gko::matrix::Hybrid< ValueType, IndexType >::imbalance_limit Class Reference

#include <ginkgo/core/matrix/hybrid.hpp>

Inheritance diagram for gko::matrix::Hybrid< ValueType, IndexType >::imbalance_limit:

Public Member Functions
	imbalance_limit (double percent=0.8)
size_type	compute_ell_num_stored_elements_per_row (array< size_type > *row_nnz) const override
auto	get_percentage () const
Public Member Functions inherited from gko::matrix::Hybrid< ValueType, IndexType >::strategy_type
	strategy_type ()
void	compute_hybrid_config (const array< size_type > &row_nnz, size_type *ell_num_stored_elements_per_row, size_type *coo_nnz)
size_type	get_ell_num_stored_elements_per_row () const noexcept
size_type	get_coo_nnz () const noexcept

Additional Inherited Members
Protected Member Functions inherited from gko::matrix::Hybrid< ValueType, IndexType >::strategy_type
size_type	compute_coo_nnz (const array< size_type > &row_nnz) const

Detailed Description

template<typename ValueType = default_precision, typename IndexType = int32>
class gko::matrix::Hybrid< ValueType, IndexType >::imbalance_limit

imbalance_limit is a strategy_type which decides the number of stored elements per row of the ell part according to the percent. It sorts the number of nonzeros of each row and takes the value at the position floor(percent * num_row) as the number of stored elements per row of the ell part. Thus, at least percent rows of all are in the ell part.

Constructor & Destructor Documentation

imbalance_limit()

template<typename ValueType = default_precision, typename IndexType = int32>

gko::matrix::Hybrid< ValueType, IndexType >::imbalance_limit::imbalance_limit ( double  percent = 0.8 )

inlineexplicit

Creates a imbalance_limit strategy.

Parameters

percent

the row_nnz[floor(num_rows*percent)] is the number of stored elements per row of the ell part

Member Function Documentation

compute_ell_num_stored_elements_per_row()

template<typename ValueType = default_precision, typename IndexType = int32>

size_type gko::matrix::Hybrid< ValueType, IndexType >::imbalance_limit::compute_ell_num_stored_elements_per_row ( array< size_type > *  row_nnz ) const

inlineoverridevirtual

Computes the number of stored elements per row of the ell part.

Parameters

row_nnz

the number of nonzeros of each row

Returns

the number of stored elements per row of the ell part

Implements gko::matrix::Hybrid< ValueType, IndexType >::strategy_type.

References gko::array< ValueType >::get_data(), and gko::array< ValueType >::get_size().

Referenced by gko::matrix::Hybrid< ValueType, IndexType >::imbalance_bounded_limit::compute_ell_num_stored_elements_per_row(), and gko::matrix::Hybrid< ValueType, IndexType >::minimal_storage_limit::compute_ell_num_stored_elements_per_row().

get_percentage()

template<typename ValueType = default_precision, typename IndexType = int32>

auto gko::matrix::Hybrid< ValueType, IndexType >::imbalance_limit::get_percentage ( ) const

inline

Get the percent setting

Returns

percent

Referenced by gko::matrix::Hybrid< ValueType, IndexType >::imbalance_bounded_limit::get_percentage(), and gko::matrix::Hybrid< ValueType, IndexType >::minimal_storage_limit::get_percentage().

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The documentation for this class was generated from the following file:

• ginkgo/core/matrix/hybrid.hpp