mdp_lattice Class Reference

distributed lattice object More...

#include <mdp_lattice.h>

Public Member Functions
mdp_int	global_coordinate (int *x)
void	global_coordinate (mdp_int global_idx, int *x)
int	compute_parity (int *x)
	mdp_lattice ()
	mdp_lattice (int ndim_, int nx_[], int(where_)(int , int, int )=default_partitioning0, void(neighbour_)(int, int , int , int , int, int )=torus_topology, mdp_int random_seed_=0, int next_next_=1, bool local_random_=true)
	mdp_lattice (int ndim_, int ndir_, int nx_[], int(where_)(int , int, int )=default_partitioning0, void(neighbour_)(int, int , int , int , int, int )=torus_topology, mdp_int random_seed_=0, int next_next_=1, bool local_random_=true)
	for weird stuff
void	allocate_lattice (int ndim_, int nx_[], int(where_)(int , int, int )=default_partitioning0, void(neighbour_)(int, int , int , int , int, int )=torus_topology, mdp_int random_seed_=0, int next_next_=1, bool local_random_=true)
void	allocate_lattice (int ndim_, int ndir_, int nx_[], int(where_)(int , int, int )=default_partitioning0, void(neighbour_)(int, int , int , int , int, int )=torus_topology, mdp_int random_seed_=0, int next_next_=1, bool local_random_=true)
	for weird stuff
virtual	~mdp_lattice ()
void	deallocate_memory ()
	dynamically deallocate a lattice
void	initialize_random (mdp_int random_seed_=0)
mdp_prng &	random (mdp_site)
	Returns the local object mdp_prng at site x of the lattice.
int	n_dimensions () const
	number of dimensions of the lattice (deprecated_
int	n_directions () const
	number of directions one can move on the lattice; usually same as ndim
mdp_int	size () const
	number of sites of the lattice
mdp_int	size (const int mu) const
	size of the lattice in direction mu
mdp_int	local_volume () const
	number of lattice sites stored locally by current process
mdp_int	global_volume () const
	total lattice volume (deprecated)
mdp_int	move_up (const mdp_int idx, const int mu) const
mdp_int	move_down (const mdp_int idx, const int mu) const
mdp_int	local (mdp_int idx) const
mdp_int	global (mdp_int idx) const
int	site_parity (const mdp_int idx) const
mdp_int	start_index (const int process, int p=EVENODD) const
mdp_int	stop_index (const int process, int p=EVENODD) const
Public Attributes
int	ndim
int	ndir
int	next_next
int *	nx
mdp_int	nvol
mdp_int	nvol_gl
mdp_int	nvol_in
mdp_int *	gl
mdp_int *	lg
FILE *	lg_file
mdp_int **	up
mdp_int **	dw
int **	co
int *	wh
int *	parity
mdp_int	start [_NprocMax_][2]
mdp_int	stop [_NprocMax_][2]
mdp_int	len_to_send [_NprocMax_][2]
mdp_int *	to_send [_NprocMax_]
bool	local_random_generator
int(*	where )(int , int, int )
void(*	neighbour )(int, int , int , int , int, int )

Detailed Description

distributed lattice object

Example:

///    int box[]={3,3,3};
///    int seed=0, border_width=1;
///    mdp_lattice lattice(3,box,default_partitioning0,
///                        torus_topology,seed,border_width);
///    mdp_site x(lattice);
///    forallsites(x)
///      cout << lattice.random(x).plain() << endl;
///

Constructor & Destructor Documentation

mdp_lattice::mdp_lattice ( ) [inline]

mdp_lattice::mdp_lattice	(	int	ndim_,
		int	nx_[],
		int()(int , int, int *)	where_ = `default_partitioning0`,
		void()(int, int , int , int , int, int *)	neighbour_ = `torus_topology`,
		mdp_int	random_seed_ = `0`,
		int	next_next_ = `1`,
		bool	local_random_ = `true`
	)			`[inline]`

declares a lattice object

Parameters:

	ndim_	dimensions of the lattice
	nx_	size of the lattice
	where	pointer to a partitioning function neighbour_ pointer to a topology function.
	random_seed_	seed to be used by the parallel prng
	next_next_	size of the buffer between neighbour processes
	local_random_	true is local random generator is required

mdp_lattice::mdp_lattice	(	int	ndim_,
		int	ndir_,
		int	nx_[],
		int()(int , int, int *)	where_ = `default_partitioning0`,
		void()(int, int , int , int , int, int *)	neighbour_ = `torus_topology`,
		mdp_int	random_seed_ = `0`,
		int	next_next_ = `1`,
		bool	local_random_ = `true`
	)			`[inline]`

for weird stuff

virtual mdp_lattice::~mdp_lattice ( ) [inline, virtual]

Member Function Documentation

void mdp_lattice::allocate_lattice	(	int	ndim_,
		int	ndir_,
		int	nx_[],
		int()(int , int, int *)	where_ = `default_partitioning0`,
		void()(int, int , int , int , int, int *)	neighbour_ = `torus_topology`,
		mdp_int	random_seed_ = `0`,
		int	next_next_ = `1`,
		bool	local_random_ = `true`
	)			`[inline]`

for weird stuff

void mdp_lattice::allocate_lattice	(	int	ndim_,
		int	nx_[],
		int()(int , int, int *)	where_ = `default_partitioning0`,
		void()(int, int , int , int , int, int *)	neighbour_ = `torus_topology`,
		mdp_int	random_seed_ = `0`,
		int	next_next_ = `1`,
		bool	local_random_ = `true`
	)			`[inline]`

reallocate a lattice dynamically

Parameters:

	ndim_	dimensions of the lattice
	nx_	size of the lattice
	where	pointer to a partitioning function neighbour_ pointer to a topology function.
	random_seed_	seed to be used by the parallel prng
	next_next_	size of the buffer between neighbour processes
	local_random_	true is local random generator is required