5#ifndef GKO_PUBLIC_CORE_MULTIGRID_PGM_HPP_
6#define GKO_PUBLIC_CORE_MULTIGRID_PGM_HPP_
12#include <ginkgo/core/base/composition.hpp>
13#include <ginkgo/core/base/exception_helpers.hpp>
14#include <ginkgo/core/base/lin_op.hpp>
15#include <ginkgo/core/base/types.hpp>
16#include <ginkgo/core/matrix/csr.hpp>
17#include <ginkgo/core/matrix/dense.hpp>
18#include <ginkgo/core/multigrid/multigrid_level.hpp>
46template <
typename ValueType = default_precision,
typename IndexType =
int32>
53 using value_type = ValueType;
54 using index_type = IndexType;
63 return system_matrix_;
131 void apply_impl(
const LinOp* b,
LinOp* x)
const override
137 LinOp* x)
const override
142 explicit Pgm(std::shared_ptr<const Executor> exec)
146 explicit Pgm(
const Factory* factory,
147 std::shared_ptr<const LinOp> system_matrix)
149 EnableMultigridLevel<ValueType>(system_matrix),
150 parameters_{factory->get_parameters()},
151 system_matrix_{system_matrix},
152 agg_(factory->
get_executor(), system_matrix_->get_size()[0])
156 if (system_matrix_->get_size()[0] != 0) {
165 std::shared_ptr<const LinOp> system_matrix_{};
166 array<IndexType> agg_;
170template <
typename ValueType = default_precision,
typename IndexType =
int32>
171using AmgxPgm GKO_DEPRECATED(
172 "This class is deprecated and will be removed in the next "
The EnableLinOp mixin can be used to provide sensible default implementations of the majority of the ...
Definition lin_op.hpp:880
This mixin inherits from (a subclass of) PolymorphicObject and provides a base implementation of a ne...
Definition polymorphic_object.hpp:663
Definition lin_op.hpp:118
std::shared_ptr< const Executor > get_executor() const noexcept
Returns the Executor of the object.
Definition polymorphic_object.hpp:235
std::shared_ptr< Composition< ValueType > > get_composition() const
Returns the composition operators.
Definition composition.hpp:186
value_type * get_data() noexcept
Returns a pointer to the block of memory used to store the elements of the array.
Definition array.hpp:674
const value_type * get_const_data() const noexcept
Returns a constant pointer to the block of memory used to store the elements of the array.
Definition array.hpp:683
The EnableMultigridLevel gives the default implementation of MultigridLevel with composition and prov...
Definition multigrid_level.hpp:83
Parallel graph match (Pgm) is the aggregate method introduced in the paper M.
Definition pgm.hpp:48
const IndexType * get_const_agg() const noexcept
Returns the aggregate group.
Definition pgm.hpp:84
IndexType * get_agg() noexcept
Returns the aggregate group.
Definition pgm.hpp:75
std::shared_ptr< const LinOp > get_system_matrix() const
Returns the system operator (matrix) of the linear system.
Definition pgm.hpp:61
#define GKO_CREATE_FACTORY_PARAMETERS(_parameters_name, _factory_name)
This Macro will generate a new type containing the parameters for the factory _factory_name.
Definition abstract_factory.hpp:280
#define GKO_FACTORY_PARAMETER_SCALAR(_name, _default)
Creates a scalar factory parameter in the factory parameters structure.
Definition abstract_factory.hpp:445
#define GKO_ENABLE_BUILD_METHOD(_factory_name)
Defines a build method for the factory, simplifying its construction by removing the repetitive typin...
Definition abstract_factory.hpp:394
#define GKO_ENABLE_LIN_OP_FACTORY(_lin_op, _parameters_name, _factory_name)
This macro will generate a default implementation of a LinOpFactory for the LinOp subclass it is defi...
Definition lin_op.hpp:1018
The Ginkgo namespace.
Definition abstract_factory.hpp:20
constexpr T one()
Returns the multiplicative identity for T.
Definition math.hpp:775
double max_unassigned_ratio
The maximum ratio of unassigned number, which is valid in the interval 0.0 ~ 1.0.
Definition pgm.hpp:104