![]() |
Reference documentation for deal.II version 8.1.0
|
#include <trilinos_parallel_block_vector.h>
Public Types | |
typedef BlockVectorBase< Vector > | BaseClass |
typedef BaseClass::BlockType | BlockType |
typedef BaseClass::value_type | value_type |
typedef BaseClass::pointer | pointer |
typedef BaseClass::const_pointer | const_pointer |
typedef BaseClass::reference | reference |
typedef BaseClass::const_reference | const_reference |
typedef BaseClass::size_type | size_type |
typedef BaseClass::iterator | iterator |
typedef BaseClass::const_iterator | const_iterator |
![]() | |
typedef Vector | BlockType |
typedef BlockType::value_type | value_type |
typedef value_type * | pointer |
typedef const value_type * | const_pointer |
typedef ::internal::BlockVectorIterators::Iterator < BlockVectorBase, false > | iterator |
typedef ::internal::BlockVectorIterators::Iterator < BlockVectorBase, true > | const_iterator |
typedef BlockType::reference | reference |
typedef BlockType::const_reference | const_reference |
typedef types::global_dof_index | size_type |
typedef BlockType::real_type | real_type |
Public Member Functions | |
BlockVector () | |
BlockVector (const std::vector< Epetra_Map > ¶llel_partitioning) | |
BlockVector (const std::vector< IndexSet > ¶llel_partitioning, const MPI_Comm &communicator=MPI_COMM_WORLD) | |
BlockVector (const std::vector< IndexSet > ¶llel_partitioning, const std::vector< IndexSet > &ghost_values, const MPI_Comm &communicator) | |
BlockVector (const BlockVector &V) | |
BlockVector (const size_type num_blocks) | |
~BlockVector () | |
BlockVector & | operator= (const value_type s) |
BlockVector & | operator= (const BlockVector &V) |
BlockVector & | operator= (const ::TrilinosWrappers::BlockVector &V) |
template<typename Number > | |
BlockVector & | operator= (const ::BlockVector< Number > &V) |
void | reinit (const std::vector< Epetra_Map > ¶llel_partitioning, const bool fast=false) |
void | reinit (const std::vector< IndexSet > ¶llel_partitioning, const MPI_Comm &communicator=MPI_COMM_WORLD, const bool fast=false) |
void | reinit (const std::vector< IndexSet > &partitioning, const std::vector< IndexSet > &ghost_values, const MPI_Comm &communicator=MPI_COMM_WORLD) |
void | reinit (const BlockVector &V, const bool fast=false) |
void | reinit (const size_type num_blocks) |
void | import_nonlocal_data_for_fe (const TrilinosWrappers::BlockSparseMatrix &m, const BlockVector &v) |
void | compress (const Epetra_CombineMode last_action) DEAL_II_DEPRECATED |
bool | is_compressed () const |
bool | has_ghost_elements () const |
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) | |
![]() | |
BlockVectorBase () | |
void | collect_sizes () |
void | compress (::VectorOperation::values operation) |
void | compress () DEAL_II_DEPRECATED |
BlockType & | block (const unsigned int i) |
const BlockType & | block (const unsigned int i) const |
const BlockIndices & | get_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 |
BlockVectorBase & | operator= (const value_type s) |
BlockVectorBase & | operator= (const BlockVectorBase &V) |
BlockVectorBase & | operator= (const BlockVectorBase< VectorType2 > &V) |
BlockVectorBase & | operator= (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 |
bool | in_local_range (const size_type global_index) const |
bool | all_zero () const |
bool | is_non_negative () const |
BlockVectorBase & | operator+= (const BlockVectorBase &V) |
BlockVectorBase & | operator-= (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 value_type s) |
void | add (const BlockVectorBase &V) |
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) |
BlockVectorBase & | operator*= (const value_type factor) |
BlockVectorBase & | operator/= (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 |
![]() | |
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.\n"<< "(Additional information: "<< arg3<< ")\n"<< "Note the entry in the Frequently Asked Questions of "<< "deal.II (linked to from http://www.dealii.org/) 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) |
Related Functions | |
(Note that these are not member functions.) | |
void | swap (BlockVector &u, BlockVector &v) |
Additional Inherited Members | |
![]() | |
static const bool | supports_distributed_data |
![]() | |
std::vector< Vector > | components |
BlockIndices | block_indices |
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.
The model of distribution of data is such that each of the blocks is distributed across all MPI processes named in the MPI communicator. I.e. we don't just distribute the whole vector, but each component. In the constructors and reinit() functions, one therefore not only has to specify the sizes of the individual blocks, but also the number of elements of each of these blocks to be stored on the local process.
Definition at line 72 of file trilinos_parallel_block_vector.h.
Typedef the base class for simpler access to its own typedefs.
Definition at line 79 of file trilinos_parallel_block_vector.h.
Typedef the type of the underlying vector.
Definition at line 85 of file trilinos_parallel_block_vector.h.
typedef BaseClass::value_type TrilinosWrappers::MPI::BlockVector::value_type |
Import the typedefs from the base class.
Definition at line 91 of file trilinos_parallel_block_vector.h.
|
inline |
Default constructor. Generate an empty vector without any blocks.
Definition at line 428 of file trilinos_parallel_block_vector.h.
|
inlineexplicit |
Constructor. Generate a block vector with as many blocks as there are entries in partitioning
. Each Epetra_Map contains the layout of the distribution of data among the MPI processes.
Definition at line 434 of file trilinos_parallel_block_vector.h.
|
inlineexplicit |
Constructor. Generate a block vector with as many blocks as there are entries in partitioning
. Each IndexSet together with the MPI communicator contains the layout of the distribution of data among the MPI processes.
Definition at line 442 of file trilinos_parallel_block_vector.h.
|
inline |
Creates a BlockVector with ghost elements. ghost_values
may contain any elements in parallel_partitioning
, they will be ignored.
Definition at line 450 of file trilinos_parallel_block_vector.h.
|
inline |
Copy-Constructor. Set all the properties of the parallel vector to those of the given argument and copy the elements.
Definition at line 467 of file trilinos_parallel_block_vector.h.
|
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 459 of file trilinos_parallel_block_vector.h.
TrilinosWrappers::MPI::BlockVector::~BlockVector | ( | ) |
Destructor. Clears memory
BlockVector& TrilinosWrappers::MPI::BlockVector::operator= | ( | const value_type | s | ) |
Copy operator: fill all components of the vector that are locally stored with the given scalar value.
BlockVector& TrilinosWrappers::MPI::BlockVector::operator= | ( | const BlockVector & | V | ) |
Copy operator for arguments of the same type.
BlockVector& TrilinosWrappers::MPI::BlockVector::operator= | ( | const ::TrilinosWrappers::BlockVector & | V | ) |
Copy operator for arguments of the localized Trilinos vector type.
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 517 of file trilinos_parallel_block_vector.h.
void TrilinosWrappers::MPI::BlockVector::reinit | ( | const std::vector< Epetra_Map > & | parallel_partitioning, |
const bool | fast = false |
||
) |
Reinitialize the BlockVector to contain as many blocks as there are Epetra_Maps given in the input argument, according to the parallel distribution of the individual components described in the maps.
If fast==false
, the vector is filled with zeros.
void TrilinosWrappers::MPI::BlockVector::reinit | ( | const std::vector< IndexSet > & | parallel_partitioning, |
const MPI_Comm & | communicator = MPI_COMM_WORLD , |
||
const bool | fast = false |
||
) |
Reinitialize the BlockVector to contain as many blocks as there are index sets given in the input argument, according to the parallel distribution of the individual components described in the maps.
If fast==false
, the vector is filled with zeros.
void TrilinosWrappers::MPI::BlockVector::reinit | ( | const std::vector< IndexSet > & | partitioning, |
const std::vector< IndexSet > & | ghost_values, | ||
const MPI_Comm & | communicator = MPI_COMM_WORLD |
||
) |
like above, but with a second set of indices for ghost entries.
void TrilinosWrappers::MPI::BlockVector::reinit | ( | const BlockVector & | V, |
const bool | fast = 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(), fast)
.
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.
void TrilinosWrappers::MPI::BlockVector::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.
void TrilinosWrappers::MPI::BlockVector::import_nonlocal_data_for_fe | ( | const TrilinosWrappers::BlockSparseMatrix & | m, |
const BlockVector & | v | ||
) |
This reinit function is meant to be used for parallel calculations where some non-local data has to be used. The typical situation where one needs this function is the call of the FEValues<dim>::get_function_values function (or of some derivatives) in parallel. Since it is usually faster to retrieve the data in advance, this function can be called before the assembly forks out to the different processors. What this function does is the following: It takes the information in the columns of the given matrix and looks which data couples between the different processors. That data is then queried from the input vector. Note that you should not write to the resulting vector any more, since the some data can be stored several times on different processors, leading to unpredictable results. In particular, such a vector cannot be used for matrix-vector products as for example done during the solution of linear systems.
|
inline |
use compress(VectorOperation) instead
See Compressingdistributed objects" for more information.
Definition at line 499 of file trilinos_parallel_block_vector.h.
|
inline |
Returns the state of the vector, i.e., whether compress() needs to be called after an operation requiring data exchange. Does only return non-true values when used in debug
mode, since it is quite expensive to keep track of all operations that lead to the need for compress().
Definition at line 482 of file trilinos_parallel_block_vector.h.
|
inline |
Returns if this Vector contains ghost elements.
Definition at line 538 of file trilinos_parallel_block_vector.h.
|
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 550 of file trilinos_parallel_block_vector.h.
void TrilinosWrappers::MPI::BlockVector::print | ( | std::ostream & | out, |
const unsigned int | precision = 3 , |
||
const bool | scientific = true , |
||
const bool | across = true |
||
) | const |
Print to a stream.
TrilinosWrappers::MPI::BlockVector::DeclException0 | ( | ExcIteratorRangeDoesNotMatchVectorSize | ) |
Exception
TrilinosWrappers::MPI::BlockVector::DeclException0 | ( | ExcNonMatchingBlockVectors | ) |
Exception
|
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 570 of file trilinos_parallel_block_vector.h.