Dune::CompressionStatistics< size_type > Struct Template Reference

Statistics about compression achieved in implicit mode. More...

#include <dune/istl/bcrsmatrix.hh>

Public Attributes
double	avg
	average number of non-zeroes per row.
size_type	maximum
	maximum number of non-zeroes per row.
size_type	overflow_total
	total number of elements written to the overflow area during construction.
double	mem_ratio
	fraction of wasted memory resulting from non-used overflow area. More...

Detailed Description

template<typename size_type>
struct Dune::CompressionStatistics< size_type >

Statistics about compression achieved in implicit mode.

To enable the user to tune parameters of the implicit build mode of a Dune::BCRSMatrix manually, some statistics are exported upon during the compression step.

Member Data Documentation

mem_ratio

template<typename size_type >

double Dune::CompressionStatistics< size_type >::mem_ratio

fraction of wasted memory resulting from non-used overflow area.

mem_ratio is equal to nonzeros()/(# allocated matrix entries).

Referenced by Dune::BCRSMatrix< B, A >::compress().

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

• dune/istl/bcrsmatrix.hh