Reference documentation for deal.II version Git 4fbb5374f0 2021-01-22 15:02:13 -0500
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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::PreconditionChebyshev:
[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
 
template<class Archive >
void serialize (Archive &ar, const unsigned int version)
 
Access to underlying Trilinos data
Epetra_Operatortrilinos_operator () const
 
Partitioners
IndexSet locally_owned_domain_indices () const
 
IndexSet locally_owned_range_indices () const
 
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
 

Static Public Member Functions

static ::ExceptionBaseExcNonMatchingMaps (std::string arg1)
 
static ::ExceptionBaseExcInUse (int arg1, std::string arg2, std::string arg3)
 
static ::ExceptionBaseExcNoSubscriber (std::string arg1, std::string arg2)
 

Protected Attributes

Teuchos::RCP< Epetra_Operatorpreconditioner
 
Epetra_MpiComm communicator
 
std::shared_ptr< Epetra_Map > vector_distributor
 

Detailed Description

A wrapper class for a Chebyshev preconditioner for Trilinos matrices.

The AdditionalData data structure allows to set preconditioner options.

Definition at line 1232 of file trilinos_precondition.h.

Member Typedef Documentation

◆ size_type

Declare the type for container size.

Definition at line 86 of file trilinos_precondition.h.

Member Function Documentation

◆ initialize()

void PreconditionChebyshev< MatrixType, VectorType, PreconditionerType >::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.

Definition at line 679 of file trilinos_precondition.cc.

◆ clear()

void TrilinosWrappers::PreconditionBase::clear ( )
inherited

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

Definition at line 56 of file trilinos_precondition.cc.

◆ get_mpi_communicator()

MPI_Comm TrilinosWrappers::PreconditionBase::get_mpi_communicator ( ) const
inherited

Return the MPI communicator object in use with this matrix.

Definition at line 67 of file trilinos_precondition.cc.

◆ transpose()

void TrilinosWrappers::PreconditionBase::transpose ( )
inherited

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.

◆ vmult() [1/3]

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

Apply the preconditioner.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

◆ vmult() [2/3]

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

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

Reimplemented in TrilinosWrappers::PreconditionIdentity.

◆ vmult() [3/3]

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

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

◆ Tvmult() [1/3]

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

Apply the transpose preconditioner.

Reimplemented in TrilinosWrappers::PreconditionIdentity.

◆ Tvmult() [2/3]

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

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

Reimplemented in TrilinosWrappers::PreconditionIdentity.

◆ Tvmult() [3/3]

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

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

◆ trilinos_operator()

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

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

Definition at line 78 of file trilinos_precondition.cc.

◆ locally_owned_domain_indices()

IndexSet TrilinosWrappers::PreconditionBase::locally_owned_domain_indices ( ) const
inherited

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 87 of file trilinos_precondition.cc.

◆ locally_owned_range_indices()

IndexSet TrilinosWrappers::PreconditionBase::locally_owned_range_indices ( ) const
inherited

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 94 of file trilinos_precondition.cc.

◆ subscribe()

void Subscriptor::subscribe ( std::atomic< bool > *const  validity,
const std::string &  identifier = "" 
) const
inherited

Subscribes a user of the object by storing the pointer validity. The subscriber may be identified by text supplied as identifier.

Definition at line 136 of file subscriptor.cc.

◆ unsubscribe()

void Subscriptor::unsubscribe ( std::atomic< bool > *const  validity,
const std::string &  identifier = "" 
) const
inherited

Unsubscribes a user from the object.

Note
The identifier and the validity pointer must be the same as the one supplied to subscribe().

Definition at line 156 of file subscriptor.cc.

◆ n_subscriptions()

unsigned int Subscriptor::n_subscriptions ( ) const
inlineinherited

Return the present number of subscriptions to this object. This allows to use this class for reference counted lifetime determination where the last one to unsubscribe also deletes the object.

Definition at line 301 of file subscriptor.h.

◆ list_subscribers() [1/2]

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

List the subscribers to the input stream.

Definition at line 318 of file subscriptor.h.

◆ list_subscribers() [2/2]

void Subscriptor::list_subscribers ( ) const
inherited

List the subscribers to deallog.

Definition at line 204 of file subscriptor.cc.

◆ serialize()

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

Read or write the data of this object to or from a stream for the purpose of serialization using the BOOST serialization library.

This function does not actually serialize any of the member variables of this class. The reason is that what this class stores is only who subscribes to this object, but who does so at the time of storing the contents of this object does not necessarily have anything to do with who subscribes to the object when it is restored. Consequently, we do not want to overwrite the subscribers at the time of restoring, and then there is no reason to write the subscribers out in the first place.

Definition at line 310 of file subscriptor.h.

Member Data Documentation

◆ preconditioner

Teuchos::RCP<Epetra_Operator> TrilinosWrappers::PreconditionBase::preconditioner
protectedinherited

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

Definition at line 236 of file trilinos_precondition.h.

◆ communicator

Epetra_MpiComm TrilinosWrappers::PreconditionBase::communicator
protectedinherited

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

Definition at line 243 of file trilinos_precondition.h.

◆ vector_distributor

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

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

Definition at line 252 of file trilinos_precondition.h.


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