This traversal is capable of iterating over particles stored in the Octree data structure. More...

#include <OTC18Traversal.h>

Inheritance diagram for autopas::OTC18Traversal< Particle_T, PairwiseFunctor >:

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Collaboration diagram for autopas::OTC18Traversal< Particle_T, PairwiseFunctor >:

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Public Types
using	ParticleCell = OctreeLeafNode< Particle_T >
	A shortcut to specify the type of the actual iterated cell.

Public Member Functions
	OTC18Traversal (PairwiseFunctor *pairwiseFunctor, double cutoff, double interactionLength, DataLayoutOption dataLayout, bool useNewton3)
	Constructor for the Octree traversal.

TraversalOption	getTraversalType () const override
	Return a enum representing the name of the traversal class.

bool	isApplicable () const override
	Checks if the traversal is applicable to the current state of the domain.

void	initTraversal () override
	Initializes the traversal.

void	endTraversal () override
	Finalizes the traversal.

void	traverseParticles () override
	Traverse the particles by pairs, triplets etc.

void	setSortingThreshold (size_t sortingThreshold) override
	Set the sorting-threshold for traversals that use the CellFunctor If the sum of the number of particles in two cells is greater or equal to that value, the CellFunctor creates a sorted view of the particles to avoid unnecessary distance checks.

Public Member Functions inherited from autopas::CellTraversal< OctreeLeafNode< Particle_T > >
	CellTraversal (const std::array< unsigned long, 3 > &dims)
	Constructor of CellTraversal.

virtual	~CellTraversal ()=default
	Destructor of CellTraversal.

virtual void	setCellsToTraverse (std::vector< OctreeLeafNode< Particle_T > > &cells)
	Sets the cells to iterate over.

virtual void	setSortingThreshold (size_t sortingThreshold)=0
	Set the sorting-threshold for traversals that use the CellFunctor If the sum of the number of particles in two cells is greater or equal to that value, the CellFunctor creates a sorted view of the particles to avoid unnecessary distance checks.

Public Member Functions inherited from autopas::OTTraversalInterface< OctreeNodeWrapper< Particle_T > >
	OTTraversalInterface (double interactionLength, DataLayoutOption dataLayout, bool useNewton3)
	Create a new traversal interface, which provides functionality that is required by all octree traversals.

void	setCells (std::vector< OctreeNodeWrapper< ParticleType > > *cells)
	Notify the traversal about the cells that it is able to traverse.

Public Member Functions inherited from autopas::TraversalInterface
virtual	~TraversalInterface ()=default
	Destructor of TraversalInterface.

	TraversalInterface (DataLayoutOption dataLayout, bool useNewton3)
	Constructor of the TraversalInterface.

virtual TraversalOption	getTraversalType () const =0
	Return a enum representing the name of the traversal class.

virtual bool	isApplicable () const =0
	Checks if the traversal is applicable to the current state of the domain.

virtual void	initTraversal ()=0
	Initializes the traversal.

virtual void	traverseParticles ()=0
	Traverse the particles by pairs, triplets etc.

virtual void	endTraversal ()=0
	Finalizes the traversal.

bool	getUseNewton3 () const
	Return whether the traversal uses newton 3.

DataLayoutOption	getDataLayout () const
	Return the data layout option.

Static Public Member Functions
static void	assignIDs (std::vector< OctreeLeafNode< Particle_T > * > &leaves, int startID=0)
	Assign an integer ID to every leaf.

Additional Inherited Members
Protected Member Functions inherited from autopas::OTTraversalInterface< OctreeNodeWrapper< Particle_T > >
void	loadBuffers (utils::DataLayoutConverter< PairwiseFunctor > &dataLayoutConverter, OctreeNodeWrapper< ParticleType > wrapper, std::vector< OctreeLeafNode< ParticleType > > &leaves)
	Gather all leaves and load the SoA/AoS buffers.

void	unloadBuffers (utils::DataLayoutConverter< PairwiseFunctor > &dataLayoutConverter, std::vector< OctreeLeafNode< ParticleType > * > &leaves)
	Unload the SoA/AoS buffers and clear the gathered leaves list.

OctreeNodeWrapper< ParticleType > *	getOwned ()
	Get the octree cell that contains the owned octree.

OctreeNodeWrapper< ParticleType > *	getHalo ()
	Get the octree cell that contains the halo octree.

Protected Attributes inherited from autopas::CellTraversal< OctreeLeafNode< Particle_T > >
std::array< unsigned long, 3 >	_cellsPerDimension
	The dimensions of the cellblock.

std::vector< OctreeLeafNode< Particle_T > > *	_cells
	The cells to traverse.

Protected Attributes inherited from autopas::OTTraversalInterface< OctreeNodeWrapper< Particle_T > >
std::vector< OctreeNodeWrapper< ParticleType > > *	_cells
	A list containing two cells.

std::vector< OctreeLeafNode< ParticleType > * >	_ownedLeaves
	A list of all leaves in the owned octree.

std::vector< OctreeLeafNode< ParticleType > * >	_haloLeaves
	A list of all leaves in the halo octree.

double	_interactionLength
	The interaction length is used for finding neighbors.

Protected Attributes inherited from autopas::TraversalInterface
DataLayoutOption	_dataLayout
	The datalayout used by this traversal.

bool	_useNewton3
	If this traversal makes use of newton3.

Detailed Description

template<class Particle_T, class PairwiseFunctor>
class autopas::OTC18Traversal< Particle_T, PairwiseFunctor >

This traversal is capable of iterating over particles stored in the Octree data structure.

This traversal does not use any parallelization or speed-increasing strategies and is therefore called naive.

Template Parameters

Particle_T
PairwiseFunctor

Constructor & Destructor Documentation

◆ OTC18Traversal()

template<class Particle_T , class PairwiseFunctor >

autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::OTC18Traversal	(	PairwiseFunctor *	pairwiseFunctor,
		double	cutoff,
		double	interactionLength,
		DataLayoutOption	dataLayout,
		bool	useNewton3
	)

inlineexplicit

Constructor for the Octree traversal.

Parameters

pairwiseFunctor	The functor that defines the interaction of two particles.
cutoff	cutoff (this is enough for the octree traversal, please don't use the interaction length here.)
interactionLength	The interaction length
dataLayout	The data layout with which this traversal should be initialized.
useNewton3	Parameter to specify whether the traversal makes use of newton3 or not.

Member Function Documentation

◆ assignIDs()

template<class Particle_T , class PairwiseFunctor >

static void autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::assignIDs	(	std::vector< OctreeLeafNode< Particle_T > * > &	leaves,
		int	startID = `0`
	)

inlinestatic

Assign an integer ID to every leaf.

Parameters

leaves	A list of leaves to assign the IDs to
startID	The minimum ID

◆ endTraversal()

template<class Particle_T , class PairwiseFunctor >

void autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::endTraversal ( )

inlineoverridevirtual

Finalizes the traversal.

Should be called after traverse().

Implements autopas::TraversalInterface.

◆ getTraversalType()

template<class Particle_T , class PairwiseFunctor >

TraversalOption autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::getTraversalType ( ) const

inlineoverridevirtual

Return a enum representing the name of the traversal class.

Returns: Enum representing traversal.

Implements autopas::TraversalInterface.

◆ initTraversal()

template<class Particle_T , class PairwiseFunctor >

void autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::initTraversal ( )

inlineoverridevirtual

Initializes the traversal.

Should be called before traverse().

Implements autopas::TraversalInterface.

◆ isApplicable()

template<class Particle_T , class PairwiseFunctor >

bool autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::isApplicable ( ) const

inlineoverridevirtual

Checks if the traversal is applicable to the current state of the domain.

Returns: true iff the traversal can be applied.

Implements autopas::TraversalInterface.

◆ setSortingThreshold()

template<class Particle_T , class PairwiseFunctor >

void autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::setSortingThreshold ( size_t sortingThreshold )

inlineoverridevirtual

Set the sorting-threshold for traversals that use the CellFunctor If the sum of the number of particles in two cells is greater or equal to that value, the CellFunctor creates a sorted view of the particles to avoid unnecessary distance checks.

Parameters

sortingThreshold Sum of the number of particles in two cells from which sorting should be enabled

Implements autopas::CellTraversal< OctreeLeafNode< Particle_T > >.

◆ traverseParticles()

template<class Particle_T , class PairwiseFunctor >

void autopas::OTC18Traversal< Particle_T, PairwiseFunctor >::traverseParticles ( )

inlineoverridevirtual

Traverse the particles by pairs, triplets etc.

as determined by the Functor type.

Note: This function expects a vector of exactly two cells. First cell is the main region, second is halo.

Implements autopas::TraversalInterface.

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

autopas/containers/octree/traversals/OTC18Traversal.h

Public Types

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ OTC18Traversal()

Member Function Documentation

◆ assignIDs()

◆ endTraversal()

◆ getTraversalType()

◆ initTraversal()

◆ isApplicable()

◆ setSortingThreshold()

◆ traverseParticles()