MGTransferBlockBase Class Reference
[Multilevel support]

Inheritance diagram for MGTransferBlockBase:

Inheritance graph
[legend]

List of all members.

Classes

class  ExcMatricesNotBuilt

Public Member Functions

unsigned int memory_consumption () const

Protected Member Functions

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

Protected Attributes

std::vector< boolselected
unsigned int n_mg_blocks
std::vector< unsigned intmg_block
std::vector< std::vector
< unsigned int > > 
sizes
std::vector< unsigned intblock_start
std::vector< std::vector
< unsigned int > > 
mg_block_start
std::vector
< std_cxx1x::shared_ptr
< BlockSparseMatrix< double > > > 
prolongation_matrices
std::vector< std::vector
< std::map< unsigned int,
unsigned int > > > 
copy_indices

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

Member Function Documentation

unsigned int MGTransferBlockBase::memory_consumption (  )  const

Memory used by this object.

Reimplemented in MGTransferBlockSelect< number >.

template<int dim, int spacedim>
void MGTransferBlockBase::build_matrices ( const DoFHandler< dim, spacedim > &  dof,
const MGDoFHandler< dim, spacedim > &  mg_dof 
) [inline, 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.


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.

Number of blocks of multigrid vector.

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.

std::vector<std::vector<unsigned int> > MGTransferBlockBase::sizes [mutable, protected]

Sizes of the multi-level vectors.

std::vector<unsigned int> MGTransferBlockBase::block_start [protected]

Start index of each block.

std::vector<std::vector<unsigned int> > MGTransferBlockBase::mg_block_start [protected]

Start index of each block on all levels.

std::vector<std_cxx1x::shared_ptr<BlockSparsityPattern> > MGTransferBlockBase::prolongation_sparsities [private]

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.

std::vector<std::vector<std::map<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.


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

deal.II documentation generated on Sat Aug 15 16:52:09 2009 by doxygen 1.5.9