|
std::shared_ptr< const LinOp > | get_system_matrix () const |
| Returns the system operator (matrix) of the linear system.
|
IndexType * | get_agg () noexcept |
| Returns the aggregate group.
|
const IndexType * | get_const_agg () const noexcept |
| Returns the aggregate group.
|
const parameters_type & | get_parameters () const |
const Pgm< default_precision, int32 > * | apply (ptr_param< const LinOp > b, ptr_param< LinOp > x) const |
std::unique_ptr< Pgm< default_precision, int32 > > | create_default (std::shared_ptr< const Executor > exec) const |
std::unique_ptr< Pgm< default_precision, int32 > > | clone (std::shared_ptr< const Executor > exec) const |
Pgm< default_precision, int32 > * | copy_from (const PolymorphicObject *other) |
Pgm< default_precision, int32 > * | move_from (ptr_param< PolymorphicObject > other) |
Pgm< default_precision, int32 > * | clear () |
LinOp * | apply (ptr_param< const LinOp > b, ptr_param< LinOp > x) |
| Applies a linear operator to a vector (or a sequence of vectors).
|
const LinOp * | apply (ptr_param< const LinOp > b, ptr_param< LinOp > x) const |
LinOp * | apply (ptr_param< const LinOp > alpha, ptr_param< const LinOp > b, ptr_param< const LinOp > beta, ptr_param< LinOp > x) |
| Performs the operation x = alpha * op(b) + beta * x.
|
const LinOp * | apply (ptr_param< const LinOp > alpha, ptr_param< const LinOp > b, ptr_param< const LinOp > beta, ptr_param< LinOp > x) const |
const dim< 2 > & | get_size () const noexcept |
| Returns the size of the operator.
|
virtual bool | apply_uses_initial_guess () const |
| Returns true if the linear operator uses the data given in x as an initial guess.
|
LinOp & | operator= (const LinOp &)=default |
| Copy-assigns a LinOp.
|
LinOp & | operator= (LinOp &&other) |
| Move-assigns a LinOp.
|
| LinOp (const LinOp &)=default |
| Copy-constructs a LinOp.
|
| LinOp (LinOp &&other) |
| Move-constructs a LinOp.
|
std::unique_ptr< LinOp > | create_default (std::shared_ptr< const Executor > exec) const |
std::unique_ptr< LinOp > | clone (std::shared_ptr< const Executor > exec) const |
LinOp * | copy_from (const PolymorphicObject *other) |
LinOp * | move_from (ptr_param< PolymorphicObject > other) |
LinOp * | clear () |
PolymorphicObject & | operator= (const PolymorphicObject &) |
std::unique_ptr< PolymorphicObject > | create_default (std::shared_ptr< const Executor > exec) const |
| Creates a new "default" object of the same dynamic type as this object.
|
std::unique_ptr< PolymorphicObject > | create_default () const |
| Creates a new "default" object of the same dynamic type as this object.
|
std::unique_ptr< PolymorphicObject > | clone (std::shared_ptr< const Executor > exec) const |
| Creates a clone of the object.
|
std::unique_ptr< PolymorphicObject > | clone () const |
| Creates a clone of the object.
|
PolymorphicObject * | copy_from (const PolymorphicObject *other) |
| Copies another object into this object.
|
template<typename Derived, typename Deleter> |
std::enable_if_t< std::is_base_of< PolymorphicObject, std::decay_t< Derived > >::value, PolymorphicObject > * | copy_from (std::unique_ptr< Derived, Deleter > &&other) |
| Moves another object into this object.
|
template<typename Derived, typename Deleter> |
std::enable_if_t< std::is_base_of< PolymorphicObject, std::decay_t< Derived > >::value, PolymorphicObject > * | copy_from (const std::unique_ptr< Derived, Deleter > &other) |
| Copies another object into this object.
|
PolymorphicObject * | copy_from (const std::shared_ptr< const PolymorphicObject > &other) |
| Copies another object into this object.
|
PolymorphicObject * | move_from (ptr_param< PolymorphicObject > other) |
| Moves another object into this object.
|
PolymorphicObject * | clear () |
| Transforms the object into its default state.
|
std::shared_ptr< const Executor > | get_executor () const noexcept |
| Returns the Executor of the object.
|
void | add_logger (std::shared_ptr< const Logger > logger) override |
| Adds a new logger to the list of subscribed loggers.
|
void | remove_logger (const Logger *logger) override |
| Removes a logger from the list of subscribed loggers.
|
const std::vector< std::shared_ptr< const Logger > > & | get_loggers () const override |
| Returns the vector containing all loggers registered at this object.
|
void | clear_loggers () override |
| Remove all loggers registered at this object.
|
void | remove_logger (ptr_param< const Logger > logger) |
void | convert_to (result_type *result) const override |
void | move_to (result_type *result) override |
std::shared_ptr< const LinOp > | get_fine_op () const override |
| Returns the operator on fine level.
|
std::shared_ptr< const LinOp > | get_restrict_op () const override |
| Returns the restrict operator.
|
std::shared_ptr< const LinOp > | get_coarse_op () const override |
| Returns the operator on coarse level.
|
std::shared_ptr< const LinOp > | get_prolong_op () const override |
| Returns the prolong operator.
|
std::shared_ptr< Composition< default_precision > > | get_composition () const |
| Returns the composition operators.
|
std::shared_ptr< const LinOp > | get_operator_at (size_type index) const |
| Returns the operator at index-th position of composition.
|
template<typename ValueType = default_precision, typename IndexType = int32>
class gko::multigrid::Pgm< ValueType, IndexType >
Parallel graph match (Pgm) is the aggregate method introduced in the paper M.
Naumov et al., "AmgX: A Library for GPU Accelerated Algebraic
Multigrid and Preconditioned Iterative Methods". Current implementation only contains size = 2 version.
Pgm creates the aggregate group according to the matrix value not the structure. Pgm gives two steps (one-phase handshaking) to group the elements. 1: get the strongest neighbor of each unaggregated element. 2: group the elements whose strongest neighbor is each other. repeating until reaching the given conditions. After that, the un-aggregated elements are assigned to an aggregated group or are left alone.
- Template Parameters
-
ValueType | precision of matrix elements |
IndexType | precision of matrix indexes |