Stokhos_MatrixFreeOperator.hpp

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#ifndef STOKHOS_MATRIX_FREE_OPERATOR_HPP
#define STOKHOS_MATRIX_FREE_OPERATOR_HPP
 
#include "Stokhos_SGOperator.hpp"
#include "EpetraExt_MultiComm.h"
#include "Stokhos_OrthogPolyBasis.hpp"
#include "Stokhos_EpetraSparse3Tensor.hpp"
#include "Epetra_Map.h"
#include "Epetra_Import.h"
#include "Teuchos_ParameterList.hpp"
#include "Teuchos_Array.hpp"
 
namespace Stokhos {
 
  class MatrixFreeOperator : public Stokhos::SGOperator {
 
  public:
 
    MatrixFreeOperator(
      const Teuchos::RCP<const EpetraExt::MultiComm>& sg_comm,
      const Teuchos::RCP<const Stokhos::OrthogPolyBasis<int,double> >& sg_basis,
      const Teuchos::RCP<const Stokhos::EpetraSparse3Tensor>& epetraCijk,
      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<Teuchos::ParameterList>& params);
 
    virtual ~MatrixFreeOperator();
 
    double countApplyFlops() const;
 
 
    virtual void setupOperator(
      const Teuchos::RCP<Stokhos::EpetraOperatorOrthogPoly >& poly);
 
    virtual Teuchos::RCP< Stokhos::EpetraOperatorOrthogPoly >
    getSGPolynomial();
 
    virtual Teuchos::RCP<const Stokhos::EpetraOperatorOrthogPoly >
    getSGPolynomial() const;
 
 
 
    virtual int SetUseTranspose(bool UseTranspose);
 
    virtual int Apply(const Epetra_MultiVector& Input,
                      Epetra_MultiVector& Result) 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;
 
 
  private:
 
    MatrixFreeOperator(const MatrixFreeOperator&);
 
    MatrixFreeOperator& operator=(const MatrixFreeOperator&);
 
  protected:
 
    std::string label;
 
    Teuchos::RCP<const EpetraExt::MultiComm> sg_comm;
 
    Teuchos::RCP<const Stokhos::OrthogPolyBasis<int,double> > sg_basis;
 
    Teuchos::RCP<const Stokhos::EpetraSparse3Tensor> epetraCijk;
 
    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;
 
    bool is_stoch_parallel;
 
    Teuchos::RCP<Epetra_Map> global_col_map;
 
    Teuchos::RCP<Epetra_Map> global_col_map_trans;
 
    Teuchos::RCP<const Epetra_BlockMap> stoch_col_map;
 
    Teuchos::RCP<Epetra_Import> col_importer;
 
    Teuchos::RCP<Epetra_Import> col_importer_trans;
 
    typedef Stokhos::Sparse3Tensor<int,double> Cijk_type;
 
    Teuchos::RCP<const Cijk_type> Cijk;
 
    Teuchos::RCP<Stokhos::EpetraOperatorOrthogPoly > block_ops;
 
    bool scale_op;
 
    bool include_mean;
 
    bool only_use_linear;
 
    bool useTranspose;
 
    bool use_block_apply;
 
    int expansion_size;
 
    int num_blocks;
 
    int max_num_mat_vec;
 
    mutable Teuchos::RCP<Epetra_MultiVector> input_col;
 
    mutable Teuchos::RCP<Epetra_MultiVector> input_col_trans;
 
    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;
 
    Cijk_type::k_iterator k_begin;
 
    Cijk_type::k_iterator k_end;
 
  }; // class MatrixFreeOperator
 
} // namespace Stokhos
 
#endif // STOKHOS_MATRIX_FREE_OPERATOR_HPP