imbalance_limit is a strategy_type which decides the number of stored elements per row of the ell part according to the percent. More...

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

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

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

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Public Member Functions
	imbalance_limit (double percent=0.8)
	Creates a imbalance_limit strategy. More...

size_type	compute_ell_num_stored_elements_per_row (array< size_type > *row_nnz) const override
	Computes the number of stored elements per row of the ell part. More...

auto	get_percentage () const
	Get the percent setting. More...

Public Member Functions inherited from gko::matrix::Hybrid< ValueType, IndexType >::strategy_type
	strategy_type ()
	Creates a strategy_type.

void	compute_hybrid_config (const array< size_type > &row_nnz, size_type ell_num_stored_elements_per_row, size_type coo_nnz)
	Computes the config of the Hybrid matrix (ell_num_stored_elements_per_row and coo_nnz). More...

size_type	get_ell_num_stored_elements_per_row () const noexcept
	Returns the number of stored elements per row of the ell part. More...

size_type	get_coo_nnz () const noexcept
	Returns the number of nonzeros of the coo part. More...

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