetra_Operator.hpp"
#include "Tpetra_RowMatrix.hpp"
#include "Teuchos_ParameterList.hpp"
#include "Teuchos_ScalarTraits.hpp"
#include <iostream>

namespace Ifpack2 {

template<class Scalar =
           Tpetra::Operator<>::scalar_type,
         class LocalOrdinal =
           typename Tpetra::Operator<Scalar>::local_ordinal_type,
         class GlobalOrdinal =
           typename Tpetra::Operator<Scalar, LocalOrdinal>::global_ordinal_type,
         class Node =
           typename Tpetra::Operator<Scalar, LocalOrdinal, GlobalOrdinal>::node_type>
class Preconditioner :
  virtual public Tpetra::Operator<Scalar, LocalOrdinal, GlobalOrdinal, Node> {
public:
  typedef typename Teuchos::ScalarTraits<Scalar>::magnitudeType magnitude_type;

  virtual ~Preconditioner(){}



  virtual Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >
  getDomainMap () const = 0;

  virtual Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >
  getRangeMap () const = 0;

  virtual void
  apply (const Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &X,
         Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> &Y,
         Teuchos::ETransp mode = Teuchos::NO_TRANS,
         Scalar alpha = Teuchos::ScalarTraits<Scalar>::one(),
         Scalar beta = Teuchos::ScalarTraits<Scalar>::zero()) const = 0;

  virtual void setParameters (const Teuchos::ParameterList& List) = 0;

  virtual bool supportsZeroStartingSolution () { return false; };

  virtual void setZeroStartingSolution (bool zeroStartingSolution) { TEUCHOS_ASSERT(false); };

  virtual void initialize() = 0;

  virtual bool isInitialized() const = 0;

  virtual void compute() = 0;

  virtual bool isComputed() const = 0;

  virtual Teuchos::RCP<const Tpetra::RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> > getMatrix() const = 0;

  virtual int getNumInitialize() const = 0;

  virtual int getNumCompute() const = 0;

  virtual int getNumApply() const = 0;

  virtual double getInitializeTime() const = 0;

  virtual double getComputeTime() const = 0;

  virtual double getApplyTime() const = 0;
};

}//namespace Ifpack2

#endif // IFPACK2_PRECONDITIONER_HPP