Class that defines the density functor. More...

#include <SPHCalcDensityFunctor.h>

Inheritance diagram for sphLib::SPHCalcDensityFunctor< Particle_T >:

[legend]

Collaboration diagram for sphLib::SPHCalcDensityFunctor< Particle_T >:

[legend]

Public Types
using	SoAArraysType = typename Particle_T::SoAArraysType
	soa arrays type

Public Types inherited from autopas::PairwiseFunctor< Particle_T, SPHCalcDensityFunctor< Particle_T > >
using	SoAArraysType = typename Particle_T::SoAArraysType
	Structure of the SoAs defined by the particle.

Public Types inherited from autopas::Functor< Particle_T, CRTP_T >
using	SoAArraysType = typename Particle_T::SoAArraysType
	Structure of the SoAs defined by the particle.

using	Functor_T = CRTP_T
	Make the Implementation type template publicly available.

Public Member Functions
virtual std::string	getName () override
	Returns name of functor.

bool	isRelevantForTuning () override
	Specifies whether the functor should be considered for the auto-tuning process.

bool	allowsNewton3 () override
	Specifies whether the functor is capable of Newton3-like functors.

bool	allowsNonNewton3 () override
	Specifies whether the functor is capable of non-Newton3-like functors.

void	AoSFunctor (Particle_T &i, Particle_T &j, bool newton3=true) override
	Calculates the density contribution of the interaction of particle i and j.

void	SoAFunctorSingle (autopas::SoAView< SoAArraysType > soa, bool newton3) override
	PairwiseFunctor for structure of arrays (SoA)

void	SoAFunctorPair (autopas::SoAView< SoAArraysType > soa1, autopas::SoAView< SoAArraysType > soa2, bool newton3) override
	PairwiseFunctor for structure of arrays (SoA)

void	SoAFunctorVerlet (autopas::SoAView< SoAArraysType > soa, const size_t indexFirst, const std::vector< size_t, autopas::AlignedAllocator< size_t > > &neighborList, bool newton3) override
	PairwiseFunctor for structure of arrays (SoA) for neighbor lists.

Public Member Functions inherited from autopas::PairwiseFunctor< Particle_T, SPHCalcDensityFunctor< Particle_T > >
	PairwiseFunctor (double cutoff)
	Constructor.

virtual void	AoSFunctor (Particle_T &i, Particle_T &j, bool newton3)
	PairwiseFunctor for arrays of structures (AoS).

virtual void	SoAFunctorSingle (SoAView< SoAArraysType > soa, bool newton3)
	PairwiseFunctor for structure of arrays (SoA)

virtual void	SoAFunctorVerlet (SoAView< SoAArraysType > soa, const size_t indexFirst, const std::vector< size_t, AlignedAllocator< size_t > > &neighborList, bool newton3)
	PairwiseFunctor for structure of arrays (SoA) for neighbor lists.

virtual void	SoAFunctorPair (SoAView< SoAArraysType > soa1, SoAView< SoAArraysType > soa2, bool newton3)
	PairwiseFunctor for structure of arrays (SoA)

Public Member Functions inherited from autopas::Functor< Particle_T, CRTP_T >
	Functor (double cutoff)
	Constructor.

virtual void	initTraversal ()
	This function is called at the start of each traversal.

virtual void	endTraversal (bool newton3)
	This function is called at the end of each traversal.

template<class ParticleCell >
void	SoALoader (ParticleCell &cell, SoA< SoAArraysType > &soa, size_t offset, bool skipSoAResize)
	Copies the AoS data of the given cell in the given soa.

template<typename ParticleCell >
void	SoAExtractor (ParticleCell &cell, SoA< SoAArraysType > &soa, size_t offset)
	Copies the data stored in the soa back into the cell.

virtual bool	allowsNewton3 ()=0
	Specifies whether the functor is capable of Newton3-like functors.

virtual bool	allowsNonNewton3 ()=0
	Specifies whether the functor is capable of non-Newton3-like functors.

virtual bool	isRelevantForTuning ()=0
	Specifies whether the functor should be considered for the auto-tuning process.

virtual std::string	getName ()=0
	Returns name of functor.

double	getCutoff () const
	Getter for the functor's cutoff.

virtual size_t	getNumFLOPs () const
	Get the number of FLOPs.

virtual double	getHitRate () const
	Get the hit rate.

Static Public Member Functions
static unsigned long	getNumFlopsPerKernelCall ()
	Get the number of floating point operations used in one full kernel call.

static constexpr auto	getNeededAttr ()
	Get attributes needed for computation.

static constexpr auto	getNeededAttr (std::false_type)
	Get attributes needed for computation without N3 optimization.

static constexpr auto	getComputedAttr ()
	Get attributes computed by this functor.

Static Public Member Functions inherited from autopas::Functor< Particle_T, CRTP_T >
static constexpr std::array< typename Particle_T::AttributeNames, 0 >	getNeededAttr ()
	Get attributes needed for computation.

static constexpr std::array< typename Particle_T::AttributeNames, 0 >	getNeededAttr (std::false_type)
	Get attributes needed for computation without N3 optimization.

static constexpr std::array< typename Particle_T::AttributeNames, 0 >	getComputedAttr ()
	Get attributes computed by this functor.

Detailed Description

template<class Particle_T>
class sphLib::SPHCalcDensityFunctor< Particle_T >

Class that defines the density functor.

It is used to calculate the density based on the given SPH kernel.

Template Parameters

Particle_T

Member Function Documentation

◆ allowsNewton3()

template<class Particle_T >

bool sphLib::SPHCalcDensityFunctor< Particle_T >::allowsNewton3 ( )

inlineoverridevirtual

Specifies whether the functor is capable of Newton3-like functors.

If the functor provides an interface to soa or aos functions that utilize Newton's third law of motion (actio = reactio) to reduce the computational complexity this function should return true. If this is not the case this function should return false.

Returns: true if and only if this functor provides an interface to Newton3-like functions.

Implements autopas::Functor< Particle_T, CRTP_T >.

◆ allowsNonNewton3()

template<class Particle_T >

bool sphLib::SPHCalcDensityFunctor< Particle_T >::allowsNonNewton3 ( )

inlineoverridevirtual

Specifies whether the functor is capable of non-Newton3-like functors.

If the functor provides an interface to soa or aos functions that do not utilize Newton's third law of motion (actio = reactio) this function should return true. If this is not the case this function should return false.

Returns: true if and only if this functor provides an interface to functions that do not utilize Newton3.

Implements autopas::Functor< Particle_T, CRTP_T >.

◆ AoSFunctor()

template<class Particle_T >

void sphLib::SPHCalcDensityFunctor< Particle_T >::AoSFunctor	(	Particle_T &	i,
		Particle_T &	j,
		bool	newton3 = `true`
	)

inlineoverridevirtual

Calculates the density contribution of the interaction of particle i and j.

It is not symmetric, because the smoothing lenghts of the two particles can be different.

Parameters

i	first particle of the interaction
j	second particle of the interaction
newton3	defines whether or whether not to use newton 3

Reimplemented from autopas::PairwiseFunctor< Particle_T, SPHCalcDensityFunctor< Particle_T > >.

◆ getComputedAttr()

template<class Particle_T >

static constexpr auto sphLib::SPHCalcDensityFunctor< Particle_T >::getComputedAttr ( )

inlinestaticconstexpr

Get attributes computed by this functor.

Returns: Attributes computed by this functor.

Todo:: C++20: make this function virtual

◆ getName()

template<class Particle_T >

virtual std::string sphLib::SPHCalcDensityFunctor< Particle_T >::getName ( )

inlineoverridevirtual

Returns name of functor.

Intended for use with the iteration logger, to differentiate between calls to computeInteractions using different functors in the logs.

Returns: name of functor.

Implements autopas::Functor< Particle_T, CRTP_T >.

◆ getNeededAttr() [1/2]

template<class Particle_T >

static constexpr auto sphLib::SPHCalcDensityFunctor< Particle_T >::getNeededAttr ( )

inlinestaticconstexpr

Get attributes needed for computation.

Returns: Attributes needed for computation.

Todo:: C++20: make this function virtual

◆ getNeededAttr() [2/2]

template<class Particle_T >

static constexpr auto sphLib::SPHCalcDensityFunctor< Particle_T >::getNeededAttr ( std::false_type )

inlinestaticconstexpr

Get attributes needed for computation without N3 optimization.

Returns: Attributes needed for computation.

Todo:: C++20: make this function virtual

◆ getNumFlopsPerKernelCall()

template<class Particle_T >

static unsigned long sphLib::SPHCalcDensityFunctor< Particle_T >::getNumFlopsPerKernelCall ( )

inlinestatic

Get the number of floating point operations used in one full kernel call.

Returns: the number of floating point operations

◆ isRelevantForTuning()

template<class Particle_T >

bool sphLib::SPHCalcDensityFunctor< Particle_T >::isRelevantForTuning ( )

inlineoverridevirtual

Specifies whether the functor should be considered for the auto-tuning process.

Returns: true if and only if this functor is relevant for auto-tuning.

Implements autopas::Functor< Particle_T, CRTP_T >.

◆ SoAFunctorPair()

template<class Particle_T >

void sphLib::SPHCalcDensityFunctor< Particle_T >::SoAFunctorPair	(	autopas::SoAView< SoAArraysType >	soa1,
		autopas::SoAView< SoAArraysType >	soa2,
		bool	newton3
	)

inlineoverridevirtual

PairwiseFunctor for structure of arrays (SoA)

This functor should calculate the forces or any other pair-wise interaction between all particles of soa1 and soa2. This should include a cutoff check if needed!

Parameters

soa1	First structure of arrays.
soa2	Second structure of arrays.
newton3	defines whether or whether not to use newton 3

Reimplemented from autopas::PairwiseFunctor< Particle_T, SPHCalcDensityFunctor< Particle_T > >.

◆ SoAFunctorSingle()

template<class Particle_T >

void sphLib::SPHCalcDensityFunctor< Particle_T >::SoAFunctorSingle	(	autopas::SoAView< SoAArraysType >	soa,
		bool	newton3
	)

inlineoverridevirtual

PairwiseFunctor for structure of arrays (SoA)

This functor should calculate the forces or any other pair-wise interaction between all particles in an soa. This should include a cutoff check if needed!

Parameters

soa	Structure of arrays
newton3	defines whether or whether not to use newton 3 This functor ignores the newton3 value, as we do not expect any benefit from disabling newton3.

Reimplemented from autopas::PairwiseFunctor< Particle_T, SPHCalcDensityFunctor< Particle_T > >.

◆ SoAFunctorVerlet()

template<class Particle_T >

void sphLib::SPHCalcDensityFunctor< Particle_T >::SoAFunctorVerlet	(	autopas::SoAView< SoAArraysType >	soa,
		const size_t	indexFirst,
		const std::vector< size_t, autopas::AlignedAllocator< size_t > > &	neighborList,
		bool	newton3
	)

inlineoverridevirtual

PairwiseFunctor for structure of arrays (SoA) for neighbor lists.

This functor should calculate the forces or any other pair-wise interaction between the particle in the SoA with index indexFirst and all particles with indices in the neighborList. This should include a cutoff check if needed!

Parameters

soa	Structure of arrays
indexFirst	The index of the first particle for each interaction
neighborList	The list of neighbors
newton3	defines whether or whether not to use newton 3

Reimplemented from autopas::PairwiseFunctor< Particle_T, SPHCalcDensityFunctor< Particle_T > >.

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

/github/workspace/applicationLibrary/sph/SPHLibrary/SPHCalcDensityFunctor.h

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ allowsNewton3()

◆ allowsNonNewton3()

◆ AoSFunctor()

◆ getComputedAttr()

◆ getName()

◆ getNeededAttr() [1/2]

◆ getNeededAttr() [2/2]

◆ getNumFlopsPerKernelCall()

◆ isRelevantForTuning()

◆ SoAFunctorPair()

◆ SoAFunctorSingle()

◆ SoAFunctorVerlet()