Changes the step size pseudo-randomly. Values are distributed uniformly in \(\log(dt)\). The current step is always accepted.
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| Random (double minimum, double maximum, size_t seed, const Options::Context &context={}) |
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std::pair< double, bool > | operator() (const Element< VolumeDim > &element, const TimeStepId &time_step_id, double last_step_magnitude) const |
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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. More...
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void | pup (PUP::er &p) override |
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| WRAPPED_PUPable_abstract (StepChooser) |
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virtual bool | uses_local_data () const =0 |
| 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. More...
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template<typename StepChoosersToUse = AllStepChoosers, typename DbTags > |
std::pair< double, bool > | desired_step (const double last_step_magnitude, const db::DataBox< DbTags > &box) const |
| The last_step_magnitude 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. More...
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template<typename StepChooserUse, size_t VolumeDim>
class StepChoosers::Random< StepChooserUse, VolumeDim >
Changes the step size pseudo-randomly. Values are distributed uniformly in \(\log(dt)\). The current step is always accepted.