Ifpack2_RILUK_decl.hpp

Go to the documentation of this file.

/*@HEADER
// ***********************************************************************
//
//       Ifpack2: Tempated 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_CRSRILUK_DECL_HPP
#define IFPACK2_CRSRILUK_DECL_HPP

#include <Ifpack2_ConfigDefs.hpp>
#include <Ifpack2_Preconditioner.hpp>
#include <Ifpack2_Details_CanChangeMatrix.hpp>
#include <Tpetra_CrsMatrix.hpp>

#include "Ifpack2_ScalingType.hpp"
#include "Ifpack2_IlukGraph.hpp"

namespace Teuchos {
  class ParameterList; // forward declaration
}

namespace Ifpack2 {

template<class MatrixType>
class RILUK:
    virtual public Ifpack2::Preconditioner<typename MatrixType::scalar_type,
                                           typename MatrixType::local_ordinal_type,
                                           typename MatrixType::global_ordinal_type,
                                           typename MatrixType::node_type>,
    virtual public Ifpack2::Details::CanChangeMatrix<Tpetra::RowMatrix<typename MatrixType::scalar_type,
                                                                       typename MatrixType::local_ordinal_type,
                                                                       typename MatrixType::global_ordinal_type,
                                                                       typename MatrixType::node_type> >
{
 public:
  typedef typename MatrixType::scalar_type scalar_type;

  TEUCHOS_DEPRECATED typedef typename MatrixType::scalar_type Scalar;


  typedef typename MatrixType::local_ordinal_type local_ordinal_type;

  TEUCHOS_DEPRECATED typedef typename MatrixType::local_ordinal_type LocalOrdinal;


  typedef typename MatrixType::global_ordinal_type global_ordinal_type;

  TEUCHOS_DEPRECATED typedef typename MatrixType::global_ordinal_type GlobalOrdinal;


  typedef typename MatrixType::node_type node_type;

  TEUCHOS_DEPRECATED typedef typename MatrixType::node_type Node;

  typedef typename Teuchos::ScalarTraits<scalar_type>::magnitudeType magnitude_type;

  TEUCHOS_DEPRECATED typedef typename Teuchos::ScalarTraits<scalar_type>::magnitudeType magnitudeType;

  typedef Tpetra::RowMatrix<scalar_type,
                            local_ordinal_type,
                            global_ordinal_type,
                            node_type> row_matrix_type;

  typedef Tpetra::CrsMatrix<scalar_type,
                            local_ordinal_type,
                            global_ordinal_type,
                            node_type> crs_matrix_type;

  template <class NewMatrixType> friend class RILUK;

  RILUK (const Teuchos::RCP<const row_matrix_type>& A_in);

  RILUK (const Teuchos::RCP<const crs_matrix_type>& A_in);

 private:
  RILUK (const RILUK<MatrixType> & src);

 public:
  template <typename NewMatrixType>
  Teuchos::RCP< RILUK< NewMatrixType > >
  clone (const Teuchos::RCP<const NewMatrixType>& A_newnode) const;

  virtual ~RILUK ();

  void TEUCHOS_DEPRECATED SetRelaxValue (const magnitude_type RelaxValue) {
    RelaxValue_ = RelaxValue;
  }
  void TEUCHOS_DEPRECATED SetAbsoluteThreshold (const magnitude_type Athresh) {
    Athresh_ = Athresh;
  }
  void TEUCHOS_DEPRECATED SetRelativeThreshold (const magnitude_type Rthresh) {
    Rthresh_ = Rthresh;
  }
  void TEUCHOS_DEPRECATED SetOverlapMode (const Tpetra::CombineMode OverlapMode) {
    TEUCHOS_TEST_FOR_EXCEPTION(
      true, std::logic_error, "Ifpack2::RILUK::SetOverlapMode: "
      "RILUK no longer implements overlap on its own.  "
      "Use RILUK with AdditiveSchwarz if you want overlap.");
  }

  void setParameters (const Teuchos::ParameterList& params);

  void initialize ();

  void compute ();

  bool isInitialized () const {
    return isInitialized_;
  }
  bool isComputed () const {
    return isComputed_;
  }

  int getNumInitialize () const {
    return numInitialize_;
  }
  int getNumCompute () const {
    return numCompute_;
  }
  int getNumApply () const {
    return numApply_;
  }

  double getInitializeTime () const {
    return initializeTime_;
  }
  double getComputeTime () const {
    return computeTime_;
  }
  double getApplyTime () const {
    return applyTime_;
  }



  virtual void
  setMatrix (const Teuchos::RCP<const row_matrix_type>& A);




  std::string description () const;




  Teuchos::RCP<const Tpetra::Map<local_ordinal_type,global_ordinal_type,node_type> >
  getDomainMap () const;

  Teuchos::RCP<const Tpetra::Map<local_ordinal_type,global_ordinal_type,node_type> >
  getRangeMap () const;

  void
  apply (const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& X,
         Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& Y,
         Teuchos::ETransp mode = Teuchos::NO_TRANS,
         scalar_type alpha = Teuchos::ScalarTraits<scalar_type>::one (),
         scalar_type beta = Teuchos::ScalarTraits<scalar_type>::zero ()) const;

private:
  void
  multiply (const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& X,
            Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& Y,
            const Teuchos::ETransp mode = Teuchos::NO_TRANS) const;
public:

  magnitude_type TEUCHOS_DEPRECATED computeCondEst (Teuchos::ETransp mode) const;

  virtual magnitude_type TEUCHOS_DEPRECATED
  computeCondEst (CondestType CT = Ifpack2::Cheap,
                  local_ordinal_type MaxIters = 1550,
                  magnitude_type Tol = 1e-9,
                  const Teuchos::Ptr<const row_matrix_type>& Matrix = Teuchos::null);

  magnitude_type getCondEst () const { return Condest_; }

  Teuchos::RCP<const row_matrix_type> getMatrix () const;

  // Attribute access functions

  magnitude_type getRelaxValue () const { return RelaxValue_; }

  magnitude_type getAbsoluteThreshold () const { return Athresh_; }

  magnitude_type getRelativeThreshold () const {return Rthresh_;}

  int getLevelOfFill () const { return LevelOfFill_; }

  Tpetra::CombineMode getOverlapMode () {
    TEUCHOS_TEST_FOR_EXCEPTION(
      true, std::logic_error, "Ifpack2::RILUK::SetOverlapMode: "
      "RILUK no longer implements overlap on its own.  "
      "Use RILUK with AdditiveSchwarz if you want overlap.");
  }

  Tpetra::global_size_t getGlobalNumEntries () const {
    return getL ().getGlobalNumEntries () + getU ().getGlobalNumEntries ();
  }

  Teuchos::RCP<Ifpack2::IlukGraph<Tpetra::CrsGraph<local_ordinal_type,global_ordinal_type,node_type> > > getGraph () const {
    return Graph_;
  }

  const crs_matrix_type& getL () const;

  const Tpetra::Vector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>&
  getD () const;

  const crs_matrix_type& getU () const;

  Teuchos::RCP<const crs_matrix_type> getCrsMatrix () const;

private:
  typedef Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> MV;
  typedef Tpetra::Vector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> vec_type;
  typedef Teuchos::ScalarTraits<scalar_type> STS;
  typedef Teuchos::ScalarTraits<magnitude_type> STM;

  void allocate_L_and_U();
  void initAllValues (const row_matrix_type& A);

  static Teuchos::RCP<const row_matrix_type>
  makeLocalFilter (const Teuchos::RCP<const row_matrix_type>& A);

  Teuchos::RCP<const row_matrix_type> A_;

  Teuchos::RCP<Ifpack2::IlukGraph<Tpetra::CrsGraph<local_ordinal_type,
                                                   global_ordinal_type,
                                                   node_type> > > Graph_;
  Teuchos::RCP<const crs_matrix_type> A_local_crs_;

  Teuchos::RCP<crs_matrix_type> L_;
  Teuchos::RCP<crs_matrix_type> U_;
  Teuchos::RCP<vec_type> D_;

  int LevelOfFill_;

  bool isAllocated_;
  bool isInitialized_;
  bool isComputed_;

  int numInitialize_;
  int numCompute_;
  mutable int numApply_;

  double initializeTime_;
  double computeTime_;
  mutable double applyTime_;

  magnitude_type RelaxValue_;
  magnitude_type Athresh_;
  magnitude_type Rthresh_;

  mutable magnitude_type Condest_;
};

//Set necessary local solve parameters when using ThrustGPU node
namespace detail {
  template<class MatrixType, class NodeType>
  struct setLocalSolveParams{
    static Teuchos::RCP<Teuchos::ParameterList>
    setParams (const Teuchos::RCP<Teuchos::ParameterList>& param) {
      return param;
    }
  };
#if defined(HAVE_KOKKOSCLASSIC_THRUST) && defined(HAVE_KOKKOSCLASSIC_CUSPARSE)
  template<class MatrixType, class Scalar>
  struct setLocalSolveParams<MatrixType, KokkosClassic::ThrustGPUNode>
  {
    static Teuchos::RCP<Teuchos::ParameterList>
    setParams (const Teuchos::RCP<Teuchos::ParameterList>& param) {
      param->sublist ("fillComplete").sublist ("Local Sparse Ops").set ("Prepare Solve", true);
      return param;
    }
  };
#endif
} //end namespace detail

template <class MatrixType>
template <typename NewMatrixType>
Teuchos::RCP<RILUK<NewMatrixType> >
RILUK<MatrixType>::
clone (const Teuchos::RCP<const NewMatrixType>& A_newnode) const
{
  using Teuchos::ParameterList;
  using Teuchos::RCP;
  using Teuchos::rcp;
  typedef typename NewMatrixType::node_type new_node_type;
  typedef RILUK<NewMatrixType> new_riluk_type;

  RCP<new_riluk_type> new_riluk = rcp (new new_riluk_type (A_newnode));

  RCP<ParameterList> plClone = Teuchos::parameterList ();
  plClone = detail::setLocalSolveParams<NewMatrixType, new_node_type>::setParams (plClone);

  RCP<new_node_type> new_node = A_newnode->getNode ();
  new_riluk->L_ = L_->clone (new_node, plClone);
  new_riluk->U_ = U_->clone (new_node, plClone);
  new_riluk->D_ = D_->clone (new_node);

  new_riluk->LevelOfFill_ = LevelOfFill_;

  new_riluk->isAllocated_ = isAllocated_;
  new_riluk->isInitialized_ = isInitialized_;
  new_riluk->isComputed_ = isComputed_;

  new_riluk->numInitialize_ = numInitialize_;
  new_riluk->numCompute_ = numCompute_;
  new_riluk->numApply_ =  numApply_;

  new_riluk->RelaxValue_ = RelaxValue_;
  new_riluk->Athresh_ = Athresh_;
  new_riluk->Rthresh_ = Rthresh_;
  new_riluk->Condest_ = Condest_;

  return new_riluk;
}

} // namespace Ifpack2

#endif /* IFPACK2_CRSRILUK_DECL_HPP */