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Stokhos_MPMeanBasedPreconditioner.hpp
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41
42#ifndef STOKHOS_MP_MEAN_BASED_PRECONDITIONER_HPP
43#define STOKHOS_MP_MEAN_BASED_PRECONDITIONER_HPP
44
45#include "Teuchos_RCP.hpp"
46
48#include "EpetraExt_MultiComm.h"
49#include "Epetra_Map.h"
51#include "Teuchos_ParameterList.hpp"
52#include "Teuchos_Array.hpp"
53
54namespace Stokhos {
55
61
62 public:
63
66 const Teuchos::RCP<const EpetraExt::MultiComm>& mp_comm,
67 int num_mp_blocks,
68 const Teuchos::RCP<const Epetra_Map>& base_map,
69 const Teuchos::RCP<const Epetra_Map>& mp_map,
70 const Teuchos::RCP<Stokhos::AbstractPreconditionerFactory>& prec_factory,
71 const Teuchos::RCP<Teuchos::ParameterList>& params);
72
75
78
80 virtual void
82 const Teuchos::RCP<Stokhos::BlockDiagonalOperator>& mp_op,
83 const Epetra_Vector& x);
84
86
89
91 virtual int SetUseTranspose(bool UseTranspose);
92
97 virtual int Apply(const Epetra_MultiVector& Input,
98 Epetra_MultiVector& Result) const;
99
104 virtual int ApplyInverse(const Epetra_MultiVector& X,
105 Epetra_MultiVector& Y) const;
106
108 virtual double NormInf() const;
109
111 virtual const char* Label () const;
112
114 virtual bool UseTranspose() const;
115
120 virtual bool HasNormInf() const;
121
126 virtual const Epetra_Comm & Comm() const;
127
132 virtual const Epetra_Map& OperatorDomainMap () const;
133
138 virtual const Epetra_Map& OperatorRangeMap () const;
139
141
142 private:
143
146
149
150 protected:
151
153 std::string label;
154
156 Teuchos::RCP<const EpetraExt::MultiComm> mp_comm;
157
160
162 Teuchos::RCP<const Epetra_Map> base_map;
163
165 Teuchos::RCP<const Epetra_Map> mp_map;
166
168 Teuchos::RCP<Stokhos::AbstractPreconditionerFactory> prec_factory;
169
171 Teuchos::RCP<Epetra_Operator> mean_prec;
172
175
176 }; // class MPMeanBasedPreconditioner
177
178} // namespace Stokhos
179
180#endif // STOKHOS_MP_BLOCK_DIAGONAL_PRECONDITIONER_HPP
A multi-point preconditioner based on applying the inverse of the mean.
Teuchos::RCP< Epetra_Operator > mean_prec
Stores preconditioner for each block.
MPMeanBasedPreconditioner(const MPMeanBasedPreconditioner &)
Private to prohibit copying.
virtual int Apply(const Epetra_MultiVector &Input, Epetra_MultiVector &Result) const
Returns the result of a Epetra_Operator applied to a Epetra_MultiVector Input in Result as described ...
Teuchos::RCP< Stokhos::AbstractPreconditionerFactory > prec_factory
Stores factory for building mean preconditioner.
MPMeanBasedPreconditioner & operator=(const MPMeanBasedPreconditioner &)
Private to prohibit copying.
virtual int SetUseTranspose(bool UseTranspose)
Set to true if the transpose of the operator is requested.
virtual int ApplyInverse(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
Returns the result of the inverse of the operator applied to a Epetra_MultiVector Input in Result as ...
virtual double NormInf() const
Returns an approximate infinity norm of the operator matrix.
virtual void setupPreconditioner(const Teuchos::RCP< Stokhos::BlockDiagonalOperator > &mp_op, const Epetra_Vector &x)
Setup preconditioner.
virtual bool HasNormInf() const
Returns true if the this object can provide an approximate Inf-norm, false otherwise.
virtual const Epetra_Map & OperatorRangeMap() const
Returns the Epetra_Map object associated with the range of this matrix operator.
bool useTranspose
Flag indicating whether transpose was selected.
virtual bool UseTranspose() const
Returns the current UseTranspose setting.
virtual const char * Label() const
Returns a character string describing the operator.
virtual const Epetra_Comm & Comm() const
Returns a reference to the Epetra_Comm communicator associated with this operator.
Teuchos::RCP< const Epetra_Map > base_map
Stores base map.
virtual const Epetra_Map & OperatorDomainMap() const
Returns the Epetra_Map object associated with the domain of this matrix operator.
Teuchos::RCP< const Epetra_Map > mp_map
Stores MP map.
Teuchos::RCP< const EpetraExt::MultiComm > mp_comm
Stores MP parallel communicator.
MPMeanBasedPreconditioner(const Teuchos::RCP< const EpetraExt::MultiComm > &mp_comm, int num_mp_blocks, const Teuchos::RCP< const Epetra_Map > &base_map, const Teuchos::RCP< const Epetra_Map > &mp_map, const Teuchos::RCP< Stokhos::AbstractPreconditionerFactory > &prec_factory, const Teuchos::RCP< Teuchos::ParameterList > &params)
Constructor.
An abstract class to represent a generic stochastic Galerkin preconditioner as an Epetra_Operator.
Top-level namespace for Stokhos classes and functions.