MGTransferComponentBase Class Reference

#include <deal.II/multigrid/mg_transfer_component.h>

Inheritance diagram for MGTransferComponentBase:

Public Member Functions
std::size_t	memory_consumption () const

Protected Member Functions
template<int dim, int spacedim>
void	build_matrices (const DoFHandler< dim, spacedim > &dof, const DoFHandler< dim, spacedim > &mg_dof)

Static Protected Member Functions
static ::ExceptionBase &	ExcMatricesNotBuilt ()

Protected Attributes
ComponentMask	component_mask
ComponentMask	mg_component_mask
std::vector< unsigned int >	target_component
std::vector< unsigned int >	mg_target_component
std::vector< std::vector< types::global_dof_index > >	sizes
std::vector< types::global_dof_index >	component_start
std::vector< std::vector< types::global_dof_index > >	mg_component_start
std::vector< std::shared_ptr< BlockSparseMatrix< double > > >	prolongation_matrices
std::vector< std::vector< std::pair< types::global_dof_index, unsigned int > > >	copy_to_and_from_indices
std::vector< std::set< types::global_dof_index > >	boundary_indices

Detailed Description

Implementation of matrix generation for component wise multigrid transfer.

Note

MGTransferBlockBase is probably the more logical class. Still eventually, a class should be developed allowing to select multiple components.

Author

Guido Kanschat, 2001-2003

Definition at line 61 of file mg_transfer_component.h.

Member Function Documentation

memory_consumption()

std::size_t MGTransferComponentBase::memory_consumption

(

)

const

Memory used by this object.

Definition at line 149 of file multigrid.cc.

build_matrices()

template<int dim, int spacedim>

void MGTransferComponentBase::build_matrices ( const DoFHandler< dim, spacedim > &  dof, const DoFHandler< dim, spacedim > &  mg_dof  )

protected

Actually build the prolongation matrices for each level.

This function is only called by derived classes. These can also set the member variables selected_component and mg_selected_component member variables to restrict the transfer matrices to certain components. Furthermore, they use target_component and mg_target_component for re-ordering and grouping of components.

Definition at line 258 of file mg_transfer_component.cc.

Member Data Documentation

component_mask

ComponentMask MGTransferComponentBase::component_mask

protected

Flag of selected components.

The transfer operators only act on the components having a true entry here. If renumbering by target_component is used, this refers to the renumbered components.

Definition at line 94 of file mg_transfer_component.h.

mg_component_mask

ComponentMask MGTransferComponentBase::mg_component_mask

protected

Flag of selected components.

The transfer operators only act on the components having a true entry here. If renumbering by mg_target_component is used, this refers to the renumbered components.

Definition at line 103 of file mg_transfer_component.h.

target_component

std::vector<unsigned int> MGTransferComponentBase::target_component

protected

Target component of the fine-level vector if renumbering is required.

Definition at line 108 of file mg_transfer_component.h.

mg_target_component

std::vector<unsigned int> MGTransferComponentBase::mg_target_component

protected

Target component if renumbering of level vectors is required.

Definition at line 113 of file mg_transfer_component.h.

sizes

std::vector<std::vector<types::global_dof_index> > MGTransferComponentBase::sizes

mutableprotected

Sizes of the multi-level vectors.

Definition at line 118 of file mg_transfer_component.h.

component_start

std::vector<types::global_dof_index> MGTransferComponentBase::component_start

protected

Start index of each component.

Definition at line 123 of file mg_transfer_component.h.

mg_component_start

std::vector<std::vector<types::global_dof_index> > MGTransferComponentBase::mg_component_start

protected

Start index of each component on all levels.

Definition at line 128 of file mg_transfer_component.h.

prolongation_matrices

std::vector<std::shared_ptr<BlockSparseMatrix<double> > > MGTransferComponentBase::prolongation_matrices

protected

The actual prolongation matrix. column indices belong to the dof indices of the mother cell, i.e. the coarse level. while row indices belong to the child cell, i.e. the fine level.

Definition at line 144 of file mg_transfer_component.h.

copy_to_and_from_indices

std::vector<std::vector<std::pair<types::global_dof_index, unsigned int> > > MGTransferComponentBase::copy_to_and_from_indices

protected

This variable holds the mapping for the copy_to/from_mg-functions. The data is first the global index, then the level index.

Definition at line 151 of file mg_transfer_component.h.

boundary_indices

std::vector<std::set<types::global_dof_index> > MGTransferComponentBase::boundary_indices

protected

Store the boundary_indices. These are needed for the boundary values in the restriction matrix.

Definition at line 157 of file mg_transfer_component.h.

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

• deal.II/multigrid/mg_transfer_component.h
• source/multigrid/mg_transfer_component.cc
• source/multigrid/multigrid.cc