StepChoosers::Random< VolumeDim > Class Template Reference

Changes the step size pseudo-randomly. Values are distributed uniformly in \(\log(dt)\). The current step is always accepted. More...

#include <Random.hpp>

Classes
struct	Maximum
struct	Minimum
struct	Seed

Public Types
using	options = tmpl::list<Minimum, Maximum, Seed>
using	argument_tags

Public Member Functions
	Random (double minimum, double maximum, size_t seed, const Options::Context &context={})
TimeStepRequest	operator() (const Element< VolumeDim > &element, const TimeStepId &time_step_id, double last_step) const
bool	uses_local_data () const override
	Whether the result can differ on different elements, so requiring communication to synchronize the result across the domain. This is ignored for LTS step changing.
bool	can_be_delayed () const override
	Whether the result can be applied with a delay.
void	pup (PUP::er &p) override
Public Member Functions inherited from StepChooser< StepChooserUse::Slab >
	WRAPPED_PUPable_abstract (StepChooser)
TimeStepRequest	desired_step (const double last_step, const db::DataBox< DbTags > &box) const
	The last_step parameter describes the step size to be adjusted. It may be the step size or the slab size, or may be infinite if the appropriate size cannot be determined.
Public Member Functions inherited from StepChooser< StepChooserUse::LtsStep >
	WRAPPED_PUPable_abstract (StepChooser)
TimeStepRequest	desired_step (const double last_step, const db::DataBox< DbTags > &box) const
	The last_step parameter describes the step size to be adjusted. It may be the step size or the slab size, or may be infinite if the appropriate size cannot be determined.

Static Public Attributes
static constexpr Options::String	help

Detailed Description

template<size_t VolumeDim>
class StepChoosers::Random< VolumeDim >

Changes the step size pseudo-randomly. Values are distributed uniformly in \(\log(dt)\). The current step is always accepted.

Note

This debugging StepChooser is not included in the standard_step_choosers list, but can be added to the factory_creation struct in the metavariables.

Member Typedef Documentation

argument_tags

template<size_t VolumeDim>

using StepChoosers::Random< VolumeDim >::argument_tags

Initial value:

 
      tmpl::list<domain::Tags::Element<VolumeDim>, Tags::TimeStepId>

Member Function Documentation

can_be_delayed()

template<size_t VolumeDim>

bool StepChoosers::Random< VolumeDim >::can_be_delayed ( ) const

overridevirtual

Whether the result can be applied with a delay.

StepChoosers setting the .end or .end_hard_limit fields of TimeStepRequest must return false here.

Implements StepChooser< StepChooserUse::Slab >.

uses_local_data()

template<size_t VolumeDim>

bool StepChoosers::Random< VolumeDim >::uses_local_data ( ) const

overridevirtual

Whether the result can differ on different elements, so requiring communication to synchronize the result across the domain. This is ignored for LTS step changing.

Note

As this is only used for slab-size changing, the last_step passed to the call operator is not considered local data.

Implements StepChooser< StepChooserUse::Slab >.

Member Data Documentation

help

template<size_t VolumeDim>

Options::String StepChoosers::Random< VolumeDim >::help

staticconstexpr

Initial value:

=
      "Changes the step size pseudo-randomly."

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

• src/Time/StepChoosers/Random.hpp