Reference documentation for deal.II version Git 6615d95 2015-02-28 17:09:00 -0500
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TrilinosWrappers::PreconditionBlockwiseDirect Class Reference

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

Inheritance diagram for TrilinosWrappers::PreconditionBlockwiseDirect:


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 ()
void clear ()
virtual void vmult (VectorBase &dst, const VectorBase &src) const
virtual void Tvmult (VectorBase &dst, const VectorBase &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 (::parallel::distributed::Vector< double > &dst, const ::parallel::distributed::Vector< double > &src) const
virtual void Tvmult (::parallel::distributed::Vector< double > &dst, const ::parallel::distributed::Vector< double > &src) const
 DeclException1 (ExcNonMatchingMaps, std::string,<< "The sparse matrix the preconditioner is based on "<< "uses a map that is not compatible to the one in vector "<< arg1<< ". Check preconditioner and matrix setup.")
- Public Member Functions inherited from Subscriptor
 Subscriptor ()
 Subscriptor (const Subscriptor &)
virtual ~Subscriptor ()
Subscriptoroperator= (const Subscriptor &)
void subscribe (const char *identifier=0) const
void unsubscribe (const char *identifier=0) const
unsigned int n_subscriptions () const
void list_subscribers () const
 DeclException3 (ExcInUse, int, char *, std::string &,<< "Object of class "<< arg2<< " is still used by "<< arg1<< " other objects.\n"<< "(Additional information: "<< arg3<< ")\n"<< "Note the entry in the Frequently Asked Questions of "<< "deal.II (linked to from for "<< "more information on what this error means.")
 DeclException2 (ExcNoSubscriber, char *, char *,<< "No subscriber with identifier \""<< arg2<< "\" did subscribe to this object of class "<< arg1)
template<class Archive >
void serialize (Archive &ar, const unsigned int version)

Additional Inherited Members

- Public Types inherited from TrilinosWrappers::PreconditionBase
typedef ::types::global_dof_index size_type
- Protected Attributes inherited from TrilinosWrappers::PreconditionBase
< Epetra_Operator > 
Epetra_MpiComm communicator
std_cxx11::shared_ptr< Epetra_Map > vector_distributor

Detailed Description

A wrapper class for a sparse direct LU decomposition on parallel blocks for Trilinos matrices. When run in serial, this corresponds to a direct solve on the matrix.

The AdditionalData data structure allows to set preconditioner options.

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

Martin Kronbichler, 2008

Definition at line 1138 of file trilinos_precondition.h.

Member Function Documentation

void TrilinosWrappers::PreconditionBlockwiseDirect::initialize ( const SparseMatrix matrix,
const AdditionalData additional_data = AdditionalData() 

Initialize function. Takes the matrix which is used to form the preconditioner, and additional flags if there are any.

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