Reference documentation for deal.II version Git 6454e3f 2017-06-26 22:46:01 +0200
Classes | Public Types | Public Member Functions | Static Public Member Functions | Protected Attributes | List of all members

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

Inheritance diagram for TrilinosWrappers::PreconditionBase:
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Classes

struct  AdditionalData
 

Public Types

typedef ::types::global_dof_index size_type
 

Public Member Functions

 PreconditionBase ()
 
 PreconditionBase (const PreconditionBase &)
 
 ~PreconditionBase ()
 
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
 
Access to underlying Trilinos data
Epetra_Operator & trilinos_operator () const
 
Partitioners
IndexSet locally_owned_domain_indices () const
 
IndexSet locally_owned_range_indices () const
 
- Public Member Functions inherited from Subscriptor
 Subscriptor ()
 
 Subscriptor (const Subscriptor &)
 
 Subscriptor (Subscriptor &&)
 
virtual ~Subscriptor ()
 
Subscriptoroperator= (const Subscriptor &)
 
Subscriptoroperator= (Subscriptor &&)
 
void subscribe (const char *identifier=nullptr) const
 
void unsubscribe (const char *identifier=nullptr) const
 
unsigned int n_subscriptions () const
 
void list_subscribers () const
 
template<class Archive >
void serialize (Archive &ar, const unsigned int version)
 

Static Public Member Functions

static::ExceptionBase & ExcNonMatchingMaps (std::string arg1)
 
- Static Public Member Functions inherited from Subscriptor
static::ExceptionBase & ExcInUse (int arg1, char *arg2, std::string &arg3)
 
static::ExceptionBase & ExcNoSubscriber (char *arg1, char *arg2)
 

Protected Attributes

std::shared_ptr< Epetra_Operator > preconditioner
 
Epetra_MpiComm communicator
 
std::shared_ptr< Epetra_Map > vector_distributor
 

Detailed Description

The base class for all preconditioners based on Trilinos sparse matrices.

Author
Martin Kronbichler, 2008; extension for full compatibility with LinearOperator class: Jean-Paul Pelteret, 2015

Definition at line 79 of file trilinos_precondition.h.

Member Typedef Documentation

Declare the type for container size.

Definition at line 85 of file trilinos_precondition.h.

Constructor & Destructor Documentation

TrilinosWrappers::PreconditionBase::PreconditionBase ( )

Constructor. Does not do anything. The initialize function of the derived classes will have to create the preconditioner from a given sparse matrix.

Definition at line 37 of file trilinos_precondition.cc.

TrilinosWrappers::PreconditionBase::PreconditionBase ( const PreconditionBase base)

Copy constructor.

Definition at line 46 of file trilinos_precondition.cc.

TrilinosWrappers::PreconditionBase::~PreconditionBase ( )

Destructor.

Definition at line 58 of file trilinos_precondition.cc.

Member Function Documentation

void TrilinosWrappers::PreconditionBase::clear ( )

Destroys the preconditioner, leaving an object like just after having called the constructor.

Definition at line 63 of file trilinos_precondition.cc.

MPI_Comm TrilinosWrappers::PreconditionBase::get_mpi_communicator ( ) const

Return the MPI communicator object in use with this matrix.

Definition at line 74 of file trilinos_precondition.cc.

void TrilinosWrappers::PreconditionBase::transpose ( )

Sets an internal flag so that all operations performed by the matrix, i.e., multiplications, are done in transposed order. However, this does not reshape the matrix to transposed form directly, so care should be taken when using this flag.

Note
Calling this function any even number of times in succession will return the object to its original state.
virtual void TrilinosWrappers::PreconditionBase::vmult ( MPI::Vector dst,
const MPI::Vector src 
) const
virtual

Apply the preconditioner.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

virtual void TrilinosWrappers::PreconditionBase::Tvmult ( MPI::Vector dst,
const MPI::Vector src 
) const
virtual

Apply the transpose preconditioner.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

virtual void TrilinosWrappers::PreconditionBase::vmult ( ::Vector< double > &  dst,
const ::Vector< double > &  src 
) const
virtual

Apply the preconditioner on deal.II data structures instead of the ones provided in the Trilinos wrapper class.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

virtual void TrilinosWrappers::PreconditionBase::Tvmult ( ::Vector< double > &  dst,
const ::Vector< double > &  src 
) const
virtual

Apply the transpose preconditioner on deal.II data structures instead of the ones provided in the Trilinos wrapper class.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

virtual void TrilinosWrappers::PreconditionBase::vmult ( ::LinearAlgebra::distributed::Vector< double > &  dst,
const ::LinearAlgebra::distributed::Vector< double > &  src 
) const
virtual

Apply the preconditioner on deal.II parallel data structures instead of the ones provided in the Trilinos wrapper class.

virtual void TrilinosWrappers::PreconditionBase::Tvmult ( ::LinearAlgebra::distributed::Vector< double > &  dst,
const ::LinearAlgebra::distributed::Vector< double > &  src 
) const
virtual

Apply the transpose preconditioner on deal.II parallel data structures instead of the ones provided in the Trilinos wrapper class.

Epetra_Operator & TrilinosWrappers::PreconditionBase::trilinos_operator ( ) const

Calling this function from an uninitialized object will cause an exception.

Definition at line 85 of file trilinos_precondition.cc.

IndexSet TrilinosWrappers::PreconditionBase::locally_owned_domain_indices ( ) const

Return the partitioning of the domain space of this matrix, i.e., the partitioning of the vectors this matrix has to be multiplied with.

Definition at line 93 of file trilinos_precondition.cc.

IndexSet TrilinosWrappers::PreconditionBase::locally_owned_range_indices ( ) const

Return the partitioning of the range space of this matrix, i.e., the partitioning of the vectors that are result from matrix-vector products.

Definition at line 100 of file trilinos_precondition.cc.

Member Data Documentation

std::shared_ptr<Epetra_Operator> TrilinosWrappers::PreconditionBase::preconditioner
protected

This is a pointer to the preconditioner object that is used when applying the preconditioner.

Definition at line 228 of file trilinos_precondition.h.

Epetra_MpiComm TrilinosWrappers::PreconditionBase::communicator
protected

Internal communication pattern in case the matrix needs to be copied from deal.II format.

Definition at line 235 of file trilinos_precondition.h.

std::shared_ptr<Epetra_Map> TrilinosWrappers::PreconditionBase::vector_distributor
protected

Internal Trilinos map in case the matrix needs to be copied from deal.II format.

Definition at line 244 of file trilinos_precondition.h.


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