Reference documentation for deal.II version 8.4.1
TrilinosWrappers::BlockVector Class Reference

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

Inheritance diagram for TrilinosWrappers::BlockVector:
[legend]

## Public Types

typedef BlockVectorBase< VectorBaseClass

typedef BaseClass::BlockType BlockType

typedef BaseClass::value_type value_type

Public Types inherited from BlockVectorBase< Vector >
typedef Vector BlockType

typedef BlockType::real_type real_type

## Public Member Functions

BlockVector ()

BlockVector (const std::vector< Epetra_Map > &partitioner) DEAL_II_DEPRECATED

BlockVector (const std::vector< IndexSet > &partitioner, const MPI_Comm &communicator=MPI_COMM_WORLD) DEAL_II_DEPRECATED

BlockVector (const MPI::BlockVector &V) DEAL_II_DEPRECATED

BlockVector (const BlockVector &V) DEAL_II_DEPRECATED

BlockVector (const size_type num_blocks) DEAL_II_DEPRECATED

BlockVector (const std::vector< size_type > &N) DEAL_II_DEPRECATED

template<typename InputIterator >
BlockVector (const std::vector< size_type > &n, const InputIterator first, const InputIterator end) DEAL_II_DEPRECATED

~BlockVector ()

BlockVectoroperator= (const value_type s)

BlockVectoroperator= (const MPI::BlockVector &V)

BlockVectoroperator= (const BlockVector &V)

template<typename Number >
BlockVectoroperator= (const ::BlockVector< Number > &V)

void reinit (const std::vector< Epetra_Map > &partitioning, const bool omit_zeroing_entries=false)

void reinit (const std::vector< IndexSet > &partitioning, const MPI_Comm &communicator=MPI_COMM_WORLD, const bool omit_zeroing_entries=false)

void reinit (const std::vector< size_type > &N, const bool omit_zeroing_entries=false)

void reinit (const MPI::BlockVector &V)

void reinit (const BlockVector &V, const bool omit_zeroing_entries=false)

void reinit (const size_type num_blocks)

void swap (BlockVector &v)

void print (std::ostream &out, const unsigned int precision=3, const bool scientific=true, const bool across=true) const

DeclException0 (ExcIteratorRangeDoesNotMatchVectorSize)

DeclException0 (ExcNonMatchingBlockVectors)

DeclException2 (ExcNonLocalizedMap, int, int,<< "For the generation of a localized vector the map has "<< "to assign all elements to all vectors! "<< "local_size = global_size is a necessary condition, but"<< arg1<< " != "<< arg2<< " was given!")

Public Member Functions inherited from BlockVectorBase< Vector >
BlockVectorBase ()

void collect_sizes ()

void compress (::VectorOperation::values operation)

BlockTypeblock (const unsigned int i)

const BlockTypeblock (const unsigned int i) const

const BlockIndicesget_block_indices () const

unsigned int n_blocks () const

std::size_t size () const

IndexSet locally_owned_elements () const

iterator begin ()

const_iterator begin () const

iterator end ()

const_iterator end () const

value_type operator() (const size_type i) const

reference operator() (const size_type i)

value_type operator[] (const size_type i) const

reference operator[] (const size_type i)

void extract_subvector_to (const std::vector< size_type > &indices, std::vector< OtherNumber > &values) const

void extract_subvector_to (ForwardIterator indices_begin, const ForwardIterator indices_end, OutputIterator values_begin) const

BlockVectorBaseoperator= (const value_type s)

BlockVectorBaseoperator= (const BlockVectorBase &V)

BlockVectorBaseoperator= (const BlockVectorBase< VectorType2 > &V)

BlockVectorBaseoperator= (const Vector &v)

bool operator== (const BlockVectorBase< VectorType2 > &v) const

value_type operator* (const BlockVectorBase &V) const

real_type norm_sqr () const

value_type mean_value () const

real_type l1_norm () const

real_type l2_norm () const

real_type linfty_norm () const

value_type add_and_dot (const value_type a, const BlockVectorBase &V, const BlockVectorBase &W)

bool in_local_range (const size_type global_index) const

bool all_zero () const

bool is_non_negative () const

BlockVectorBaseoperator+= (const BlockVectorBase &V)

BlockVectorBaseoperator-= (const BlockVectorBase &V)

void add (const std::vector< size_type > &indices, const std::vector< Number > &values)

void add (const std::vector< size_type > &indices, const Vector< Number > &values)

void add (const size_type n_elements, const size_type *indices, const Number *values)

void add (const BlockVectorBase &V) DEAL_II_DEPRECATED

void add (const value_type a, const BlockVectorBase &V)

void add (const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W)

void sadd (const value_type s, const BlockVectorBase &V)

void sadd (const value_type s, const value_type a, const BlockVectorBase &V)

void sadd (const value_type s, const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W)

void sadd (const value_type s, const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W, const value_type c, const BlockVectorBase &X)

BlockVectorBaseoperator*= (const value_type factor)

BlockVectorBaseoperator/= (const value_type factor)

void scale (const BlockVector2 &v)

void equ (const value_type a, const BlockVector2 &V)

void equ (const value_type a, const BlockVectorBase &V, const value_type b, const BlockVectorBase &W)

void update_ghost_values () const

std::size_t memory_consumption () const

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\n"<< "(Additional information: "<< arg3<< ")\n\n"<< "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)

## Related Functions

(Note that these are not member functions.)

void swap (BlockVector &u, BlockVector &v)

Static Public Attributes inherited from BlockVectorBase< Vector >
static const bool supports_distributed_data

Protected Attributes inherited from BlockVectorBase< Vector >
std::vector< Vectorcomponents

BlockIndices block_indices

## Detailed Description

An implementation of block vectors based on the vector class implemented in TrilinosWrappers. While the base class provides for most of the interface, this class handles the actual allocation of vectors and provides functions that are specific to the underlying vector type.

In contrast to the class MPI::BlockVector, this class is based on a localized version of the vectors, which means that the whole vector is stored on each processor. Note that matrix vector products with this block vector class do only work in case the program is run on only one processor, since the Trilinos matrices are inherently parallel.

This class is deprecated, use TrilinosWrappers::MPI::BlockVector instead.

Definition at line 69 of file trilinos_block_vector.h.

## Member Typedef Documentation

Definition at line 75 of file trilinos_block_vector.h.

Typedef the type of the underlying vector.

Definition at line 80 of file trilinos_block_vector.h.

 typedef BaseClass::value_type TrilinosWrappers::BlockVector::value_type

Import the typedefs from the base class.

Definition at line 85 of file trilinos_block_vector.h.

## Constructor & Destructor Documentation

 BlockVector< Number >::BlockVector ( )
inline

Default constructor. Generate an empty vector without any blocks.

Definition at line 318 of file trilinos_block_vector.h.

 BlockVector< Number >::BlockVector ( const std::vector< Epetra_Map > & partitioner )
inlineexplicit

Constructor. Generate a block vector with as many blocks as there are entries in Input_Maps. For this non-distributed vector, the parallel partitioning is not used, just the global size of the partitioner.

Definition at line 324 of file trilinos_block_vector.h.

 BlockVector< Number >::BlockVector ( const std::vector< IndexSet > & partitioner, const MPI_Comm & communicator = MPI_COMM_WORLD )
inlineexplicit

Constructor. Generate a block vector with as many blocks as there are entries in Input_Maps. For this non-distributed vector, the parallel partitioning is not used, just the global size of the partitioner.

Definition at line 332 of file trilinos_block_vector.h.

 BlockVector< Number >::BlockVector ( const MPI::BlockVector & V )
inline

Copy-Constructor. Set all the properties of the non-parallel vector to those of the given parallel vector and import the elements.

Definition at line 387 of file trilinos_block_vector.h.

 BlockVector< Number >::BlockVector ( const BlockVector & V )
inline

Copy-Constructor. Set all the properties of the vector to those of the given input vector and copy the elements.

Definition at line 395 of file trilinos_block_vector.h.

 BlockVector< Number >::BlockVector ( const size_type num_blocks )
inlineexplicit

Creates a block vector consisting of num_blocks components, but there is no content in the individual components and the user has to fill appropriate data using a reinit of the blocks.

Definition at line 373 of file trilinos_block_vector.h.

 BlockVector< Number >::BlockVector ( const std::vector< size_type > & N )
inlineexplicit

Constructor. Set the number of blocks to n.size() and initialize each block with n[i] zero elements.

References BlockVector.reinit().

Definition at line 341 of file trilinos_block_vector.h.

template<typename InputIterator >
 BlockVector< InputIterator >::BlockVector ( const std::vector< size_type > & n, const InputIterator first, const InputIterator end )

Constructor. Set the number of blocks to n.size(). Initialize the vector with the elements pointed to by the range of iterators given as second and third argument. Apart from the first argument, this constructor is in complete analogy to the respective constructor of the std::vector class, but the first argument is needed in order to know how to subdivide the block vector into different blocks.

Definition at line 349 of file trilinos_block_vector.h.

 BlockVector< Number >::~BlockVector ( )
inline

Destructor. Clears memory

Definition at line 381 of file trilinos_block_vector.h.

## Member Function Documentation

 BlockVector & BlockVector< Number >::operator= ( const value_type s )

Copy operator: fill all components of the vector that are locally stored with the given scalar value.

Definition at line 261 of file trilinos_block_vector.cc.

 BlockVector & BlockVector< Number >::operator= ( const MPI::BlockVector & V )

Copy operator for a distributed Trilinos vector to a localized one.

Definition at line 378 of file trilinos_block_vector.cc.

 BlockVector & BlockVector< Number >::operator= ( const BlockVector & V )

Copy operator for arguments of the same type.

Definition at line 388 of file trilinos_block_vector.cc.

template<typename Number >
 BlockVector & BlockVector< Number >::operator= ( const ::BlockVector< Number > & V )

Another copy function. This one takes a deal.II block vector and copies it into a TrilinosWrappers block vector. Note that the number of blocks has to be the same in the vector as in the input vector. Use the reinit() command for resizing the BlockVector or for changing the internal structure of the block components.

Since Trilinos only works on doubles, this function is limited to accept only one possible number type in the deal.II vector.

Definition at line 421 of file trilinos_block_vector.h.

 void BlockVector< Number >::reinit ( const std::vector< Epetra_Map > & partitioning, const bool omit_zeroing_entries = false )

Reinitialize the BlockVector to contain as many blocks as there are Epetra_Maps given in the input argument, according to the global size of the individual components described in the maps. Note that the resulting vector will be stored completely on each process. The Epetra_Map is useful when data exchange with a distributed vector based on the same Epetra_map is intended. In that case, the same communicator is used for data exchange.

If omit_zeroing_entries==false, the vector is filled with zeros.

Definition at line 270 of file trilinos_block_vector.cc.

 void BlockVector< Number >::reinit ( const std::vector< IndexSet > & partitioning, const MPI_Comm & communicator = MPI_COMM_WORLD, const bool omit_zeroing_entries = false )

Reinitialize the BlockVector to contain as many blocks as there are index sets given in the input argument, according to the global size of the individual components described in the index set, and using a given MPI communicator. The MPI communicator is useful when data exchange with a distributed vector based on the same initialization is intended. In that case, the same communicator is used for data exchange.

If omit_zeroing_entries==false, the vector is filled with zeros.

Definition at line 293 of file trilinos_block_vector.cc.

 void BlockVector< Number >::reinit ( const std::vector< size_type > & N, const bool omit_zeroing_entries = false )

Reinitialize the BlockVector to contain as many blocks as there are elements in the first argument, and with the respective sizes. Since no distribution map is given, all vectors are local vectors.

If omit_zeroing_entries==false, the vector is filled with zeros.

Definition at line 317 of file trilinos_block_vector.cc.

 void BlockVector< Number >::reinit ( const MPI::BlockVector & V )

Reinitialize the vector in the same way as the given to a distributed block vector. The elements will be copied in this process.

Definition at line 333 of file trilinos_block_vector.cc.

 void BlockVector< Number >::reinit ( const BlockVector & V, const bool omit_zeroing_entries = false )

Change the dimension to that of the vector V. The same applies as for the other reinit() function.

The elements of V are not copied, i.e. this function is the same as calling reinit (V.size(), omit_zeroing_entries).

Note that you must call this (or the other reinit() functions) function, rather than calling the reinit() functions of an individual block, to allow the block vector to update its caches of vector sizes. If you call reinit() on one of the blocks, then subsequent actions on this object may yield unpredictable results since they may be routed to the wrong block.

Definition at line 362 of file trilinos_block_vector.cc.

 void BlockVector< Number >::reinit ( const size_type num_blocks )

Change the number of blocks to num_blocks. The individual blocks will get initialized with zero size, so it is assumed that the user resizes the individual blocks by herself in an appropriate way, and calls collect_sizes afterwards.

Definition at line 346 of file trilinos_block_vector.cc.

 void BlockVector< Number >::swap ( BlockVector & v )
inline

Swap the contents of this vector and the other vector v. One could do this operation with a temporary variable and copying over the data elements, but this function is significantly more efficient since it only swaps the pointers to the data of the two vectors and therefore does not need to allocate temporary storage and move data around.

Limitation: right now this function only works if both vectors have the same number of blocks. If needed, the numbers of blocks should be exchanged, too.

This function is analog to the the swap() function of all C++ standard containers. Also, there is a global function swap(u,v) that simply calls u.swap(v), again in analogy to standard functions.

Definition at line 409 of file trilinos_block_vector.h.

 void BlockVector< Number >::print ( std::ostream & out, const unsigned int precision = 3, const bool scientific = true, const bool across = true ) const

Print to a stream.

Definition at line 408 of file trilinos_block_vector.cc.

 TrilinosWrappers::BlockVector::DeclException0 ( ExcIteratorRangeDoesNotMatchVectorSize )

Exception

 TrilinosWrappers::BlockVector::DeclException0 ( ExcNonMatchingBlockVectors )

Exception

 TrilinosWrappers::BlockVector::DeclException2 ( ExcNonLocalizedMap , int , int , << "For the generation of a localized vector the map has "<< "to assign all elements to all vectors! "<< " local_size = global_size is a necessary condition )

Exception

## Friends And Related Function Documentation

 void swap ( BlockVector & u, BlockVector & v )
related

Global function which overloads the default implementation of the C++ standard library which uses a temporary object. The function simply exchanges the data of the two vectors.

Definition at line 449 of file trilinos_block_vector.h.

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