5#ifndef GKO_PUBLIC_CORE_SOLVER_IDR_HPP_
6#define GKO_PUBLIC_CORE_SOLVER_IDR_HPP_
14#include <ginkgo/core/base/array.hpp>
15#include <ginkgo/core/base/exception_helpers.hpp>
16#include <ginkgo/core/base/lin_op.hpp>
17#include <ginkgo/core/base/math.hpp>
18#include <ginkgo/core/base/types.hpp>
19#include <ginkgo/core/config/config.hpp>
20#include <ginkgo/core/config/registry.hpp>
21#include <ginkgo/core/log/logger.hpp>
22#include <ginkgo/core/matrix/dense.hpp>
23#include <ginkgo/core/matrix/identity.hpp>
24#include <ginkgo/core/solver/solver_base.hpp>
25#include <ginkgo/core/stop/combined.hpp>
26#include <ginkgo/core/stop/criterion.hpp>
56template <
typename ValueType = default_precision>
65 using value_type = ValueType;
108 parameters_.
kappa = other;
141 GKO_DEPRECATED(
"Use set_complex_subspace instead")
161 parameters_type, Factory> {
215 config::make_type_descriptor<ValueType>());
218 void apply_impl(
const LinOp* b,
LinOp* x)
const override;
221 LinOp* x)
const override;
223 template <
typename VectorType>
224 void iterate(
const VectorType* dense_b, VectorType* dense_x)
const;
226 explicit Idr(std::shared_ptr<const Executor> exec)
230 explicit Idr(
const Factory* factory,
231 std::shared_ptr<const LinOp> system_matrix)
235 std::move(system_matrix), factory->get_parameters()},
236 parameters_{factory->get_parameters()}
241template <
typename ValueType>
245 static int num_vectors(
const Solver&);
247 static int num_arrays(
const Solver&);
249 static std::vector<std::string> op_names(
const Solver&);
251 static std::vector<std::string> array_names(
const Solver&);
253 static std::vector<int> scalars(
const Solver&);
255 static std::vector<int> vectors(
const Solver&);
258 constexpr static int residual = 0;
260 constexpr static int v = 1;
262 constexpr static int t = 2;
264 constexpr static int helper = 3;
266 constexpr static int m = 4;
268 constexpr static int g = 5;
270 constexpr static int u = 6;
272 constexpr static int subspace = 7;
274 constexpr static int f = 8;
276 constexpr static int c = 9;
278 constexpr static int omega = 10;
280 constexpr static int residual_norm = 11;
282 constexpr static int tht = 12;
284 constexpr static int alpha = 13;
286 constexpr static int one = 14;
288 constexpr static int minus_one = 15;
290 constexpr static int subspace_minus_one = 16;
293 constexpr static int stop = 0;
295 constexpr static int tmp = 1;
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
const dim< 2 > & get_size() const noexcept
Returns the size of the operator.
Definition lin_op.hpp:211
std::shared_ptr< const Executor > get_executor() const noexcept
Returns the Executor of the object.
Definition polymorphic_object.hpp:235
Linear operators which support transposition should implement the Transposable interface.
Definition lin_op.hpp:434
pnode describes a tree of properties.
Definition property_tree.hpp:28
This class stores additional context for creating Ginkgo objects from configuration files.
Definition registry.hpp:168
This class describes the value and index types to be used when building a Ginkgo type from a configur...
Definition type_descriptor.hpp:37
A LinOp implementing this interface stores a system matrix and stopping criterion factory.
Definition solver_base.hpp:788
IDR(s) is an efficient method for solving large nonsymmetric systems of linear equations.
Definition idr.hpp:60
void set_kappa(const remove_complex< ValueType > other)
Sets the kappa parameter of the solver.
Definition idr.hpp:106
void set_complex_subpsace(const bool other)
Sets the complex_subspace parameter of the solver.
Definition idr.hpp:142
void set_subspace_dim(const size_type other)
Sets the subspace dimension of the solver.
Definition idr.hpp:89
void set_deterministic(const bool other)
Sets the deterministic parameter of the solver.
Definition idr.hpp:123
bool apply_uses_initial_guess() const override
Return true as iterative solvers use the data in x as an initial guess.
Definition idr.hpp:77
std::unique_ptr< LinOp > conj_transpose() const override
Returns a LinOp representing the conjugate transpose of the Transposable object.
void set_complex_subspace(const bool other)
Sets the complex_subspace parameter of the solver.
Definition idr.hpp:152
bool get_complex_subspace() const
Gets the complex_subspace parameter of the solver.
Definition idr.hpp:133
size_type get_subspace_dim() const
Gets the subspace dimension of the solver.
Definition idr.hpp:83
static parameters_type parse(const config::pnode &config, const config::registry &context, const config::type_descriptor &td_for_child=config::make_type_descriptor< ValueType >())
Create the parameters from the property_tree.
bool get_deterministic() const
Gets the deterministic parameter of the solver.
Definition idr.hpp:116
std::unique_ptr< LinOp > transpose() const override
Returns a LinOp representing the transpose of the Transposable object.
remove_complex< ValueType > get_kappa() const
Gets the kappa parameter of the solver.
Definition idr.hpp:99
#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
typename detail::remove_complex_s< T >::type remove_complex
Obtain the type which removed the complex of complex/scalar type or the template parameter of class b...
Definition math.hpp:326
std::size_t size_type
Integral type used for allocation quantities.
Definition types.hpp:86
bool complex_subspace
If set to true, IDR will use a complex subspace S also for real problems, allowing for faster converg...
Definition idr.hpp:194
remove_complex< ValueType > kappa
Threshold to determine if Av_n and v_n are too close to being perpendicular.
Definition idr.hpp:174
bool deterministic
If set to true, the vectors spanning the subspace S are chosen deterministically.
Definition idr.hpp:185
size_type subspace_dim
Dimension of the subspace S.
Definition idr.hpp:166
Definition solver_base.hpp:841
Traits class providing information on the type and location of workspace vectors inside a solver.
Definition solver_base.hpp:239