43#include "EpetraExt_BlockMultiVector.h"
47 const Teuchos::RCP<const EpetraExt::MultiComm>& mp_comm_,
49 const Teuchos::RCP<const Epetra_Map>& base_map_,
50 const Teuchos::RCP<const Epetra_Map>& mp_map_,
51 const Teuchos::RCP<Stokhos::AbstractPreconditionerFactory>& prec_factory_,
52 const Teuchos::RCP<Teuchos::ParameterList>& params_) :
53 label(
"Stokhos MP Block Diagonal Preconditioner"),
55 num_mp_blocks(num_mp_blocks_),
58 prec_factory(prec_factory_),
74 TEUCHOS_TEST_FOR_EXCEPTION(prec_factory == Teuchos::null, std::logic_error,
75 "Error! setupPreconditioner() cannot be called when " <<
76 "prec_factory is null!" << std::endl);
78 Teuchos::RCP<Stokhos::ProductContainer<Epetra_Operator> > mp_ops =
80 mean_prec = prec_factory->compute(mp_ops->getCoeffPtr(0));
81 if (num_mp_blocks > 0) {
82 label = std::string(
"Stokhos MP Mean Preconditioner:\n") +
83 std::string(
" ***** ") +
84 std::string(mean_prec->Label());
92 useTranspose = UseTheTranspose;
93 mean_prec->SetUseTranspose(useTranspose);
102 EpetraExt::BlockMultiVector mp_input(
View, *base_map, Input);
103 EpetraExt::BlockMultiVector mp_result(
View, *base_map, Result);
104 for (
int i=0; i<num_mp_blocks; i++) {
105 mean_prec->Apply(*(mp_input.GetBlock(i)), *(mp_result.GetBlock(i)));
115 EpetraExt::BlockMultiVector mp_input(
View, *base_map, Input);
116 EpetraExt::BlockMultiVector mp_result(
View, *base_map, Result);
117 for (
int i=0; i<num_mp_blocks; i++) {
118 mean_prec->ApplyInverse(*(mp_input.GetBlock(i)), *(mp_result.GetBlock(i)));
128 return mean_prec->NormInf();
136 return const_cast<char*
>(label.c_str());
150 return mean_prec->HasNormInf();
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 ...
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.
virtual ~MPMeanBasedPreconditioner()
Destructor.
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.
virtual const Epetra_Map & OperatorDomainMap() const
Returns the Epetra_Map object associated with the domain of this matrix operator.
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 > ¶ms)
Constructor.