Trigger a slab size change. More...

#include <Event.hpp>

Classes
struct	DelayChange

struct	StepChoosers

Public Types
using	options = implementation defined

using	compute_tags_for_observation_box = implementation defined

using	return_tags = implementation defined

using	argument_tags = implementation defined

using	is_ready_argument_tags = implementation defined

Public Member Functions
	ChangeSlabSize (std::vector< std::unique_ptr< StepChooser< StepChooserUse::Slab > > > step_choosers, const uint64_t delay_change, const Options::Context &context)

template<typename DbTags , typename Metavariables , typename ArrayIndex , typename ParallelComponent >
void	operator() (const gsl::not_null< db::DataBox< DbTags > * > box, const TimeStepId &time_step_id, Parallel::GlobalCache< Metavariables > &cache, const ArrayIndex &array_index, const ParallelComponent *const, const ObservationValue &) const

template<typename Metavariables , typename ArrayIndex , typename Component >
bool	is_ready (Parallel::GlobalCache< Metavariables > &, const ArrayIndex &, const Component *const) const

bool	needs_evolved_variables () const override
	Whether the event uses anything depending on the evolved_variables. If this returns false, anything depending on the evolved variables may have an incorrect value when the event is run. More...

template<typename F >
void	for_each_step_chooser (F &&f) const

void	pup (PUP::er &p) override

Public Member Functions inherited from Event
	Event (CkMigrateMessage *msg)

	WRAPPED_PUPable_abstract (Event)

template<typename ComputeTagsList , typename DataBoxType , typename Metavariables , typename ArrayIndex , typename ComponentPointer >
void	run (const gsl::not_null< ObservationBox< ComputeTagsList, DataBoxType > * > box, Parallel::GlobalCache< Metavariables > &cache, const ArrayIndex &array_index, const ComponentPointer, const ObservationValue &observation_value) const

template<typename DbTags , typename Metavariables , typename ArrayIndex , typename ComponentPointer >
bool	is_ready (const db::DataBox< DbTags > &box, Parallel::GlobalCache< Metavariables > &cache, const ArrayIndex &array_index, const ComponentPointer) const

virtual bool	needs_evolved_variables () const =0
	Whether the event uses anything depending on the evolved_variables. If this returns false, anything depending on the evolved variables may have an incorrect value when the event is run. More...

Static Public Attributes
static constexpr Options::String	help

Detailed Description

Trigger a slab size change.

The new size will be the minimum suggested by any of the provided step choosers on any element. This requires a global reduction, so it is possible to delay the change until a later slab to avoid a global synchronization. The actual change is carried out by Actions::ChangeSlabSize.

When running with global time-stepping, the slab size and step size are the same, so this adjusts the step size used by the time integration. With local time-stepping this controls the interval between times when the sequences of steps on all elements are forced to align.

Member Function Documentation

◆ needs_evolved_variables()

bool Events::ChangeSlabSize::needs_evolved_variables ( ) const

inlineoverridevirtual

Whether the event uses anything depending on the evolved_variables. If this returns false, anything depending on the evolved variables may have an incorrect value when the event is run.

Implements Event.

Member Data Documentation

◆ help

constexpr Options::String Events::ChangeSlabSize::help

staticconstexpr

Initial value:

=
      "Trigger a slab size change chosen by the provided step choosers.\n"
      "The actual changing of the slab size can be delayed until a later\n"
      "slab to improve parallelization."

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

src/Time/ChangeSlabSize/Event.hpp

Classes

Public Types

Public Member Functions

Static Public Attributes

Detailed Description

Member Function Documentation

◆ needs_evolved_variables()

Member Data Documentation

◆ help