Thyra_MPIMultiVectorBaseDecl.hpp

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//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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#ifndef THYRA_MPI_MULTI_VECTOR_BASE_DECL_HPP
#define THYRA_MPI_MULTI_VECTOR_BASE_DECL_HPP

#include "Thyra_MultiVectorDefaultBaseDecl.hpp"
#include "Thyra_SingleScalarEuclideanLinearOpBaseDecl.hpp"
#include "Teuchos_BLAS.hpp"

namespace Thyra {

template<class Scalar> class MPIVectorSpaceBase;

template<class Scalar>
class MPIMultiVectorBase
  : virtual public MultiVectorDefaultBase<Scalar>
  , virtual public SingleScalarEuclideanLinearOpBase<Scalar>
{
public:

  using SingleScalarEuclideanLinearOpBase<Scalar>::euclideanApply;
  using SingleScalarEuclideanLinearOpBase<Scalar>::apply;
  using MultiVectorDefaultBase<Scalar>::applyOp;


  MPIMultiVectorBase();



  virtual Teuchos::RefCountPtr<const MPIVectorSpaceBase<Scalar> > mpiSpace() const = 0;

  virtual void getLocalData( Scalar **localValues, Index *leadingDim ) = 0;

  virtual void commitLocalData( Scalar *localValues ) = 0;

  virtual void getLocalData( const Scalar **localValues, Index *leadingDim ) const = 0;

  virtual void freeLocalData( const Scalar *localValues ) const = 0;



  Teuchos::RefCountPtr< const ScalarProdVectorSpaceBase<Scalar> > rangeScalarProdVecSpc() const;



  void apply(
    const ETransp                     M_trans
    ,const MultiVectorBase<Scalar>    &X
    ,MultiVectorBase<Scalar>          *Y
    ,const Scalar                     alpha
    ,const Scalar                     beta
    ) const;


  void applyOp(
    const RTOpPack::RTOpT<Scalar>   &primary_op
    ,const int                      num_multi_vecs
    ,const MultiVectorBase<Scalar>* multi_vecs[]
    ,const int                      num_targ_multi_vecs
    ,MultiVectorBase<Scalar>*       targ_multi_vecs[]
    ,RTOpPack::ReductTarget*        reduct_objs[]
    ,const Index                    primary_first_ele
    ,const Index                    primary_sub_dim
    ,const Index                    primary_global_offset
    ,const Index                    secondary_first_ele
    ,const Index                    secondary_sub_dim
    ) const;
  void getSubMultiVector(
    const Range1D                       &rowRng
    ,const Range1D                      &colRng
    ,RTOpPack::SubMultiVectorT<Scalar>  *sub_mv
    ) const;
  void freeSubMultiVector( RTOpPack::SubMultiVectorT<Scalar>* sub_mv ) const;
  void getSubMultiVector(
    const Range1D                                &rowRng
    ,const Range1D                               &colRng
    ,RTOpPack::MutableSubMultiVectorT<Scalar>    *sub_mv
    );
  void commitSubMultiVector( RTOpPack::MutableSubMultiVectorT<Scalar>* sub_mv );

protected:


  bool opSupported(ETransp M_trans) const;

  void euclideanApply(
    const ETransp                     M_trans
    ,const MultiVectorBase<Scalar>    &X
    ,MultiVectorBase<Scalar>          *Y
    ,const Scalar                     alpha
    ,const Scalar                     beta
    ) const;



  virtual void updateMpiSpace();

  Range1D validateRowRange( const Range1D& rowRng ) const;

  Range1D validateColRange( const Range1D& rowCol ) const;

  
private:
  
  // ///////////////////////////////////////
  // Private data members
  
  mutable bool in_applyOp_;

  mutable Teuchos::BLAS<int,Scalar> blas_;

  // cached
  Index  globalDim_;
  Index  localOffset_;
  Index  localSubDim_;
  Index  numCols_;

  
}; // end class MPIMultiVectorBase

} // end namespace Thyra

#endif // THYRA_MPI_MULTI_VECTOR_BASE_DECL_HPP

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