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Reference documentation for deal.II version 8.4.2
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Reference documentation for deal.II version 8.4.2
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#include <deal.II/lac/trilinos_precondition.h>
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 () | |
| 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 |
| Epetra_Operator & | trilinos_operator () 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 () |
| Subscriptor & | operator= (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."<< "\"<< "(Additional information: "<< arg3<< ")\"<< "See the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) for "<< "a lot more information on what this error means and "<< "how to fix programs in which it happens.") | |
| DeclException2 (ExcNoSubscriber, char *, char *,<< "No subscriber with identifier <"<< arg2<< "> subscribes to this object of class "<< arg1<< ". Consequently, it cannot be unsubscribed.") | |
| 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 | |
| std_cxx11::shared_ptr< Epetra_Operator > | preconditioner |
| Epetra_MpiComm | communicator |
| std_cxx11::shared_ptr< Epetra_Map > | vector_distributor |
A wrapper class for a block Jacobi 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". Note that the term block Jacobi does not relate to possible blocks in the MPI setting, but small blocks of dense matrices extracted from the sparse matrix local to each processor.
The AdditionalData data structure allows to set preconditioner options.
Definition at line 482 of file trilinos_precondition.h.
| void PreconditionBlockJacobi< MatrixType, inverse_type >::initialize | ( | const SparseMatrix & | matrix, |
| const AdditionalData & | additional_data = AdditionalData() |
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| ) |
Take the sparse matrix the preconditioner object should be built of, and additional flags (damping parameter, etc.) if there are any.
Definition at line 250 of file trilinos_precondition.cc.
1.8.12