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Reference documentation for deal.II version 9.1.0-pre
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Reference documentation for deal.II version 9.1.0-pre
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#include <deal.II/multigrid/multigrid.h>
Public Member Functions | |
| PreconditionMG (const DoFHandler< dim > &dof_handler, Multigrid< VectorType > &mg, const TRANSFER &transfer) | |
| PreconditionMG (const std::vector< const DoFHandler< dim > * > &dof_handler, Multigrid< VectorType > &mg, const TRANSFER &transfer) | |
| bool | empty () const |
| template<class OtherVectorType > | |
| void | vmult (OtherVectorType &dst, const OtherVectorType &src) const |
| template<class OtherVectorType > | |
| void | vmult_add (OtherVectorType &dst, const OtherVectorType &src) const |
| template<class OtherVectorType > | |
| void | Tvmult (OtherVectorType &dst, const OtherVectorType &src) const |
| template<class OtherVectorType > | |
| void | Tvmult_add (OtherVectorType &dst, const OtherVectorType &src) const |
| IndexSet | locally_owned_range_indices (const unsigned int block=0) const |
| IndexSet | locally_owned_domain_indices (const unsigned int block=0) const |
| MPI_Comm | get_mpi_communicator () const |
| boost::signals2::connection | connect_transfer_to_mg (const std::function< void(bool)> &slot) |
| boost::signals2::connection | connect_transfer_to_global (const std::function< void(bool)> &slot) |
 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 (const char *identifier=nullptr) const |
| void | unsubscribe (const char *identifier=nullptr) 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) |
Private Attributes | |
| std::vector< SmartPointer< const DoFHandler< dim >, PreconditionMG< dim, VectorType, TRANSFER > > > | dof_handler_vector |
| std::vector< const DoFHandler< dim > * > | dof_handler_vector_raw |
| SmartPointer< Multigrid< VectorType >, PreconditionMG< dim, VectorType, TRANSFER > > | multigrid |
| SmartPointer< const TRANSFER, PreconditionMG< dim, VectorType, TRANSFER > > | transfer |
| const bool | uses_dof_handler_vector |
| mg::Signals | signals |
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) |
Multi-level preconditioner. Here, we collect all information needed for multi-level preconditioning and provide the standard interface for LAC iterative methods.
Furthermore, it needs functions void copy_to_mg(const VectorType&) to store src in the right hand side of the multi-level method and void copy_from_mg(VectorType&) to store the result of the v-cycle in dst.
If VectorType is in fact a block vector and the TRANSFER object supports use of a separate DoFHandler for each block, this class also allows to be initialized with a separate DoFHandler for each block.
Definition at line 498 of file multigrid.h.
| PreconditionMG< dim, VectorType, TRANSFER >::PreconditionMG | ( | const DoFHandler< dim > & | dof_handler, |
| Multigrid< VectorType > & | mg, | ||
| const TRANSFER & | transfer | ||
| ) |
Constructor. Arguments are the multigrid object, pre-smoother, post- smoother and coarse grid solver.
| PreconditionMG< dim, VectorType, TRANSFER >::PreconditionMG | ( | const std::vector< const DoFHandler< dim > * > & | dof_handler, |
| Multigrid< VectorType > & | mg, | ||
| const TRANSFER & | transfer | ||
| ) |
Same as above in case every component of a block vector uses its own DoFHandler.
| bool PreconditionMG< dim, VectorType, TRANSFER >::empty | ( | ) | const |
Dummy function needed by other classes.
| void PreconditionMG< dim, VectorType, TRANSFER >::vmult | ( | OtherVectorType & | dst, |
| const OtherVectorType & | src | ||
| ) | const |
Preconditioning operator. Calls the vcycle function of the MG object passed to the constructor.
This is the operator used by LAC iterative solvers.
| void PreconditionMG< dim, VectorType, TRANSFER >::vmult_add | ( | OtherVectorType & | dst, |
| const OtherVectorType & | src | ||
| ) | const |
Preconditioning operator. Calls the vcycle function of the MG object passed to the constructor.
| void PreconditionMG< dim, VectorType, TRANSFER >::Tvmult | ( | OtherVectorType & | dst, |
| const OtherVectorType & | src | ||
| ) | const |
Transposed preconditioning operator.
Not implemented, but the definition may be needed.
| void PreconditionMG< dim, VectorType, TRANSFER >::Tvmult_add | ( | OtherVectorType & | dst, |
| const OtherVectorType & | src | ||
| ) | const |
Transposed preconditioning operator.
Not implemented, but the definition may be needed.
| IndexSet PreconditionMG< dim, VectorType, TRANSFER >::locally_owned_range_indices | ( | const unsigned int | block = 0 | ) | const |
Return the partitioning of the range space of this preconditioner, i.e., the partitioning of the vectors that are result from matrix-vector products. By default, the respective information for the first DoFHandler object are returned.
| IndexSet PreconditionMG< dim, VectorType, TRANSFER >::locally_owned_domain_indices | ( | const unsigned int | block = 0 | ) | const |
Return the partitioning of the domain space of this preconditioner, i.e., the partitioning of the vectors this matrix has to be multiplied with. By default, the respective information for the first DoFHandler object are returned.
| MPI_Comm PreconditionMG< dim, VectorType, TRANSFER >::get_mpi_communicator | ( | ) | const |
Return the MPI communicator object in use with this preconditioner.
| boost::signals2::connection PreconditionMG< dim, VectorType, TRANSFER >::connect_transfer_to_mg | ( | const std::function< void(bool)> & | slot | ) |
Connect a function to mg::Signals::transfer_to_mg.
| boost::signals2::connection PreconditionMG< dim, VectorType, TRANSFER >::connect_transfer_to_global | ( | const std::function< void(bool)> & | slot | ) |
Connect a function to mg::Signals::transfer_to_global.
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Associated DoFHandler.
Definition at line 601 of file multigrid.h.
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Storage for the pointers to the DoFHandler objects without SmartPointer wrapper.
Definition at line 607 of file multigrid.h.
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The multigrid object.
Definition at line 613 of file multigrid.h.
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Object for grid transfer.
Definition at line 619 of file multigrid.h.
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Flag to indicate if the object is initialized with a single DoFHandler or with one for each block.
Definition at line 625 of file multigrid.h.
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Signals used by this object
Definition at line 630 of file multigrid.h.
1.8.11
