DIY: diy::RegularDecomposer< Bounds_ > Struct Template Reference

Decomposes a regular (discrete or continuous) domain into even blocks; creates Links with Bounds along the way. More...

Public Types
typedef Bounds_	Bounds

typedef BoundsValue< Bounds >::type	Coordinate

typedef RegularLinkSelector < Bounds >::type	Link

using	Creator = std::function< void(int, Bounds, Bounds, Bounds, Link)>

using	Updater = std::function< void(int, int, Bounds, Bounds, Bounds, Link)>

typedef std::vector< bool >	BoolVector

typedef std::vector< Coordinate >	CoordinateVector

typedef std::vector< int >	DivisionsVector

Public Member Functions
	RegularDecomposer (int dim_, const Bounds &domain_, int nblocks_, BoolVector share_face_=BoolVector(), BoolVector wrap_=BoolVector(), CoordinateVector ghosts_=CoordinateVector(), DivisionsVector divisions_=DivisionsVector())

void	decompose (int rank, const Assigner &assigner, const Creator &create)

void	decompose (int rank, const Assigner &assigner, Master &master, const Updater &update)

void	decompose (int rank, const Assigner &assigner, Master &master)

template<class Point >
int	lowest_gid (const Point &p) const

void	gid_to_coords (int gid, DivisionsVector &coords) const

int	coords_to_gid (const DivisionsVector &coords) const

void	fill_divisions (std::vector< int > &divisions) const

void	fill_bounds (Bounds &bounds, const DivisionsVector &coords, bool add_ghosts=false) const
	Gets the bounds, with or without ghosts, for a block specified by its block coordinates. More...

void	fill_bounds (Bounds &bounds, int gid, bool add_ghosts=false) const
	Gets the bounds, with or without ghosts, for a block specified by its gid. More...

template<class Point >
void	point_to_gids (std::vector< int > &gids, const Point &p) const

template<class Point >
int	point_to_gid (const Point &p) const
	returns gid of a block that contains the point; ignores ghosts

template<class Point >
int	num_gids (const Point &p) const

template<class Point >
void	top_bottom (int &top, int &bottom, const Point &p, int axis) const

Static Public Member Functions
static bool	all (const std::vector< int > &v, int x)

static void	gid_to_coords (int gid, DivisionsVector &coords, const DivisionsVector &divisions)

static int	coords_to_gid (const DivisionsVector &coords, const DivisionsVector &divisions)

static void	factor (std::vector< unsigned > &factors, int n)

Detailed Description

Decomposes a regular (discrete or continuous) domain into even blocks; creates Links with Bounds along the way.

Examples:: decomposition/regular-decomposer-long.cpp, decomposition/regular-decomposer-short.cpp, reduce/all-to-all.cpp, reduce/merge-reduce.cpp, reduce/sort.cpp, and reduce/swap-reduce.cpp.

template<class Bounds_>

diy::RegularDecomposer< Bounds_ >::RegularDecomposer	(	int	dim_,
		const Bounds &	domain_,
		int	nblocks_,
		BoolVector	share_face_ = `BoolVector()`,
		BoolVector	wrap_ = `BoolVector()`,
		CoordinateVector	ghosts_ = `CoordinateVector()`,
		DivisionsVector	divisions_ = `DivisionsVector()`
	)

inline

Parameters

dim	dimensionality of the decomposition
domain	bounds of global domain
nblocks	total number of global blocks
share_face	indicates dimensions on which to share block faces
wrap	indicates dimensions on which to wrap the boundary
ghosts	indicates how many ghosts to use in each dimension
divisions	indicates how many cuts to make along each dimension (0 means "no constraint," i.e., leave it up to the algorithm)

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