MueLu_StratimikosSmoother_decl.hpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// 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
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
//
// @HEADER
#ifndef MUELU_STRATIMIKOSSMOOTHER_DECL_HPP
#define MUELU_STRATIMIKOSSMOOTHER_DECL_HPP
 
#include <Teuchos_ParameterList.hpp>
 
#include <Xpetra_CrsMatrixWrap_fwd.hpp>
#include <Xpetra_Matrix_fwd.hpp>
 
#include "MueLu_ConfigDefs.hpp"
#include "MueLu_StratimikosSmoother_fwd.hpp"
 
#if defined(HAVE_MUELU_STRATIMIKOS) && defined(HAVE_MUELU_THYRA)
 
#include <Tpetra_CrsMatrix.hpp>
 
#include "MueLu_FactoryBase_fwd.hpp"
#include "MueLu_Level_fwd.hpp"
#include "MueLu_SmootherPrototype.hpp"
#include "MueLu_Utilities_fwd.hpp"
 
#include <Thyra_LinearOpWithSolveBase.hpp>
 
 
namespace MueLu {

 
  template <class Scalar = SmootherPrototype<>::scalar_type,
            class LocalOrdinal = typename SmootherPrototype<Scalar>::local_ordinal_type,
            class GlobalOrdinal = typename SmootherPrototype<Scalar, LocalOrdinal>::global_ordinal_type,
            class Node = typename SmootherPrototype<Scalar, LocalOrdinal, GlobalOrdinal>::node_type>
  class StratimikosSmoother : public SmootherPrototype<Scalar,LocalOrdinal,GlobalOrdinal,Node> {
#undef MUELU_STRATIMIKOSSMOOTHER_SHORT
#include "MueLu_UseShortNames.hpp"
 
  public:


    //TODO: update doc for Stratimikos.
 
#ifndef _MSC_VER
    // Avoid error C3772: invalid friend template declaration
    template<class Scalar2, class LocalOrdinal2, class GlobalOrdinal2, class Node2>
    friend class StratimikosSmoother;
#endif
 
    StratimikosSmoother(const std::string type, const Teuchos::ParameterList& paramList = Teuchos::ParameterList()) {
      TEUCHOS_TEST_FOR_EXCEPTION(true, Exceptions::RuntimeError, "Stratimikos only works for Scalar=double.")
    };

    virtual ~StratimikosSmoother() = default;

 
    void SetParameterList(const Teuchos::ParameterList& paramList) {};


 
    void DeclareInput(Level &currentLevel) const {};




    void Setup(Level &currentLevel) {};

    void Apply(MultiVector& X, const MultiVector& B, bool InitialGuessIsZero = false) const {};



 
    RCP<SmootherPrototype> Copy() const { return Teuchos::null; };




    std::string description() const { return std::string(""); };

    //using MueLu::Describable::describe; // overloading, not hiding
    //void describe(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const
    void print(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const {};


    // RCP<Ifpack2::Preconditioner<Scalar,LocalOrdinal,GlobalOrdinal,Node> > getPreconditioner(){return prec_;}

    size_t getNodeSmootherComplexity() const { return Teuchos::OrdinalTraits<size_t>::invalid(); };
 
  }; // class StratimikosSmoother
 
 
  template<class LocalOrdinal, class GlobalOrdinal, class Node>
  struct StratimikosSmoother<double,LocalOrdinal,GlobalOrdinal,Node> : public SmootherPrototype<double,LocalOrdinal,GlobalOrdinal,Node>  {
    typedef double Scalar;
#undef MUELU_STRATIMIKOSSMOOTHER_SHORT
#include "MueLu_UseShortNames.hpp"
 
    StratimikosSmoother(const std::string type, const Teuchos::ParameterList& paramList = Teuchos::ParameterList());

    virtual ~StratimikosSmoother() = default;

 
    void SetParameterList(const Teuchos::ParameterList& paramList);


 
    void DeclareInput(Level &currentLevel) const;




    void Setup(Level &currentLevel);

    void Apply(MultiVector& X, const MultiVector& B, bool InitialGuessIsZero = false) const;



 
    RCP<SmootherPrototype> Copy() const;




    std::string description() const;

    //using MueLu::Describable::describe; // overloading, not hiding
    //void describe(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const
    void print(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const;


    // RCP<Ifpack2::Preconditioner<Scalar,LocalOrdinal,GlobalOrdinal,Node> > getPreconditioner(){return prec_;}

    size_t getNodeSmootherComplexity() const;
 
  private:
    void SetupStratimikos           (Level& currentLevel);
    void ExperimentalDropVertConnections(RCP<Matrix> & filteredA, Level& currentLevel);

 
    std::string                         type_;
 
    Teuchos::RCP<Thyra::LinearOpWithSolveBase<Scalar> > solver_;

    RCP<Matrix> A_;
 
    bool recurMgOnFilteredA_ = false;
  }; // class StratimikosSmoother
 
} // namespace MueLu
 
#define MUELU_STRATIMIKOSSMOOTHER_SHORT
#endif // HAVE_MUELU_STRATIMIKOS
#endif // MUELU_STRATIMIKOSSMOOTHER_DECL_HPP