TrilinosWrappers::PreconditionBase Class Reference

#include <deal.II/lac/trilinos_precondition.h>

Inheritance diagram for TrilinosWrappers::PreconditionBase:

Classes
struct	AdditionalData

Public Types
typedef ::types::global_dof_index	size_type

Public Member Functions
	PreconditionBase ()
	PreconditionBase (const PreconditionBase &)
	~PreconditionBase ()=default
void	clear ()
MPI_Comm	get_mpi_communicator () const
void	transpose ()
virtual void	vmult (MPI::Vector &dst, const MPI::Vector &src) const
virtual void	Tvmult (MPI::Vector &dst, const MPI::Vector &src) const
virtual void	vmult (::Vector< double > &dst, const ::Vector< double > &src) const
virtual void	Tvmult (::Vector< double > &dst, const ::Vector< double > &src) const
virtual void	vmult (::LinearAlgebra::distributed::Vector< double > &dst, const ::LinearAlgebra::distributed::Vector< double > &src) const
virtual void	Tvmult (::LinearAlgebra::distributed::Vector< double > &dst, const ::LinearAlgebra::distributed::Vector< double > &src) const
Access to underlying Trilinos data
Epetra_Operator &	trilinos_operator () const
Partitioners
IndexSet	locally_owned_domain_indices () const
IndexSet	locally_owned_range_indices () const
Public Member Functions inherited from Subscriptor
	Subscriptor ()
	Subscriptor (const Subscriptor &)
	Subscriptor (Subscriptor &&) noexcept
virtual	~Subscriptor ()
Subscriptor &	operator= (const Subscriptor &)
Subscriptor &	operator= (Subscriptor &&) noexcept
void	subscribe (const char *identifier=nullptr) const
void	unsubscribe (const char *identifier=nullptr) const
unsigned int	n_subscriptions () const
void	list_subscribers () const
template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

Static Public Member Functions
static ::ExceptionBase &	ExcNonMatchingMaps (std::string arg1)
Static Public Member Functions inherited from Subscriptor
static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)
static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

Protected Attributes
std::shared_ptr< Epetra_Operator >	preconditioner
Epetra_MpiComm	communicator
std::shared_ptr< Epetra_Map >	vector_distributor

Detailed Description

The base class for all preconditioners based on Trilinos sparse matrices.

Author

Martin Kronbichler, 2008; extension for full compatibility with LinearOperator class: Jean-Paul Pelteret, 2015

Definition at line 77 of file trilinos_precondition.h.

Member Typedef Documentation

size_type

typedef ::types::global_dof_index TrilinosWrappers::PreconditionBase::size_type

Declare the type for container size.

Definition at line 83 of file trilinos_precondition.h.

Constructor & Destructor Documentation

PreconditionBase() [1/2]

TrilinosWrappers::PreconditionBase::PreconditionBase

(

)

Constructor. Does not do anything. The initialize function of the derived classes will have to create the preconditioner from a given sparse matrix.

Definition at line 35 of file trilinos_precondition.cc.

PreconditionBase() [2/2]

TrilinosWrappers::PreconditionBase::PreconditionBase

(

const PreconditionBase &

base

)

Copy constructor.

Definition at line 44 of file trilinos_precondition.cc.

~PreconditionBase()

TrilinosWrappers::PreconditionBase::~PreconditionBase ( )

default

Destructor.

Member Function Documentation

clear()

void TrilinosWrappers::PreconditionBase::clear

(

)

Destroys the preconditioner, leaving an object like just after having called the constructor.

Definition at line 56 of file trilinos_precondition.cc.

get_mpi_communicator()

MPI_Comm TrilinosWrappers::PreconditionBase::get_mpi_communicator

(

)

const

Return the MPI communicator object in use with this matrix.

Definition at line 67 of file trilinos_precondition.cc.

transpose()

void TrilinosWrappers::PreconditionBase::transpose

(

)

Sets an internal flag so that all operations performed by the matrix, i.e., multiplications, are done in transposed order. However, this does not reshape the matrix to transposed form directly, so care should be taken when using this flag.

Note

Calling this function any even number of times in succession will return the object to its original state.

vmult() [1/3]

virtual void TrilinosWrappers::PreconditionBase::vmult ( MPI::Vector &  dst, const MPI::Vector &  src  ) const

virtual

Apply the preconditioner.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

Tvmult() [1/3]

virtual void TrilinosWrappers::PreconditionBase::Tvmult ( MPI::Vector &  dst, const MPI::Vector &  src  ) const

virtual

Apply the transpose preconditioner.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

vmult() [2/3]

virtual void TrilinosWrappers::PreconditionBase::vmult ( ::Vector< double > &  dst, const ::Vector< double > &  src  ) const

virtual

Apply the preconditioner on deal.II data structures instead of the ones provided in the Trilinos wrapper class.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

Tvmult() [2/3]

virtual void TrilinosWrappers::PreconditionBase::Tvmult ( ::Vector< double > &  dst, const ::Vector< double > &  src  ) const

virtual

Apply the transpose preconditioner on deal.II data structures instead of the ones provided in the Trilinos wrapper class.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

vmult() [3/3]

virtual void TrilinosWrappers::PreconditionBase::vmult ( ::LinearAlgebra::distributed::Vector< double > &  dst, const ::LinearAlgebra::distributed::Vector< double > &  src  ) const

virtual

Apply the preconditioner on deal.II parallel data structures instead of the ones provided in the Trilinos wrapper class.

Tvmult() [3/3]

virtual void TrilinosWrappers::PreconditionBase::Tvmult ( ::LinearAlgebra::distributed::Vector< double > &  dst, const ::LinearAlgebra::distributed::Vector< double > &  src  ) const

virtual

Apply the transpose preconditioner on deal.II parallel data structures instead of the ones provided in the Trilinos wrapper class.

trilinos_operator()

Epetra_Operator & TrilinosWrappers::PreconditionBase::trilinos_operator

(

)

const

Calling this function from an uninitialized object will cause an exception.

Definition at line 78 of file trilinos_precondition.cc.

locally_owned_domain_indices()

IndexSet TrilinosWrappers::PreconditionBase::locally_owned_domain_indices

(

)

const

Return the partitioning of the domain space of this matrix, i.e., the partitioning of the vectors this matrix has to be multiplied with.

Definition at line 86 of file trilinos_precondition.cc.

locally_owned_range_indices()

IndexSet TrilinosWrappers::PreconditionBase::locally_owned_range_indices

(

)

const

Return the partitioning of the range space of this matrix, i.e., the partitioning of the vectors that are result from matrix-vector products.

Definition at line 93 of file trilinos_precondition.cc.

Member Data Documentation

preconditioner

std::shared_ptr<Epetra_Operator> TrilinosWrappers::PreconditionBase::preconditioner

protected

This is a pointer to the preconditioner object that is used when applying the preconditioner.

Definition at line 226 of file trilinos_precondition.h.

communicator

Epetra_MpiComm TrilinosWrappers::PreconditionBase::communicator

protected

Internal communication pattern in case the matrix needs to be copied from deal.II format.

Definition at line 233 of file trilinos_precondition.h.

vector_distributor

std::shared_ptr<Epetra_Map> TrilinosWrappers::PreconditionBase::vector_distributor

protected

Internal Trilinos map in case the matrix needs to be copied from deal.II format.

Definition at line 242 of file trilinos_precondition.h.

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The documentation for this class was generated from the following files:

• deal.II/lac/trilinos_precondition.h
• source/lac/trilinos_precondition.cc