Reference documentation for deal.II version 9.4.1
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Classes | Public Types | Public Member Functions | List of all members

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

Inheritance diagram for TrilinosWrappers::PreconditionBlockSSOR:
[legend]

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_Operatortrilinos_operator () const
 

Partitioners

IndexSet locally_owned_domain_indices () const
 
IndexSet locally_owned_range_indices () const
 
Teuchos::RCP< Epetra_Operatorpreconditioner
 
Epetra_MpiComm communicator
 
std::shared_ptr< Epetra_Map > vector_distributor
 
static ::ExceptionBaseExcNonMatchingMaps (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 ::ExceptionBaseExcInUse (int arg1, std::string arg2, std::string arg3)
 
static ::ExceptionBaseExcNoSubscriber (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 intcounter
 
std::map< std::string, unsigned intcounter_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 SSOR preconditioner for Trilinos matrices. As opposed to PreconditionSSOR where each row is treated separately (point- wise), 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 SSOR approximate solve as inner solver, based on the outer parallel partitioning.

Definition at line 622 of file trilinos_precondition.h.


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