Reference documentation for deal.II version 8.1.0
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Public Member Functions | Protected Member Functions | Protected Attributes | Private Attributes | List of all members
MGTransferBlockBase Class Reference

#include <mg_transfer_block.h>

Inheritance diagram for MGTransferBlockBase:
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Public Member Functions

 MGTransferBlockBase ()
 
 MGTransferBlockBase (const ConstraintMatrix &constraints, const MGConstrainedDoFs &mg_constrained_dofs)
 
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)
 
 DeclException0 (ExcMatricesNotBuilt)
 

Protected Attributes

std::vector< boolselected
 
unsigned int n_mg_blocks
 
std::vector< unsigned intmg_block
 
std::vector< std::vector
< types::global_dof_index > > 
sizes
 
std::vector
< types::global_dof_index
block_start
 
std::vector< std::vector
< types::global_dof_index > > 
mg_block_start
 
std::vector
< std_cxx1x::shared_ptr
< BlockSparseMatrix< double > > > 
prolongation_matrices
 
std::vector< std::vector
< std::vector< std::pair
< unsigned int, unsigned int > > > > 
copy_indices
 
SmartPointer< const
ConstraintMatrix,
MGTransferBlockBase
constraints
 
SmartPointer< const
MGConstrainedDoFs,
MGTransferBlockBase
mg_constrained_dofs
 

Private Attributes

std::vector
< std_cxx1x::shared_ptr
< BlockSparsityPattern > > 
prolongation_sparsities
 

Detailed Description

Implementation of matrix generation for MGTransferBlock.

This is the base class for MGTransfer objects for systems of equations where multigrid is applied only to one ore some blocks, where a GlossBlock comprises all degrees of freedom generated by one base element.

Author
Guido Kanschat, 2001-2003

Definition at line 61 of file mg_transfer_block.h.

Constructor & Destructor Documentation

MGTransferBlockBase::MGTransferBlockBase ( )

Constructor without constraint matrices. Use this constructor only with discontinuous finite elements or with no local refinement.

MGTransferBlockBase::MGTransferBlockBase ( const ConstraintMatrix constraints,
const MGConstrainedDoFs mg_constrained_dofs 
)

Constructor with constraint matrices as well as mg_constrained_dofs.

Member Function Documentation

std::size_t MGTransferBlockBase::memory_consumption ( ) const

Memory used by this object.

template<int dim, int spacedim>
void MGTransferBlockBase::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 and others to restrict the transfer matrices to certain blocks.

MGTransferBlockBase::DeclException0 ( ExcMatricesNotBuilt  )
protected

Call build_matrices() function first.

Member Data Documentation

std::vector<bool> MGTransferBlockBase::selected
protected

Flag of selected blocks.

The transfer operators only act on the blocks having a true entry here.

Definition at line 106 of file mg_transfer_block.h.

unsigned int MGTransferBlockBase::n_mg_blocks
protected

Number of blocks of multigrid vector.

Definition at line 112 of file mg_transfer_block.h.

std::vector<unsigned int> MGTransferBlockBase::mg_block
protected

For each block of the whole block vector, list to what block of the multigrid vector it is mapped. Since depending on selected, there may be fewer mutlilevel blocks than original blocks, some of the entries may be illegal unsigned integers.

Definition at line 126 of file mg_transfer_block.h.

std::vector<std::vector<types::global_dof_index> > MGTransferBlockBase::sizes
mutableprotected

Sizes of the multi-level vectors.

Definition at line 131 of file mg_transfer_block.h.

std::vector<types::global_dof_index> MGTransferBlockBase::block_start
protected

Start index of each block.

Definition at line 136 of file mg_transfer_block.h.

std::vector<std::vector<types::global_dof_index> > MGTransferBlockBase::mg_block_start
protected

Start index of each block on all levels.

Definition at line 142 of file mg_transfer_block.h.

std::vector<std_cxx1x::shared_ptr<BlockSparseMatrix<double> > > MGTransferBlockBase::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 163 of file mg_transfer_block.h.

std::vector<std::vector<std::vector<std::pair<unsigned int, unsigned int> > > > MGTransferBlockBase::copy_indices
protected

Mapping for the copy_to/from_mg-functions. The indices into this vector are (in this order): global block number, level number. The data is first the global index inside the block, then the level index inside the block.

Definition at line 177 of file mg_transfer_block.h.

SmartPointer<const ConstraintMatrix, MGTransferBlockBase> MGTransferBlockBase::constraints
protected

The constraints of the global system.

Definition at line 182 of file mg_transfer_block.h.

SmartPointer<const MGConstrainedDoFs, MGTransferBlockBase> MGTransferBlockBase::mg_constrained_dofs
protected

The mg_constrained_dofs of the level systems.

Definition at line 188 of file mg_transfer_block.h.


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