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

Inheritance diagram for TrilinosWrappers::PreconditionBlockSOR:

Classes
struct	AdditionalData

Public Types
using	size_type = ::types::global_dof_index

Public Member Functions
void	initialize (const SparseMatrix &matrix, const AdditionalData &additional_data=AdditionalData())

void	clear ()

MPI_Comm	get_mpi_communicator () const

void	transpose ()

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

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

virtual void	Tvmult (::Vector< double > &dst, const ::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

Teuchos::RCP< Epetra_Operator >	preconditioner

Epetra_MpiComm	communicator

std::shared_ptr< Epetra_Map >	vector_distributor

static ::ExceptionBase &	ExcNonMatchingMaps (std::string arg1)

Subscriptor functionality
Classes derived from Subscriptor provide a facility to subscribe to this object. This is mostly used by the SmartPointer class.
void	subscribe (std::atomic< bool > *const validity, const std::string &identifier="") const

void	unsubscribe (std::atomic< bool > *const validity, const std::string &identifier="") const

unsigned int	n_subscriptions () const

template<typename StreamType >
void	list_subscribers (StreamType &stream) const

void	list_subscribers () const

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)

static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

using	map_value_type = decltype(counter_map)::value_type

using	map_iterator = decltype(counter_map)::iterator

std::atomic< unsigned int >	counter

std::map< std::string, unsigned int >	counter_map

std::vector< std::atomic< bool > * >	validity_pointers

const std::type_info *	object_info

static std::mutex	mutex

void	check_no_subscribers () const noexcept

Detailed Description

A wrapper class for a block SOR preconditioner for Trilinos matrices. As opposed to PreconditionSOR where each row is treated separately, this scheme collects block of a given size and inverts a full matrix for all these rows simultaneously. Trilinos allows to select several strategies for selecting which rows form a block, including "linear" (i.e., divide the local range of the matrix in slices of the block size), "greedy" or "metis".

The AdditionalData data structure allows to set preconditioner options.

Note that a parallel application of this preconditioner is actually a block-Jacobi preconditioner with (outer) block size equal to the local matrix size. Spoken more technically, this parallel operation is an additive Schwarz method with a block SOR approximate solve as inner solver, based on the outer parallel partitioning.

Definition at line 733 of file trilinos_precondition.h.

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

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

Classes

Public Types

Public Member Functions

Partitioners

Subscriptor functionality

Detailed Description