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Ginkgo Generated from branch based on master. Ginkgo version 1.7.0
A numerical linear algebra library targeting many-core architectures
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SparsityCsr is a matrix format which stores only the sparsity pattern of a sparse matrix by compressing each row of the matrix (compressed sparse row format). More...
#include <ginkgo/core/matrix/sparsity_csr.hpp>
Public Types | |
using | value_type = ValueType |
using | index_type = IndexType |
using | transposed_type = SparsityCsr<IndexType, ValueType> |
using | mat_data = matrix_data<ValueType, IndexType> |
using | device_mat_data = device_matrix_data<ValueType, IndexType> |
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using | result_type |
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using | result_type = ResultType |
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using | value_type = ValueType |
using | index_type = IndexType |
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using | value_type = ValueType |
using | index_type = IndexType |
Public Member Functions | |
void | convert_to (Csr< ValueType, IndexType > *result) const override |
void | move_to (Csr< ValueType, IndexType > *result) override |
void | convert_to (Dense< ValueType > *result) const override |
void | move_to (Dense< ValueType > *result) override |
void | read (const mat_data &data) override |
Reads a matrix from a matrix_data structure. | |
void | read (const device_mat_data &data) override |
Reads a matrix from a device_matrix_data structure. | |
void | read (device_mat_data &&data) override |
Reads a matrix from a device_matrix_data structure. | |
void | write (mat_data &data) const override |
Writes a matrix to a matrix_data structure. | |
std::unique_ptr< LinOp > | transpose () const override |
Returns a LinOp representing the transpose of the Transposable object. | |
std::unique_ptr< LinOp > | conj_transpose () const override |
Returns a LinOp representing the conjugate transpose of the Transposable object. | |
std::unique_ptr< SparsityCsr > | to_adjacency_matrix () const |
Transforms the sparsity matrix to an adjacency matrix. | |
void | sort_by_column_index () |
Sorts each row by column index. | |
bool | is_sorted_by_column_index () const |
index_type * | get_col_idxs () noexcept |
Returns the column indices of the matrix. | |
const index_type * | get_const_col_idxs () const noexcept |
Returns the column indices of the matrix. | |
index_type * | get_row_ptrs () noexcept |
Returns the row pointers of the matrix. | |
const index_type * | get_const_row_ptrs () const noexcept |
Returns the row pointers of the matrix. | |
value_type * | get_value () noexcept |
Returns the value stored in the matrix. | |
const value_type * | get_const_value () const noexcept |
Returns the value stored in the matrix. | |
size_type | get_num_nonzeros () const noexcept |
Returns the number of elements explicitly stored in the matrix. | |
SparsityCsr & | operator= (const SparsityCsr &) |
Copy-assigns a SparsityCsr matrix. | |
SparsityCsr & | operator= (SparsityCsr &&) |
Move-assigns a SparsityCsr matrix. | |
SparsityCsr (const SparsityCsr &) | |
Copy-constructs a SparsityCsr matrix. | |
SparsityCsr (SparsityCsr &&) | |
Move-constructs a SparsityCsr matrix. | |
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const ConcreteLinOp * | apply (ptr_param< const LinOp > b, ptr_param< LinOp > x) const |
ConcreteLinOp * | apply (ptr_param< const LinOp > b, ptr_param< LinOp > x) |
const ConcreteLinOp * | apply (ptr_param< const LinOp > alpha, ptr_param< const LinOp > b, ptr_param< const LinOp > beta, ptr_param< LinOp > x) const |
ConcreteLinOp * | apply (ptr_param< const LinOp > alpha, ptr_param< const LinOp > b, ptr_param< const LinOp > beta, ptr_param< LinOp > x) |
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std::unique_ptr< AbstractObject > | create_default (std::shared_ptr< const Executor > exec) const |
std::unique_ptr< AbstractObject > | create_default () const |
std::unique_ptr< AbstractObject > | clone (std::shared_ptr< const Executor > exec) const |
std::unique_ptr< AbstractObject > | clone () const |
AbstractObject * | copy_from (const PolymorphicObject *other) |
template<typename Derived > | |
std::enable_if_t< std::is_base_of< PolymorphicObject, std::decay_t< Derived > >::value, AbstractObject > * | copy_from (std::unique_ptr< Derived > &&other) |
template<typename Derived > | |
std::enable_if_t< std::is_base_of< PolymorphicObject, std::decay_t< Derived > >::value, AbstractObject > * | copy_from (const std::unique_ptr< Derived > &other) |
AbstractObject * | copy_from (const std::shared_ptr< const PolymorphicObject > &other) |
AbstractObject * | move_from (ptr_param< PolymorphicObject > other) |
AbstractObject * | clear () |
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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. | |
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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. | |
void | remove_logger (ptr_param< const Logger > logger) |
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. | |
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void | remove_logger (ptr_param< const Logger > logger) |
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void | convert_to (result_type *result) const override |
Converts the implementer to an object of type result_type. | |
void | move_to (result_type *result) override |
Converts the implementer to an object of type result_type by moving data from this object. | |
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virtual void | convert_to (result_type *result) const =0 |
Converts the implementer to an object of type result_type. | |
void | convert_to (ptr_param< result_type > result) const |
virtual void | move_to (result_type *result)=0 |
Converts the implementer to an object of type result_type by moving data from this object. | |
void | move_to (ptr_param< result_type > result) |
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void | read (const matrix_assembly_data< ValueType, IndexType > &data) |
Reads a matrix from a matrix_assembly_data structure. | |
Static Public Member Functions | |
static std::unique_ptr< const SparsityCsr > | create_const (std::shared_ptr< const Executor > exec, const dim< 2 > &size, gko::detail::const_array_view< IndexType > &&col_idxs, gko::detail::const_array_view< IndexType > &&row_ptrs, ValueType value=one< ValueType >()) |
Creates a constant (immutable) SparsityCsr matrix from constant arrays. | |
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template<typename... Args> | |
static std::unique_ptr< ConcreteType > | create (Args &&... args) |
Friends | |
class | EnableCreateMethod< SparsityCsr > |
class | EnablePolymorphicObject< SparsityCsr, LinOp > |
class | Csr< ValueType, IndexType > |
class | Dense< ValueType > |
class | Fbcsr< ValueType, IndexType > |
SparsityCsr is a matrix format which stores only the sparsity pattern of a sparse matrix by compressing each row of the matrix (compressed sparse row format).
The values of the nonzero elements are stored as a value array of length 1. All the values in the matrix are equal to this value. By default, this value is set to 1.0. A row pointer array also stores the linearized starting index of each row. An additional column index array is used to identify the column where a nonzero is present.
ValueType | precision of vectors in apply |
IndexType | precision of matrix indexes |
gko::matrix::SparsityCsr< ValueType, IndexType >::SparsityCsr | ( | const SparsityCsr< ValueType, IndexType > & | ) |
Copy-constructs a SparsityCsr matrix.
Inherits executor, strategy and data.
gko::matrix::SparsityCsr< ValueType, IndexType >::SparsityCsr | ( | SparsityCsr< ValueType, IndexType > && | ) |
Move-constructs a SparsityCsr matrix.
Inherits executor, moves the data and leaves the moved-from object in an empty state (0x0 LinOp with unchanged executor, no nonzeros and valid row pointers).
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overridevirtual |
Returns a LinOp representing the conjugate transpose of the Transposable object.
Implements gko::Transposable.
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inlinestatic |
Creates a constant (immutable) SparsityCsr matrix from constant arrays.
exec | the executor to create the matrix on |
size | the dimensions of the matrix |
values | the value array of the matrix |
col_idxs | the column index array of the matrix |
row_ptrs | the row pointer array of the matrix |
strategy | the strategy the matrix uses for SpMV operations |
References gko::one().
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inlinenoexcept |
Returns the column indices of the matrix.
References gko::array< ValueType >::get_data().
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inlinenoexcept |
Returns the column indices of the matrix.
References gko::array< ValueType >::get_const_data().
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inlinenoexcept |
Returns the row pointers of the matrix.
References gko::array< ValueType >::get_const_data().
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inlinenoexcept |
Returns the value stored in the matrix.
References gko::array< ValueType >::get_const_data().
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inlinenoexcept |
Returns the number of elements explicitly stored in the matrix.
References gko::array< ValueType >::get_num_elems().
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inlinenoexcept |
Returns the row pointers of the matrix.
References gko::array< ValueType >::get_data().
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inlinenoexcept |
Returns the value stored in the matrix.
References gko::array< ValueType >::get_data().
SparsityCsr & gko::matrix::SparsityCsr< ValueType, IndexType >::operator= | ( | const SparsityCsr< ValueType, IndexType > & | ) |
Copy-assigns a SparsityCsr matrix.
Preserves executor, copies everything else.
SparsityCsr & gko::matrix::SparsityCsr< ValueType, IndexType >::operator= | ( | SparsityCsr< ValueType, IndexType > && | ) |
Move-assigns a SparsityCsr matrix.
Preserves executor, moves the data and leaves the moved-from object in an empty state (0x0 LinOp with unchanged executor, no nonzeros and valid row pointers).
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overridevirtual |
Reads a matrix from a device_matrix_data structure.
data | the device_matrix_data structure. |
Reimplemented from gko::ReadableFromMatrixData< ValueType, IndexType >.
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overridevirtual |
Reads a matrix from a matrix_data structure.
data | the matrix_data structure |
Implements gko::ReadableFromMatrixData< ValueType, IndexType >.
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overridevirtual |
Reads a matrix from a device_matrix_data structure.
The structure may be emptied by this function.
data | the device_matrix_data structure. |
Reimplemented from gko::ReadableFromMatrixData< ValueType, IndexType >.
std::unique_ptr< SparsityCsr > gko::matrix::SparsityCsr< ValueType, IndexType >::to_adjacency_matrix | ( | ) | const |
Transforms the sparsity matrix to an adjacency matrix.
As the adjacency matrix has to be square, the input SparsityCsr matrix for this function to work has to be square.
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overridevirtual |
Returns a LinOp representing the transpose of the Transposable object.
Implements gko::Transposable.
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overridevirtual |
Writes a matrix to a matrix_data structure.
data | the matrix_data structure |
Implements gko::WritableToMatrixData< ValueType, IndexType >.