Peano

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Represent one type (species) of particles. More...

#include <ParticleSpecies.h>

Collaboration diagram for swift2::ParticleSpecies:

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Public Member Functions
	ParticleSpecies ()
	Initialise all data with the data corresponding to a clear, i.e.

	ParticleSpecies (const ParticleSpecies &copy)=delete

double	getMinTimeStepSize () const

double	getMaxTimeStepSize () const

double	getMinTimeStamp () const

double	getMaxTimeStamp () const

double	getMinSearchRadius () const

double	getMaxSearchRadius () const

double	getMinVelocity () const

double	getMaxVelocity () const

bool	rerunPreviousGridSweep () const
	Query species whether the last grid sweep/update sweep has to be repeated.

void	clearRerunPreviousGridSweepFlag ()
	Set the rerun flag back to false.

void	setRerunPreviousGridSweep ()
	Tell Peano to run through mesh with same action sets again.

void	setTimeStamp (double t, bool reduceInsteadOfOverwrite=true)
	Set both min and max time stamp.

void	setTimeStamp (double tMin, double tMax, bool reduceInsteadOfOverwrite=true)

void	setTimeStepSize (double dt, bool reduceInsteadOfOverwrite=true)

void	setTimeStepSize (double dtMin, double dtMax, bool reduceInsteadOfOverwrite=true)

void	setVelocity (double vMin, double vMax, double rMin, double rMax)
	Set the maximum velocity that has been observed in a cell.

void	startTimeStep ()
	This routine is automatically called for each and every species by the GlobalState object.

void	finishTimeStep ()
	This routine is automatically called for each and every species by the GlobalState object.

void	clearSearchRadius ()

void	clearVelocity ()

void	clearTimeStampAndTimeStepSize ()
	Clear all the time step sizes and time stamps.

void	allReduce ()

Private Attributes
double	_minTimeStepSize

double	_maxTimeStepSize

double	_minTimeStamp

double	_maxTimeStamp

double	_minSearchRadius

double	_maxSearchRadius

double	_minVelocity

double	_maxVelocity

bool	_rerunPreviousGridSweep

Static Private Attributes
static tarch::logging::Log	_log

static tarch::multicore::BooleanSemaphore	_semaphore

Detailed Description

Represent one type (species) of particles.

Every particle type (class) has a static species, i.e. some data tied to the class rather than each individual object. These species data hold information such as global statistics.

Thread-safety

The class is completely thread-safe.

Definition at line 33 of file ParticleSpecies.h.

Constructor & Destructor Documentation

◆ ParticleSpecies() [1/2]

swift2::ParticleSpecies::ParticleSpecies ( )

Initialise all data with the data corresponding to a clear, i.e.

from where they can be properly reduced. The only exception is the time stamp. Both the maximum and minimum time step are set to zero. If we set the max time stamp to inf, the code would immediately terminate, as it thinks at least one particle has reached the final time stamp.

Definition at line 61 of file ParticleSpecies.h.

◆ ParticleSpecies() [2/2]

swift2::ParticleSpecies::ParticleSpecies ( const ParticleSpecies & copy )

delete

Member Function Documentation

◆ allReduce()

void swift2::ParticleSpecies::allReduce ( )

Definition at line 234 of file ParticleSpecies.h.

References _maxSearchRadius, _maxTimeStamp, _maxTimeStepSize, _maxVelocity, _minSearchRadius, _minTimeStamp, _minTimeStepSize, _minVelocity, _rerunPreviousGridSweep, tarch::mpi::Rank::allReduce(), tarch::mpi::Rank::getInstance(), tarch::services::ServiceRepository::getInstance(), and tarch::services::ServiceRepository::receiveDanglingMessages().

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◆ clearRerunPreviousGridSweepFlag()

void swift2::ParticleSpecies::clearRerunPreviousGridSweepFlag ( )

Set the rerun flag back to false.

This operation has to be called explicitly in your code, i.e. we do not invoke it automatically. A canonical location to call it is the prepare_traversal_kernel event of the corresponding AlgorithmStep of your species.

Definition at line 119 of file ParticleSpecies.h.

References _rerunPreviousGridSweep.

◆ clearSearchRadius()

void swift2::ParticleSpecies::clearSearchRadius ( )

Definition at line 205 of file ParticleSpecies.h.

References _maxSearchRadius, and _minSearchRadius.

◆ clearTimeStampAndTimeStepSize()

void swift2::ParticleSpecies::clearTimeStampAndTimeStepSize ( )

Clear all the time step sizes and time stamps.

These values then can be reduced again through

setTimeStepSize()
setTimeStamp()

before they are actually queried through getMinTimeStepSize() and related routines.

Definition at line 226 of file ParticleSpecies.h.

References _maxTimeStamp, _maxTimeStepSize, _minTimeStamp, and _minTimeStepSize.

◆ clearVelocity()

void swift2::ParticleSpecies::clearVelocity ( )

Definition at line 210 of file ParticleSpecies.h.

References _maxVelocity, and _minVelocity.

◆ finishTimeStep()

void swift2::ParticleSpecies::finishTimeStep ( )

This routine is automatically called for each and every species by the GlobalState object.

Definition at line 203 of file ParticleSpecies.h.

◆ getMaxSearchRadius()

double swift2::ParticleSpecies::getMaxSearchRadius ( ) const

Definition at line 93 of file ParticleSpecies.h.

References _maxSearchRadius.

◆ getMaxTimeStamp()

double swift2::ParticleSpecies::getMaxTimeStamp ( ) const

Definition at line 85 of file ParticleSpecies.h.

References _maxTimeStamp.

◆ getMaxTimeStepSize()

double swift2::ParticleSpecies::getMaxTimeStepSize ( ) const

Definition at line 77 of file ParticleSpecies.h.

References _maxTimeStepSize.

◆ getMaxVelocity()

double swift2::ParticleSpecies::getMaxVelocity ( ) const

Definition at line 101 of file ParticleSpecies.h.

References _maxVelocity.

◆ getMinSearchRadius()

double swift2::ParticleSpecies::getMinSearchRadius ( ) const

Definition at line 89 of file ParticleSpecies.h.

References _minSearchRadius.

◆ getMinTimeStamp()

double swift2::ParticleSpecies::getMinTimeStamp ( ) const

Definition at line 81 of file ParticleSpecies.h.

References _minTimeStamp.

◆ getMinTimeStepSize()

double swift2::ParticleSpecies::getMinTimeStepSize ( ) const

Definition at line 73 of file ParticleSpecies.h.

References _minTimeStepSize.

◆ getMinVelocity()

double swift2::ParticleSpecies::getMinVelocity ( ) const

Definition at line 97 of file ParticleSpecies.h.

References _minVelocity.

◆ rerunPreviousGridSweep()

bool swift2::ParticleSpecies::rerunPreviousGridSweep ( ) const

Query species whether the last grid sweep/update sweep has to be repeated.

This happens if the search radius changes for example.

Definition at line 109 of file ParticleSpecies.h.

References _rerunPreviousGridSweep.

◆ setRerunPreviousGridSweep()

void swift2::ParticleSpecies::setRerunPreviousGridSweep ( )

Tell Peano to run through mesh with same action sets again.

This flag tells Swift's main function that the step has not been complete, i.e. it has to rerun the same step again once this mesh traversal has completed. Therefore, the name is setRerunPreviousGridSweep() - by the time this information is evaluated it will be after the mesh sweep.

The flag is not automatically reset at any point. You have to do this manually by calling clearRerunPreviousGridSweepFlag(). Consult the documentation there.

The flag is automatically reduced by allReduce(), i.e. after the mesh traversal, all ranks will know if one rank has requested a rerun for the species.

Definition at line 138 of file ParticleSpecies.h.

References _rerunPreviousGridSweep, and _semaphore.