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< bool > | selected |
unsigned int | n_mg_blocks |
std::vector< unsigned int > | mg_block |
std::vector< std::vector < unsigned int > > | sizes |
std::vector< unsigned int > | block_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 |
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.
Memory used by this object.
Reimplemented in MGTransferBlockSelect< number >.
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.
std::vector<bool> MGTransferBlockBase::selected [protected] |
Flag of selected blocks.
The transfer operators only act on the blocks having a true
entry here.
unsigned int MGTransferBlockBase::n_mg_blocks [protected] |
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.