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Reference documentation for deal.II version 9.2.0
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Reference documentation for deal.II version 9.2.0
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#include <deal.II/multigrid/mg_transfer.h>
Public Member Functions | |
| void | clear () |
| template<int dim, class InVector , int spacedim> | |
| void | copy_to_mg (const DoFHandler< dim, spacedim > &dof_handler, MGLevelObject< VectorType > &dst, const InVector &src) const |
| template<int dim, class OutVector , int spacedim> | |
| void | copy_from_mg (const DoFHandler< dim, spacedim > &dof_handler, OutVector &dst, const MGLevelObject< VectorType > &src) const |
| template<int dim, class OutVector , int spacedim> | |
| void | copy_from_mg_add (const DoFHandler< dim, spacedim > &dof_handler, OutVector &dst, const MGLevelObject< VectorType > &src) const |
| void | set_component_to_block_map (const std::vector< unsigned int > &map) |
| std::size_t | memory_consumption () const |
| void | print_indices (std::ostream &os) const |
 Public Member Functions inherited from MGTransferBase< VectorType > | |
| virtual | ~MGTransferBase () override=default |
| virtual void | prolongate (const unsigned int to_level, VectorType &dst, const VectorType &src) const =0 |
| virtual void | restrict_and_add (const unsigned int from_level, VectorType &dst, const VectorType &src) const =0 |
| Public Member Functions inherited from Subscriptor | |
| Subscriptor () | |
| Subscriptor (const Subscriptor &) | |
| Subscriptor (Subscriptor &&) noexcept | |
| virtual | ~Subscriptor () |
| Subscriptor & | operator= (const Subscriptor &) |
| Subscriptor & | operator= (Subscriptor &&) noexcept |
| 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 |
| template<class Archive > | |
| void | serialize (Archive &ar, const unsigned int version) |
Protected Member Functions | |
| template<int dim, int spacedim> | |
| void | fill_and_communicate_copy_indices (const DoFHandler< dim, spacedim > &dof_handler) |
Protected Attributes | |
| std::vector< types::global_dof_index > | sizes |
| std::vector< std::vector< std::pair< types::global_dof_index, types::global_dof_index > > > | copy_indices |
| std::vector< std::vector< std::pair< types::global_dof_index, types::global_dof_index > > > | copy_indices_global_mine |
| std::vector< std::vector< std::pair< types::global_dof_index, types::global_dof_index > > > | copy_indices_level_mine |
| bool | perform_plain_copy |
| std::vector< unsigned int > | component_to_block_map |
| SmartPointer< const MGConstrainedDoFs, MGLevelGlobalTransfer< VectorType > > | mg_constrained_dofs |
Private Member Functions | |
| template<int dim, int spacedim> | |
| void | assert_built (const DoFHandler< dim, spacedim > &dof_handler) const |
Additional Inherited Members | |
| Static Public Member Functions inherited from Subscriptor | |
| static ::ExceptionBase & | ExcInUse (int arg1, std::string arg2, std::string arg3) |
| static ::ExceptionBase & | ExcNoSubscriber (std::string arg1, std::string arg2) |
Implementation of transfer between the global vectors and the multigrid levels for use in the derived class MGTransferPrebuilt and other classes.
Definition at line 279 of file mg_transfer.h.
| void MGLevelGlobalTransfer< VectorType >::clear |
Reset the object to the state it had right after the default constructor.
Definition at line 99 of file mg_level_global_transfer.cc.
| void MGLevelGlobalTransfer< VectorType >::copy_to_mg | ( | const DoFHandler< dim, spacedim > & | dof_handler, |
| MGLevelObject< VectorType > & | dst, | ||
| const InVector & | src | ||
| ) | const |
Transfer from a vector on the global grid to vectors defined on each of the levels separately for the active degrees of freedom. In particular, for a globally refined mesh only the finest level in dst is filled as a plain copy of src. All the other level objects are left untouched.
| void MGLevelGlobalTransfer< VectorType >::copy_from_mg | ( | const DoFHandler< dim, spacedim > & | dof_handler, |
| OutVector & | dst, | ||
| const MGLevelObject< VectorType > & | src | ||
| ) | const |
Transfer from multi-level vector to normal vector.
Copies data from active portions of an MGVector into the respective positions of a Vector<number>. In order to keep the result consistent, constrained degrees of freedom are set to zero.
| void MGLevelGlobalTransfer< VectorType >::copy_from_mg_add | ( | const DoFHandler< dim, spacedim > & | dof_handler, |
| OutVector & | dst, | ||
| const MGLevelObject< VectorType > & | src | ||
| ) | const |
Add a multi-level vector to a normal vector.
Works as the previous function, but probably not for continuous elements.
| void MGLevelGlobalTransfer< VectorType >::set_component_to_block_map | ( | const std::vector< unsigned int > & | map | ) |
If this object operates on BlockVector objects, we need to describe how the individual vector components are mapped to the blocks of a vector. For example, for a Stokes system, we have dim+1 vector components for velocity and pressure, but we may want to use block vectors with only two blocks for all velocities in one block, and the pressure variables in the other.
By default, if this function is not called, block vectors have as many blocks as the finite element has vector components. However, this can be changed by calling this function with an array that describes how vector components are to be grouped into blocks. The meaning of the argument is the same as the one given to the DoFTools::count_dofs_per_component function.
| std::size_t MGLevelGlobalTransfer< VectorType >::memory_consumption |
Memory used by this object.
Definition at line 143 of file mg_level_global_transfer.cc.
| void MGLevelGlobalTransfer< VectorType >::print_indices | ( | std::ostream & | os | ) | const |
Print the copy index fields for debugging purposes.
Definition at line 114 of file mg_level_global_transfer.cc.
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Internal function to fill copy_indices*. Called by derived classes.
Definition at line 51 of file mg_level_global_transfer.cc.
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private |
This function is called to make sure that build() has been invoked.
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Sizes of the multi-level vectors.
Definition at line 366 of file mg_transfer.h.
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Mapping for the copy_to_mg() and copy_from_mg() functions. Here only index pairs locally owned
The data is organized as follows: one vector per level. Each element of these vectors contains first the global index, then the level index.
Definition at line 377 of file mg_transfer.h.
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Additional degrees of freedom for the copy_to_mg() function. These are the ones where the global degree of freedom is locally owned and the level degree of freedom is not.
Organization of the data is like for copy_indices_mine.
Definition at line 388 of file mg_transfer.h.
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Additional degrees of freedom for the copy_from_mg() function. These are the ones where the level degree of freedom is locally owned and the global degree of freedom is not.
Organization of the data is like for copy_indices_mine.
Definition at line 399 of file mg_transfer.h.
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This variable stores whether the copy operation from the global to the level vector is actually a plain copy to the finest level. This means that the grid has no adaptive refinement and the numbering on the finest multigrid level is the same as in the global case.
Definition at line 407 of file mg_transfer.h.
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The vector that stores what has been given to the set_component_to_block_map() function.
Definition at line 413 of file mg_transfer.h.
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The mg_constrained_dofs of the level systems.
Definition at line 419 of file mg_transfer.h.
1.8.17