peclet::voro::mpi::VoronoiHalo< Real > Class Template Reference

#include <voronoi_halo.hpp>

Classes
struct	Gathered
	Combined owned+ghost seeds (owned first), with global ids and weights. More...

Public Types
using	Vec3 = std::array< Real, 3 >

Public Member Functions
void	init (std::array< Real, 3 > origin, std::array< Real, 3 > size, std::array< long, 3 > gsize, std::array< bool, 3 > periodic, MPI_Comm comm=MPI_COMM_WORLD)
int	rank () const
int	size () const
int	ownerOf (const Vec3 &x) const
	Rank that owns position x.
Gathered	gather (const std::vector< Vec3 > &ownedPos, const std::vector< long > &ownedGid, const std::vector< Real > &ownedWeight, double rcut)
int	numGhost () const
	Number of ghosts in the last gather() (the established topology).
void	refreshPositions (const std::vector< Vec3 > &ownedPos, std::vector< Vec3 > &out)

Member Typedef Documentation

Vec3

template<class Real >

using peclet::voro::mpi::VoronoiHalo< Real >::Vec3 = std::array<Real, 3>

Member Function Documentation

gather()

template<class Real >

Gathered peclet::voro::mpi::VoronoiHalo< Real >::gather ( const std::vector< Vec3 > &  ownedPos, const std::vector< long > &  ownedGid, const std::vector< Real > &  ownedWeight, double  rcut  )

inline

Build the owner<->ghost topology over this rank's owned seeds and gather the ghost seeds within rcut, forwarding their global ids and weights.

init()

template<class Real >

void peclet::voro::mpi::VoronoiHalo< Real >::init ( std::array< Real, 3 >  origin, std::array< Real, 3 >  size, std::array< long, 3 >  gsize, std::array< bool, 3 >  periodic, MPI_Comm  comm = MPI_COMM_WORLD  )

inline

Parameters

origin,size	physical box (origin + extent L); seeds live in [origin, origin+size).
gsize	ORB cell grid (decomposition granularity).
periodic	per-axis periodicity.

numGhost()

template<class Real >

int peclet::voro::mpi::VoronoiHalo< Real >::numGhost ( ) const

inline

Number of ghosts in the last gather() (the established topology).

ownerOf()

template<class Real >

int peclet::voro::mpi::VoronoiHalo< Real >::ownerOf ( const Vec3 &  x ) const

inline

Rank that owns position x.

rank()

template<class Real >

int peclet::voro::mpi::VoronoiHalo< Real >::rank ( ) const

inline

refreshPositions()

template<class Real >

void peclet::voro::mpi::VoronoiHalo< Real >::refreshPositions ( const std::vector< Vec3 > &  ownedPos, std::vector< Vec3 > &  out  )

inline

Position-only halo refresh: re-forward the CURRENT owned positions onto the EXISTING ghost topology (the one built by the last gather()), WITHOUT re-decomposing or re-selecting ghosts. Returns the combined owned+ghost positions in the SAME order as that gather() — so a resident per-cell topology (whose neighbour ids are combined-local indices) stays valid across the step. The periodic-native (minimal-image) tessellator recovers the right relative vectors from these raw in-[0,L) positions, so no periodic shift is applied here. This is the moving-point fast path: while no owned seed has moved beyond the Verlet skin (so no neighbour crossed the gathered shell undetected) the driver refreshes positions + repairs locally; on a skin trip it calls gather() again to re-establish the topology. out is resized to nOwned + numGhost().

size()

template<class Real >

int peclet::voro::mpi::VoronoiHalo< Real >::size ( ) const

inline

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

• include/peclet/voro/mpi/voronoi_halo.hpp