Dune::Amg::CoarsenCriterion< T > Class Template Reference

The criterion describing the stop criteria for the coarsening process. More...

#include <dune/istl/paamg/matrixhierarchy.hh>

Public Types
typedef T	AggregationCriterion
	The criterion for tagging connections as strong and nodes as isolated. This might be e.g. SymmetricCriterion or UnSymmetricCriterion.

Public Member Functions
	CoarsenCriterion (int maxLevel=100, int coarsenTarget=1000, double minCoarsenRate=1.2, double prolongDamp=1.6, AccumulationMode accumulate=successiveAccu, bool useFixedOrder=false)
	Constructor. More...

Detailed Description

template<class T>
class Dune::Amg::CoarsenCriterion< T >

The criterion describing the stop criteria for the coarsening process.

Constructor & Destructor Documentation

CoarsenCriterion()

template<class T >

Dune::Amg::CoarsenCriterion< T >::CoarsenCriterion ( int  maxLevel = 100, int  coarsenTarget = 1000, double  minCoarsenRate = 1.2, double  prolongDamp = 1.6, AccumulationMode  accumulate = successiveAccu, bool  useFixedOrder = false  )

inline

Constructor.

Parameters

maxLevel	The maximum number of levels allowed in the matrix hierarchy (default: 100).
coarsenTarget	If the number of nodes in the matrix is below this threshold the coarsening will stop (default: 1000).
minCoarsenRate	If the coarsening rate falls below this threshold the coarsening will stop (default: 1.2)
prolongDamp	The damping factor to apply to the prolongated update (default: 1.6)
accumulate	Whether to accumulate the data onto fewer processors on coarser levels.
useFixedOrder	Flag indicating if creating indices for the coarser level should be done in a fixed order, i.e., the order in which the rows were sent. If set to true, this makes the runs reproducible but it might slow down performance.

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

• dune/istl/paamg/matrixhierarchy.hh