Stokhos_DiagEpetraOp.hpp

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// @HEADER
// *****************************************************************************
//                           Stokhos Package
//
// Copyright 2009 NTESS and the Stokhos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef STOKHOS_DIAG_EPETRA_OP_HPP
#define STOKHOS_DIAG_EPETRA_OP_HPP

#include "Teuchos_RCP.hpp"
#include "Teuchos_Array.hpp"
#include "Teuchos_Time.hpp"

#include "Epetra_Operator.h"
#include "Epetra_Map.h"
#include "Epetra_Comm.h"
#include "Epetra_MultiVector.h"
#include "Stokhos_OrthogPolyBasis.hpp"
#include "Stokhos_Sparse3Tensor.hpp"
#include "Stokhos_VectorOrthogPoly.hpp"
#include "Stokhos_VectorOrthogPolyTraitsEpetra.hpp"

namespace Stokhos {
    
  class DiagEpetraOp : public Epetra_Operator {
      
  public:

    DiagEpetraOp(
      const Teuchos::RCP<const Epetra_Map>& domain_base_map_,
      const Teuchos::RCP<const Epetra_Map>& range_base_map_,
      const Teuchos::RCP<const Epetra_Map>& domain_sg_map_,
      const Teuchos::RCP<const Epetra_Map>& range_sg_map_,
      const Teuchos::RCP<const Stokhos::OrthogPolyBasis<int,double> >& sg_basis,
      const Teuchos::RCP<const Stokhos::Sparse3Tensor<int,double> >& Cijk,
      const Teuchos::RCP<Stokhos::EpetraOperatorOrthogPoly >& ops);
    
    virtual ~DiagEpetraOp();

    virtual void 
    reset(const Teuchos::RCP<Stokhos::EpetraOperatorOrthogPoly >& ops);

    virtual Teuchos::RCP<const Stokhos::EpetraOperatorOrthogPoly >
    getOperatorBlocks() const;

    virtual Teuchos::RCP< Stokhos::EpetraOperatorOrthogPoly >
    getOperatorBlocks();
    
    virtual int SetUseTranspose(bool UseTranspose);
    
    virtual int Apply(std::vector< Teuchos::RCP< const Epetra_CrsMatrix> >& sg_J_all, std::vector< Teuchos::RCP< Epetra_CrsMatrix> >& sg_Kkk_all) const;

    virtual int ApplyInverse(const Epetra_MultiVector& X, 
                             Epetra_MultiVector& Y) const;
    
    virtual double NormInf() const;
    
    virtual const char* Label () const;
  
    virtual bool UseTranspose() const;
    
    virtual bool HasNormInf() const;

    virtual const Epetra_Comm & Comm() const;

    virtual const Epetra_Map& OperatorDomainMap () const;

    virtual const Epetra_Map& OperatorRangeMap () const;

    virtual const double ApplyTime() const{
      return this->ApplyTimer->totalElapsedTime(false);};

  private:
    
    DiagEpetraOp(const DiagEpetraOp&);
    
    DiagEpetraOp& operator=(const DiagEpetraOp&);
    
  protected:
    
    std::string label;
    
    Teuchos::RCP<const Epetra_Map> domain_base_map;

    Teuchos::RCP<const Epetra_Map> range_base_map;

    Teuchos::RCP<const Epetra_Map> domain_sg_map;

    Teuchos::RCP<const Epetra_Map> range_sg_map;

    Teuchos::RCP<const Stokhos::OrthogPolyBasis<int,double> > sg_basis;

    Teuchos::RCP<const Stokhos::Sparse3Tensor<int,double> > Cijk;

    Teuchos::RCP<Stokhos::EpetraOperatorOrthogPoly > block_ops;

    bool useTranspose;

    int expansion_size;

    int num_blocks;

    mutable Teuchos::Array< Teuchos::RCP<const Epetra_MultiVector> > input_block;

    mutable Teuchos::Array< Teuchos::RCP<Epetra_MultiVector> > result_block;

    mutable Teuchos::RCP<Epetra_MultiVector> tmp;

    mutable Teuchos::RCP<Epetra_MultiVector> tmp_trans;

    Teuchos::RCP<Teuchos::Time> ApplyTimer;

  }; // class DiagEpetraOp
  
} // namespace Stokhos

#endif // STOKHOS_DIAG_EPETRA_OP_HPP