dune-istl 2.10
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Dune::Amg::CoarsenCriterion< T > Class Template Reference

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

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

Inheritance diagram for Dune::Amg::CoarsenCriterion< T >:
Inheritance graph

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.
 
 CoarsenCriterion (const Dune::Amg::Parameters &parms)
 

Detailed Description

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

The criterion describing the stop criteria for the coarsening process.

Member Typedef Documentation

◆ AggregationCriterion

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

The criterion for tagging connections as strong and nodes as isolated. This might be e.g. SymmetricCriterion or UnSymmetricCriterion.

Constructor & Destructor Documentation

◆ CoarsenCriterion() [1/2]

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
maxLevelThe maximum number of levels allowed in the matrix hierarchy (default: 100).
coarsenTargetIf the number of nodes in the matrix is below this threshold the coarsening will stop (default: 1000).
minCoarsenRateIf the coarsening rate falls below this threshold the coarsening will stop (default: 1.2)
prolongDampThe damping factor to apply to the prolongated update (default: 1.6)
accumulateWhether to accumulate the data onto fewer processors on coarser levels.
useFixedOrderFlag 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.

◆ CoarsenCriterion() [2/2]

template<class T >
Dune::Amg::CoarsenCriterion< T >::CoarsenCriterion ( const Dune::Amg::Parameters & parms)
inline

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