Detailed Description

Convergence criterion applying absolute or relative tolerances individually to each component of the whole residual vector.

A check of the solution increment is not done. If both an absolute and a relative tolerances are specified, at least one of them has to be satisfied.

Definition at line 27 of file ConvergenceCriterionPerComponentResidual.h.

#include <ConvergenceCriterionPerComponentResidual.h>

Inheritance diagram for NumLib::ConvergenceCriterionPerComponentResidual:

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Collaboration diagram for NumLib::ConvergenceCriterionPerComponentResidual:

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Public Member Functions
	ConvergenceCriterionPerComponentResidual (std::vector< double > &&absolute_tolerances, std::vector< double > &&relative_tolerances, const MathLib::VecNormType norm_type)

bool	hasDeltaXCheck () const override

bool	hasResidualCheck () const override

void	checkDeltaX (const GlobalVector &minus_delta_x, GlobalVector const &x) override

void	checkResidual (const GlobalVector &residual) override
	Check if the residual satisfies the convergence criterion. More...

void	setDOFTable (const LocalToGlobalIndexMap &dof_table, MeshLib::Mesh const &mesh) override
	Sets the d.o.f. table used to extract data for a specific component. More...

Public Member Functions inherited from NumLib::ConvergenceCriterionPerComponent
	ConvergenceCriterionPerComponent (const MathLib::VecNormType norm_type)

Public Member Functions inherited from NumLib::ConvergenceCriterion
	ConvergenceCriterion (const MathLib::VecNormType norm_type)

virtual void	preFirstIteration ()

virtual void	setNoFirstIteration ()

virtual void	reset ()

virtual bool	isSatisfied () const
	Tell if the convergence criterion is satisfied. More...

MathLib::VecNormType	getVectorNormType () const

virtual	~ConvergenceCriterion ()=default

Private Attributes
const std::vector< double >	_abstols

const std::vector< double >	_reltols

LocalToGlobalIndexMap const *	_dof_table = nullptr

MeshLib::Mesh const *	_mesh = nullptr

std::vector< double >	_residual_norms_0

Additional Inherited Members
Protected Attributes inherited from NumLib::ConvergenceCriterion
bool	_satisfied = true

bool	_is_first_iteration = true

const MathLib::VecNormType	_norm_type

Constructor & Destructor Documentation

◆ ConvergenceCriterionPerComponentResidual()

NumLib::ConvergenceCriterionPerComponentResidual::ConvergenceCriterionPerComponentResidual	(	std::vector< double > &&	absolute_tolerances,
		std::vector< double > &&	relative_tolerances,
		const MathLib::VecNormType	norm_type
	)

Definition at line 20 of file ConvergenceCriterionPerComponentResidual.cpp.

     : ConvergenceCriterionPerComponent(norm_type),
       _abstols(std::move(absolute_tolerances)),
       _reltols(std::move(relative_tolerances)),
       _residual_norms_0(_abstols.size())
 {
     if (_abstols.size() != _reltols.size())
     {
         OGS_FATAL(
             "The number of absolute and relative tolerances given must be the "
             "same.");
     }
  
     if (_abstols.empty())
     {
         OGS_FATAL("The given tolerances vector is empty.");
     }
 }

References _abstols, _reltols, and OGS_FATAL.

Member Function Documentation

◆ checkDeltaX()

void NumLib::ConvergenceCriterionPerComponentResidual::checkDeltaX	(	const GlobalVector &	minus_delta_x,
		GlobalVector const &	x
	)

overridevirtual

The function will only do diagnostic output and no actual check of the solution increment is made

Implements NumLib::ConvergenceCriterion.

Definition at line 44 of file ConvergenceCriterionPerComponentResidual.cpp.

 {
     if ((!_dof_table) || (!_mesh))
     {
         OGS_FATAL("D.o.f. table or mesh have not been set.");
     }
  
     for (unsigned global_component = 0; global_component < _abstols.size();
          ++global_component)
     {
         // TODO short cut if tol <= 0.0
         auto error_dx = norm(minus_delta_x, global_component, _norm_type,
                              *_dof_table, *_mesh);
         auto norm_x =
             norm(x, global_component, _norm_type, *_dof_table, *_mesh);
  
         INFO(
             "Convergence criterion, component {:d}: |dx|={:.4e}, |x|={:.4e}, "
             "|dx|/|x|={:.4e}",
             global_component, error_dx, norm_x,
             (norm_x == 0. ? std::numeric_limits<double>::quiet_NaN()
                           : (error_dx / norm_x)));
     }
 }

References _abstols, _dof_table, _mesh, NumLib::ConvergenceCriterion::_norm_type, INFO(), NumLib::norm(), and OGS_FATAL.

◆ checkResidual()

void NumLib::ConvergenceCriterionPerComponentResidual::checkResidual ( const GlobalVector & residual )

overridevirtual

Check if the residual satisfies the convergence criterion.

Implements NumLib::ConvergenceCriterion.

Definition at line 71 of file ConvergenceCriterionPerComponentResidual.cpp.

 {
     if ((!_dof_table) || (!_mesh))
     {
         OGS_FATAL("D.o.f. table or mesh have not been set.");
     }
  
     bool satisfied_abs = true;
     // Make sure that in the first iteration the relative residual tolerance is
     // not satisfied.
     bool satisfied_rel = !_is_first_iteration;
  
     for (unsigned global_component = 0; global_component < _abstols.size();
          ++global_component)
     {
         // TODO short cut if tol <= 0.0
         auto norm_res = norm(residual, global_component, _norm_type,
                              *_dof_table, *_mesh);
  
         if (_is_first_iteration) {
             INFO("Convergence criterion, component {:d}: |r0|={:.4e}",
                  global_component, norm_res);
             _residual_norms_0[global_component] = norm_res;
         } else {
             auto const norm_res0 = _residual_norms_0[global_component];
             INFO(
                 "Convergence criterion, component {:d}: |r|={:.4e}, "
                 "|r0|={:.4e}, "
                 "|r|/|r0|={:.4e}",
                 global_component, norm_res, norm_res0,
                 (norm_res0 == 0. ? std::numeric_limits<double>::quiet_NaN()
                                  : (norm_res / norm_res0)));
         }
  
         satisfied_abs = satisfied_abs && norm_res < _abstols[global_component];
         satisfied_rel =
             satisfied_rel &&
             checkRelativeTolerance(_reltols[global_component], norm_res,
                                    _residual_norms_0[global_component]);
     }
  
     _satisfied = _satisfied && (satisfied_abs || satisfied_rel);
 }

References _abstols, _dof_table, NumLib::ConvergenceCriterion::_is_first_iteration, _mesh, NumLib::ConvergenceCriterion::_norm_type, _reltols, _residual_norms_0, NumLib::ConvergenceCriterion::_satisfied, NumLib::checkRelativeTolerance(), INFO(), NumLib::norm(), and OGS_FATAL.

◆ hasDeltaXCheck()

bool NumLib::ConvergenceCriterionPerComponentResidual::hasDeltaXCheck ( ) const

inlineoverridevirtual

Tells if the change of the solution between iterations is checked.

Remarks: This method allows to save some computations if no such check will be done.

Implements NumLib::ConvergenceCriterion.

Definition at line 36 of file ConvergenceCriterionPerComponentResidual.h.

36 { return true; }

◆ hasResidualCheck()

bool NumLib::ConvergenceCriterionPerComponentResidual::hasResidualCheck ( ) const

inlineoverridevirtual

Tells if the residual is checked.

Remarks: This method allows to save some computations if no such check will be done.

Implements NumLib::ConvergenceCriterion.

Definition at line 37 of file ConvergenceCriterionPerComponentResidual.h.

37 { return true; }

◆ setDOFTable()

void NumLib::ConvergenceCriterionPerComponentResidual::setDOFTable	(	const LocalToGlobalIndexMap &	dof_table,
		MeshLib::Mesh const &	mesh
	)

overridevirtual

Sets the d.o.f. table used to extract data for a specific component.

Implements NumLib::ConvergenceCriterionPerComponent.

Definition at line 116 of file ConvergenceCriterionPerComponentResidual.cpp.

 {
     _dof_table = &dof_table;
     _mesh = &mesh;
  
     if (_dof_table->getNumberOfGlobalComponents() !=
         static_cast<int>(_abstols.size()))
     {
         OGS_FATAL(
             "The number of components in the DOF table and the number of "
             "tolerances given do not match.");
     }
 }