libtrilinos-xpetra-dev 12.10.1-3 / usr / include / trilinos / Xpetra_EpetraVector.hpp

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#ifndef XPETRA_EPETRAVECTOR_HPP
#define XPETRA_EPETRAVECTOR_HPP

/* this file is automatically generated - do not edit (see script/epetra.py) */

#include "Xpetra_EpetraConfigDefs.hpp"

#include "Xpetra_Vector.hpp"
#include "Xpetra_EpetraMultiVector.hpp"
#include "Xpetra_EpetraMap.hpp" //TMP
#include "Xpetra_Utils.hpp"
#include "Xpetra_EpetraImport.hpp"
#include "Xpetra_EpetraExport.hpp"
#include "Xpetra_Exceptions.hpp"

#include <Epetra_Vector.h>

namespace Xpetra {

// TODO: move that elsewhere
template<class GlobalOrdinal, class Node>
Epetra_Vector & toEpetra(Vector<double, int, GlobalOrdinal, Node> &);

template<class GlobalOrdinal, class Node>
const Epetra_Vector & toEpetra(const Vector<double, int, GlobalOrdinal, Node> &);
//

template<class EpetraGlobalOrdinal, class Node>
class EpetraVectorT
    : public virtual Vector<double,int,EpetraGlobalOrdinal, Node>, public EpetraMultiVectorT<EpetraGlobalOrdinal, Node>
{

  typedef double Scalar;
  typedef int LocalOrdinal;
  typedef EpetraGlobalOrdinal GlobalOrdinal;

public:

  //! Compute 1-norm of each vector in multi-vector.
  void norm1(const Teuchos::ArrayView< Teuchos::ScalarTraits< Scalar >::magnitudeType > &norms) const {  }

  //!
  void norm2(const Teuchos::ArrayView< Teuchos::ScalarTraits< Scalar >::magnitudeType > &norms) const {  }

  //! Compute Inf-norm of each vector in multi-vector.
  void normInf(const Teuchos::ArrayView< Teuchos::ScalarTraits< Scalar >::magnitudeType > &norms) const {  }

  //! Compute mean (average) value of each vector in multi-vector. The outcome of this routine is undefined for non-floating point scalar types (e.g., int).
  void meanValue(const Teuchos::ArrayView< Scalar > &means) const {  }

  //! Replace value, using global (row) index.
  void replaceGlobalValue(GlobalOrdinal globalRow, size_t vectorIndex, const Scalar &value) {  }

  //! Add value to existing value, using global (row) index.
  void sumIntoGlobalValue(GlobalOrdinal globalRow, size_t vectorIndex, const Scalar &value) {  }

  //! Replace value, using local (row) index.
  void replaceLocalValue(LocalOrdinal myRow, size_t vectorIndex, const Scalar &value) {  }

  //! Add value to existing value, using local (row) index.
  void sumIntoLocalValue(LocalOrdinal myRow, size_t vectorIndex, const Scalar &value) {  }

  //! Compute the dot product of each corresponding pair of vectors (columns) in A and B.
  void dot(const MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &A, const Teuchos::ArrayView< Scalar > &dots) const {  }

  //! @name Constructor/Destructor Methods
  //@{

  //! Sets all vector entries to zero.
  explicit EpetraVectorT(const RCP< const Map< LocalOrdinal, GlobalOrdinal, Node > > &map, bool zeroOut=true) : EpetraMultiVectorT<GlobalOrdinal, Node>(map,1,zeroOut) {};

  // Commenting out since no definition provided in cpp.
  //! Vector copy constructor.
  // EpetraVectorT(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &source);

  //! Destructor.
  virtual ~EpetraVectorT() { }

  //@}

  //! @name Post-construction modification routines
  //@{

  //! Replace current value at the specified location with specified value.
  void replaceGlobalValue(GlobalOrdinal globalRow, const Scalar &value) {};

  //! Adds specified value to existing value at the specified location.
  void sumIntoGlobalValue(GlobalOrdinal globalRow, const Scalar &value) {};

  //! Replace current value at the specified location with specified values.
  void replaceLocalValue(LocalOrdinal myRow, const Scalar &value) {};

  //! Adds specified value to existing value at the specified location.
  void sumIntoLocalValue(LocalOrdinal myRow, const Scalar &value) {};

  //@}

  //! @name Mathematical methods
  //@{

  //! Computes dot product of this Vector against input Vector x.
  Scalar dot(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &a) const { return Teuchos::ScalarTraits<Scalar>::zero(); };

  //! Return 1-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType norm1() const { return Teuchos::ScalarTraits<Scalar>::magnitude(Teuchos::ScalarTraits<Scalar>::zero());};

  //! Compute 2-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType norm2() const {return Teuchos::ScalarTraits<Scalar>::magnitude(Teuchos::ScalarTraits<Scalar>::zero());};

  //! Compute Inf-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType normInf() const {return Teuchos::ScalarTraits<Scalar>::magnitude(Teuchos::ScalarTraits<Scalar>::zero());};

  //! Compute Weighted 2-norm (RMS Norm) of this Vector.
  //Teuchos::ScalarTraits< Scalar >::magnitudeType normWeighted(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &weights) const;

  //! Compute mean (average) value of this Vector.
  Scalar meanValue() const {return Teuchos::ScalarTraits<Scalar>::zero();};

  //@}

  //! @name Overridden from Teuchos::Describable
  //@{

  //! Return a simple one-line description of this object.
  std::string description() const { return std::string(""); }

  //! Print the object with some verbosity level to an FancyOStream object.
  void describe(Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel=Teuchos::Describable::verbLevel_default) const {};

  //@}

  //! @name Xpetra specific
  //@{

  //! EpetraMultiVectorT constructor to wrap a Epetra_Vector object
  EpetraVectorT(const Teuchos::RCP<Epetra_Vector> &vec) : EpetraMultiVectorT<GlobalOrdinal, Node>(vec) { // TODO: removed const of Epetra::Vector
    TEUCHOS_TEST_FOR_EXCEPTION(true, Xpetra::Exceptions::RuntimeError,
      "Xpetra::EpetraVector only available for GO=int or GO=long long with EpetraNode (Serial or OpenMP depending on configuration)");
  }

  //! Get the underlying Epetra vector
  Epetra_Vector * getEpetra_Vector() const { return NULL; /*return (*this->EpetraMultiVectorT<GlobalOrdinal, Node>::getEpetra_MultiVector())(0);*/ }
  //RCP<Epetra_Vector> getEpetra_Vector() const { return this->EpetraMultiVectorT<GlobalOrdinal>::getEpetra_MultiVector()->getVectorNonConst(0); }

  //! This constructor creates a Vector which is a view of column j of the MultiVector 'mv'.
  //! It implements the logic of MultiVector::getVector/getVectorNonConst() for Epetra MultiVector.
  //! The newly created Xpetra::EpetraVectorT will remain valid after the disappearance of the references to 'mv' in user code.
  EpetraVectorT(const RCP<Epetra_MultiVector> &mv, size_t j) : EpetraMultiVectorT<GlobalOrdinal, Node>(mv) {};

#ifdef HAVE_XPETRA_KOKKOS_REFACTOR
  typedef typename Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>::dual_view_type dual_view_type;

  typename dual_view_type::t_host_um getHostLocalView () const {
    return this->EpetraMultiVectorT<GlobalOrdinal,Node>::getHostLocalView();
  }

  typename dual_view_type::t_dev_um getDeviceLocalView() const {
    throw std::runtime_error("Epetra does not support device views!");
    typename dual_view_type::t_dev ret;
    return ret; // make compiler happy
  }

  /// \brief Return an unmanaged non-const view of the local data on a specific device.
  /// \tparam TargetDeviceType The Kokkos Device type whose data to return.
  ///
  /// \warning DO NOT USE THIS FUNCTION! There is no reason why you are working directly
  ///          with the Xpetra::EpetraVector object. To write a code which is independent
  ///          from the underlying linear algebra package you should always use the abstract class,
  ///          i.e. Xpetra::Vector!
  ///
  /// \warning Be aware that the view on the vector data is non-persisting, i.e.
  ///          only valid as long as the vector does not run of scope!
  template<class TargetDeviceType>
  typename Kokkos::Impl::if_c<
  Kokkos::Impl::is_same<
  typename dual_view_type::t_dev_um::execution_space::memory_space,
  typename TargetDeviceType::memory_space>::value,
  typename dual_view_type::t_dev_um,
  typename dual_view_type::t_host_um>::type
  getLocalView () const {
    return this->MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node >::template getLocalView<TargetDeviceType>();
  }
#endif

  //@}

private:

  // This private member is only used by the constructor EpetraVectorT(const RCP<EpetraMultiVectorT<GlobalOrdinal> > &mv, size_t j). The actual private member holding the Epetra vector (vec_) is in the base class (Xpetra:EpetraMultiVectorT)
  // TODO remove this...
  const RCP<const Epetra_MultiVector> internalRefToBaseMV_;

}; // EpetraVectorT class

// specialization on GO=int and Node=Serial
#ifndef XPETRA_EPETRA_NO_32BIT_GLOBAL_INDICES
template<>
class EpetraVectorT<int, EpetraNode>
: public virtual Vector<double,int,int,EpetraNode>, public EpetraMultiVectorT<int,EpetraNode>
{
  typedef double Scalar;
  typedef int LocalOrdinal;
  typedef int GlobalOrdinal;
  typedef EpetraNode Node;

public:

  using EpetraMultiVectorT<GlobalOrdinal, Node>::dot;          // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::norm1;        // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::norm2;        // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::normInf;      // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::meanValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::replaceGlobalValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::sumIntoGlobalValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::replaceLocalValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::sumIntoLocalValue;    // overloading, not hiding



  //! @name Constructor/Destructor Methods
  //@{

  //! Sets all vector entries to zero.
  explicit EpetraVectorT(const Teuchos::RCP<const Map<int,GlobalOrdinal,Node> > &map, bool zeroOut=true) : EpetraMultiVectorT<GlobalOrdinal, Node>(map,1,zeroOut) { }

  // Commenting out since no definition provided in cpp.
  //! Vector copy constructor.
  // EpetraVectorT(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &source);

  //! Destructor.
  virtual ~EpetraVectorT() { }

  //@}

  //! @name Post-construction modification routines
  //@{

  //! Replace current value at the specified location with specified value.
  void replaceGlobalValue(GlobalOrdinal globalRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::replaceGlobalValue"); this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->ReplaceGlobalValue(globalRow, 0, value); }

  //! Adds specified value to existing value at the specified location.
  void sumIntoGlobalValue(GlobalOrdinal globalRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::sumIntoGlobalValue");this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->SumIntoGlobalValue(globalRow, 0, value); }

  //! Replace current value at the specified location with specified values.
  void replaceLocalValue(LocalOrdinal myRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::replaceLocalValue");this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->ReplaceMyValue(myRow, 0, value); }

  //! Adds specified value to existing value at the specified location.
  void sumIntoLocalValue(LocalOrdinal myRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::sumIntoLocalValue");this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->SumIntoMyValue(myRow, 0, value); }

  //@}

  //! @name Mathematical methods
  //@{

  //! Computes dot product of this Vector against input Vector x.
  Scalar dot(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &a) const {
    XPETRA_MONITOR("EpetraVectorT::dot");

    XPETRA_DYNAMIC_CAST(const EpetraVectorT, a, tA, "This Xpetra::EpetraVectorT method only accept Xpetra::EpetraVectorT as input arguments.");
    //      return getEpetra_Vector()->Dot(*tA.getEpetra_Vector());

    // other way: use the MultiVector Dot instead of VectorDot:
    double r;
    this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->Epetra_MultiVector::Dot(*tA.getEpetra_MultiVector(), &r);
    return r;
  }

  //! Return 1-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType norm1() const { XPETRA_MONITOR("EpetraVectorT::norm1"); Scalar r; this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->Norm1(&r); return r; }

  //! Compute 2-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType norm2() const { XPETRA_MONITOR("EpetraVectorT::norm2"); Scalar r; this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->Norm2(&r); return r; }

  //! Compute Inf-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType normInf() const { XPETRA_MONITOR("EpetraVectorT::normInf"); Scalar r; this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->NormInf(&r); return r; }

  //! Compute Weighted 2-norm (RMS Norm) of this Vector.
  //Teuchos::ScalarTraits< Scalar >::magnitudeType normWeighted(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &weights) const;

  //! Compute mean (average) value of this Vector.
  Scalar meanValue() const {
    XPETRA_MONITOR("EpetraVectorT::meanValue");
    Scalar r;
    this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->MeanValue(&r);
    return r;
  }

  //@}

  //! @name Overridden from Teuchos::Describable
  //@{

  //! Return a simple one-line description of this object.
  std::string description() const {
    XPETRA_MONITOR("EpetraVectorT::description");
    // This implementation come from Epetra_Vector_def.hpp (without modification)
    std::ostringstream oss;
    oss << Teuchos::Describable::description();
    oss << "{length="<<this->getGlobalLength()
                << "}";
    return oss.str();
  }

  //! Print the object with some verbosity level to an FancyOStream object.
  void describe(Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel=Teuchos::Describable::verbLevel_default) const {
    XPETRA_MONITOR("EpetraVectorT::describe");

    if (verbLevel > Teuchos::VERB_NONE) {
      getEpetra_Vector()->Print (out);
    }
  }
  //@}

  //! @name Xpetra specific
  //@{

  //! EpetraMultiVectorT constructor to wrap a Epetra_Vector object
  EpetraVectorT(const Teuchos::RCP<Epetra_Vector> &vec) : EpetraMultiVectorT<GlobalOrdinal, Node>(vec) { } // TODO: removed const of Epetra::Vector

  //! Get the underlying Epetra vector
  Epetra_Vector * getEpetra_Vector() const { return (*this->EpetraMultiVectorT<GlobalOrdinal, Node>::getEpetra_MultiVector())(0); }
  //RCP<Epetra_Vector> getEpetra_Vector() const { return this->EpetraMultiVectorT<GlobalOrdinal>::getEpetra_MultiVector()->getVectorNonConst(0); }

  //! This constructor creates a Vector which is a view of column j of the MultiVector 'mv'.
  //! It implements the logic of MultiVector::getVector/getVectorNonConst() for Epetra MultiVector.
  //! The newly created Xpetra::EpetraVectorT will remain valid after the disappearance of the references to 'mv' in user code.
  EpetraVectorT(const RCP<Epetra_MultiVector> &mv, size_t j)
  : EpetraMultiVectorT<GlobalOrdinal,Node>(rcp((*mv)(j), false)), // view of the vector number j. false == I do not own the data.
    internalRefToBaseMV_(mv)                 // keep an internal reference to the initial MultiVector to avoid desallocation of the view.
    {
    // The view of the internal data of 'mv' is only valid until the destruction of 'mv'.
    // The new vector hold an internal reference to 'mv' in order to keep the view valid after disappearance of 'mv' references in user code.
    // This implements the logic of subArray rcp (as required by the Tpetra interface).
    }

#ifdef HAVE_XPETRA_KOKKOS_REFACTOR
  typedef typename Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>::dual_view_type dual_view_type;

  typename dual_view_type::t_host_um getHostLocalView () const {
    return this->EpetraMultiVectorT<GlobalOrdinal,Node>::getHostLocalView();
  }

  typename dual_view_type::t_dev_um getDeviceLocalView() const {
    throw std::runtime_error("Epetra does not support device views!");
    typename dual_view_type::t_dev ret;
    return ret; // make compiler happy
  }

  /// \brief Return an unmanaged non-const view of the local data on a specific device.
  /// \tparam TargetDeviceType The Kokkos Device type whose data to return.
  ///
  /// \warning DO NOT USE THIS FUNCTION! There is no reason why you are working directly
  ///          with the Xpetra::EpetraVector object. To write a code which is independent
  ///          from the underlying linear algebra package you should always use the abstract class,
  ///          i.e. Xpetra::Vector!
  ///
  /// \warning Be aware that the view on the vector data is non-persisting, i.e.
  ///          only valid as long as the vector does not run of scope!
  template<class TargetDeviceType>
  typename Kokkos::Impl::if_c<
  Kokkos::Impl::is_same<
  typename dual_view_type::t_dev_um::execution_space::memory_space,
  typename TargetDeviceType::memory_space>::value,
  typename dual_view_type::t_dev_um,
  typename dual_view_type::t_host_um>::type
  getLocalView () const {
    return this->MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node >::template getLocalView<TargetDeviceType>();
  }
#endif

  //@}

private:

  // This private member is only used by the constructor EpetraVectorT(const RCP<EpetraMultiVectorT<GlobalOrdinal> > &mv, size_t j). The actual private member holding the Epetra vector (vec_) is in the base class (Xpetra:EpetraMultiVectorT)
  const RCP<const Epetra_MultiVector> internalRefToBaseMV_;
};
#endif

// specialization on GO=long long and Node=Serial
#ifndef XPETRA_EPETRA_NO_64BIT_GLOBAL_INDICES
template<>
class EpetraVectorT<long long, EpetraNode>
: public virtual Vector<double,int,long long,EpetraNode>, public EpetraMultiVectorT<long long,EpetraNode>
{
  typedef double Scalar;
  typedef int LocalOrdinal;
  typedef long long GlobalOrdinal;
  typedef EpetraNode Node;

public:

  using EpetraMultiVectorT<GlobalOrdinal, Node>::dot;          // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::norm1;        // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::norm2;        // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::normInf;      // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::meanValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::replaceGlobalValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::sumIntoGlobalValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::replaceLocalValue;    // overloading, not hiding
  using EpetraMultiVectorT<GlobalOrdinal, Node>::sumIntoLocalValue;    // overloading, not hiding

  //! @name Constructor/Destructor Methods
  //@{

  //! Sets all vector entries to zero.
  explicit EpetraVectorT(const Teuchos::RCP<const Map<int,GlobalOrdinal,Node> > &map, bool zeroOut=true) : EpetraMultiVectorT<GlobalOrdinal, Node>(map,1,zeroOut) { }

  // Commenting out since no definition provided in cpp.
  //! Vector copy constructor.
  // EpetraVectorT(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &source);

  //! Destructor.
  virtual ~EpetraVectorT() { }

  //@}

  //! @name Post-construction modification routines
  //@{

  //! Replace current value at the specified location with specified value.
  void replaceGlobalValue(GlobalOrdinal globalRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::replaceGlobalValue"); this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->ReplaceGlobalValue(globalRow, 0, value); }

  //! Adds specified value to existing value at the specified location.
  void sumIntoGlobalValue(GlobalOrdinal globalRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::sumIntoGlobalValue");this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->SumIntoGlobalValue(globalRow, 0, value); }

  //! Replace current value at the specified location with specified values.
  void replaceLocalValue(LocalOrdinal myRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::replaceLocalValue");this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->ReplaceMyValue(myRow, 0, value); }

  //! Adds specified value to existing value at the specified location.
  void sumIntoLocalValue(LocalOrdinal myRow, const Scalar &value) { XPETRA_MONITOR("EpetraVectorT::sumIntoLocalValue");this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->SumIntoMyValue(myRow, 0, value); }

  //@}

  //! @name Mathematical methods
  //@{

  //! Computes dot product of this Vector against input Vector x.
  Scalar dot(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &a) const {
    XPETRA_MONITOR("EpetraVectorT::dot");

    XPETRA_DYNAMIC_CAST(const EpetraVectorT, a, tA, "This Xpetra::EpetraVectorT method only accept Xpetra::EpetraVectorT as input arguments.");
    //      return getEpetra_Vector()->Dot(*tA.getEpetra_Vector());

    // other way: use the MultiVector Dot instead of VectorDot:
    double r;
    this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->Epetra_MultiVector::Dot(*tA.getEpetra_MultiVector(), &r);
    return r;
  }

  //! Return 1-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType norm1() const { XPETRA_MONITOR("EpetraVectorT::norm1"); Scalar r; this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->Norm1(&r); return r; }

  //! Compute 2-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType norm2() const { XPETRA_MONITOR("EpetraVectorT::norm2"); Scalar r; this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->Norm2(&r); return r; }

  //! Compute Inf-norm of this Vector.
  Teuchos::ScalarTraits< Scalar >::magnitudeType normInf() const { XPETRA_MONITOR("EpetraVectorT::normInf"); Scalar r; this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->NormInf(&r); return r; }

  //! Compute Weighted 2-norm (RMS Norm) of this Vector.
  //Teuchos::ScalarTraits< Scalar >::magnitudeType normWeighted(const Vector< Scalar, LocalOrdinal, GlobalOrdinal, Node > &weights) const;

  //! Compute mean (average) value of this Vector.
  Scalar meanValue() const {
    XPETRA_MONITOR("EpetraVectorT::meanValue");
    Scalar r;
    this->EpetraMultiVectorT<GlobalOrdinal,Node>::getEpetra_MultiVector()->MeanValue(&r);
    return r;
  }

  //@}

  //! @name Overridden from Teuchos::Describable
  //@{

  //! Return a simple one-line description of this object.
  std::string description() const {
    XPETRA_MONITOR("EpetraVectorT::description");
    // This implementation come from Epetra_Vector_def.hpp (without modification)
    std::ostringstream oss;
    oss << Teuchos::Describable::description();
    oss << "{length="<<this->getGlobalLength()
                << "}";
    return oss.str();
  }

  //! Print the object with some verbosity level to an FancyOStream object.
  void describe(Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel=Teuchos::Describable::verbLevel_default) const {
    XPETRA_MONITOR("EpetraVectorT::describe");

    if (verbLevel > Teuchos::VERB_NONE) {
      getEpetra_Vector()->Print (out);
    }
  }
  //@}

  //! @name Xpetra specific
  //@{

  //! EpetraMultiVectorT constructor to wrap a Epetra_Vector object
  EpetraVectorT(const Teuchos::RCP<Epetra_Vector> &vec) : EpetraMultiVectorT<GlobalOrdinal, Node>(vec) { } // TODO: removed const of Epetra::Vector

  //! Get the underlying Epetra vector
  Epetra_Vector * getEpetra_Vector() const { return (*this->EpetraMultiVectorT<GlobalOrdinal, Node>::getEpetra_MultiVector())(0); }
  //RCP<Epetra_Vector> getEpetra_Vector() const { return this->EpetraMultiVectorT<GlobalOrdinal>::getEpetra_MultiVector()->getVectorNonConst(0); }

  //! This constructor creates a Vector which is a view of column j of the MultiVector 'mv'.
  //! It implements the logic of MultiVector::getVector/getVectorNonConst() for Epetra MultiVector.
  //! The newly created Xpetra::EpetraVectorT will remain valid after the disappearance of the references to 'mv' in user code.
  EpetraVectorT(const RCP<Epetra_MultiVector> &mv, size_t j)
  : EpetraMultiVectorT<GlobalOrdinal,Node>(rcp((*mv)(j), false)), // view of the vector number j. false == I do not own the data.
    internalRefToBaseMV_(mv)                 // keep an internal reference to the initial MultiVector to avoid desallocation of the view.
    {
    // The view of the internal data of 'mv' is only valid until the destruction of 'mv'.
    // The new vector hold an internal reference to 'mv' in order to keep the view valid after disappearance of 'mv' references in user code.
    // This implements the logic of subArray rcp (as required by the Tpetra interface).
    }

#ifdef HAVE_XPETRA_KOKKOS_REFACTOR
  typedef typename Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>::dual_view_type dual_view_type;

  typename dual_view_type::t_host_um getHostLocalView () const {
    return this->EpetraMultiVectorT<GlobalOrdinal,Node>::getHostLocalView();
  }

  typename dual_view_type::t_dev_um getDeviceLocalView() const {
    throw std::runtime_error("Epetra does not support device views!");
    typename dual_view_type::t_dev ret;
    return ret; // make compiler happy
  }

  /// \brief Return an unmanaged non-const view of the local data on a specific device.
  /// \tparam TargetDeviceType The Kokkos Device type whose data to return.
  ///
  /// \warning DO NOT USE THIS FUNCTION! There is no reason why you are working directly
  ///          with the Xpetra::EpetraVector object. To write a code which is independent
  ///          from the underlying linear algebra package you should always use the abstract class,
  ///          i.e. Xpetra::Vector!
  ///
  /// \warning Be aware that the view on the vector data is non-persisting, i.e.
  ///          only valid as long as the vector does not run of scope!
  template<class TargetDeviceType>
  typename Kokkos::Impl::if_c<
  Kokkos::Impl::is_same<
  typename dual_view_type::t_dev_um::execution_space::memory_space,
  typename TargetDeviceType::memory_space>::value,
  typename dual_view_type::t_dev_um,
  typename dual_view_type::t_host_um>::type
  getLocalView () const {
    return this->MultiVector< Scalar, LocalOrdinal, GlobalOrdinal, Node >::template getLocalView<TargetDeviceType>();
  }
#endif

  //@}

private:

  // This private member is only used by the constructor EpetraVectorT(const RCP<EpetraMultiVectorT<GlobalOrdinal> > &mv, size_t j). The actual private member holding the Epetra vector (vec_) is in the base class (Xpetra:EpetraMultiVectorT)
  const RCP<const Epetra_MultiVector> internalRefToBaseMV_;
};
#endif

} // Xpetra namespace

#endif // XPETRA_EPETRAVECTOR_HPP