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

Inheritance diagram for TrilinosWrappers::PreconditionBlockSOR:

Classes
struct	AdditionalData

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

Public Member Functions inherited from TrilinosWrappers::PreconditionBase
	PreconditionBase ()

	PreconditionBase (const PreconditionBase &)

	~PreconditionBase () override=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

Epetra_Operator &	trilinos_operator () const

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

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

void	list_subscribers () const

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

Additional Inherited Members
Public Types inherited from TrilinosWrappers::PreconditionBase
using	size_type = ::types::global_dof_index

Static Public Member Functions inherited from TrilinosWrappers::PreconditionBase
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 inherited from TrilinosWrappers::PreconditionBase
std::shared_ptr< Epetra_Operator >	preconditioner

Epetra_MpiComm	communicator

std::shared_ptr< Epetra_Map >	vector_distributor

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.

Author: Martin Kronbichler, 2014

Definition at line 748 of file trilinos_precondition.h.

Member Function Documentation

void PreconditionBlockSOR< MatrixType, inverse_type >::initialize	(	const SparseMatrix &	matrix,
		const AdditionalData &	additional_data = `AdditionalData()`
	)

Take the sparse matrix the preconditioner object should be built of, and additional flags (damping parameter, overlap in parallel computations etc.) if there are any.

Definition at line 413 of file trilinos_precondition.cc.

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

deal.II/lac/trilinos_precondition.h
/mnt/data/darndt/Sources/dealii-clang-6.0.0/source/lac/trilinos_precondition.cc

Classes

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation