cs_halo.c File Reference

#include "cs_defs.h"
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "bft_mem.h"
#include "bft_error.h"
#include "bft_printf.h"
#include "cs_base.h"
#include "cs_order.h"
#include "cs_interface.h"
#include "cs_rank_neighbors.h"
#include "fvm_periodicity.h"
#include "cs_halo.h"

Include dependency graph for cs_halo.c:

Functions
cs_halo_t *	cs_halo_create (const cs_interface_set_t *ifs)
	Create a halo structure given an interface set. More...
cs_halo_t *	cs_halo_create_from_ref (const cs_halo_t *ref)
	Create a halo structure, given a reference halo. More...
cs_halo_t *	cs_halo_create_from_rank_neighbors (const cs_rank_neighbors_t *rn, cs_lnum_t n_local_elts, cs_lnum_t n_distant_elts, const int elt_rank_id[], const cs_lnum_t elt_id[])
	Create a halo structure from distant element distant ranks and ids. More...
void	cs_halo_destroy (cs_halo_t **halo)
void	cs_halo_update_buffers (const cs_halo_t *halo)
void	cs_halo_free_buffer (void)
void	cs_halo_renumber_cells (cs_halo_t *halo, const cs_lnum_t new_cell_id[])
void	cs_halo_renumber_ghost_cells (cs_halo_t *halo, const cs_lnum_t old_cell_id[])
void	cs_halo_sync_untyped (const cs_halo_t *halo, cs_halo_type_t sync_mode, size_t size, void *val)
void	cs_halo_sync_num (const cs_halo_t *halo, cs_halo_type_t sync_mode, cs_lnum_t num[])
void	cs_halo_sync_var (const cs_halo_t *halo, cs_halo_type_t sync_mode, cs_real_t var[])
void	cs_halo_sync_var_strided (const cs_halo_t *halo, cs_halo_type_t sync_mode, cs_real_t var[], int stride)
void	cs_halo_sync_component (const cs_halo_t *halo, cs_halo_type_t sync_mode, cs_halo_rotation_t rotation_op, cs_real_t var[])
void	cs_halo_sync_components_strided (const cs_halo_t *halo, cs_halo_type_t sync_mode, cs_halo_rotation_t rotation_op, cs_real_t var[], int stride)
bool	cs_halo_get_use_barrier (void)
void	cs_halo_set_use_barrier (bool use_barrier)
void	cs_halo_dump (const cs_halo_t *halo, int print_level)

Function Documentation

cs_halo_create()

cs_halo_t* cs_halo_create

(

const cs_interface_set_t *

ifs

)

Create a halo structure given an interface set.

Parameters

[in]

ifs

pointer to a cs_interface_set structure

Returns

pointer to created cs_halo_t structure

cs_halo_create_from_rank_neighbors()

cs_halo_t* cs_halo_create_from_rank_neighbors	(	const cs_rank_neighbors_t *	rn,
		cs_lnum_t	n_local_elts,
		cs_lnum_t	n_distant_elts,
		const int	elt_rank_id[],
		const cs_lnum_t	elt_id[]
	)

Create a halo structure from distant element distant ranks and ids.

Remarks

This function does not handle periodicity. For most matrix-vector, products and similar operations, periodicity of translation an even rotation could be handled with no specific halo information, simply by assigning an equivalence between two periodic elements. For rotation, this would require also applying a rotation through the matrix coefficients (this would have the advantage of being compatible with external libraries). An alternative would be to add rotation information to a given halo as a second stage, through a specialized operator which can be added in the future.

Parameters

[in]	rn	associated rank neighbors info
[in]	n_local_elts	number of elements for local rank
[in]	n_distant_elts	number of distant elements for local rank
[in]	elt_rank_id	distant element rank index in rank neighbors, ordered by rank (size: n_distant_elts)
[in]	elt_id	distant element id (at distant rank), ordered by rank (size: n_distant_elts)

Returns

pointer to created cs_halo_t structure

cs_halo_create_from_ref()

cs_halo_t* cs_halo_create_from_ref

(

const cs_halo_t *

ref

)

Create a halo structure, given a reference halo.

Parameters

[in]

ref

pointer to reference halo

Returns

pointer to created cs_halo_t structure

cs_halo_destroy()

void cs_halo_destroy

(

cs_halo_t **

halo

)

brief Destroy a halo structure.

Parameters

[in,out]

halo

pointer to pointer to cs_halo structure to destroy.

cs_halo_dump()

void cs_halo_dump	(	const cs_halo_t *	halo,
		int	print_level
	)

cs_halo_free_buffer()

void cs_halo_free_buffer

(

void

)

cs_halo_get_use_barrier()

bool cs_halo_get_use_barrier

(

void

)

cs_halo_renumber_cells()

void cs_halo_renumber_cells	(	cs_halo_t *	halo,
		const cs_lnum_t	new_cell_id[]
	)

cs_halo_renumber_ghost_cells()

void cs_halo_renumber_ghost_cells	(	cs_halo_t *	halo,
		const cs_lnum_t	old_cell_id[]
	)

cs_halo_set_use_barrier()

void cs_halo_set_use_barrier

(

bool

use_barrier

)

cs_halo_sync_component()

void cs_halo_sync_component	(	const cs_halo_t *	halo,
		cs_halo_type_t	sync_mode,
		cs_halo_rotation_t	rotation_op,
		cs_real_t	var[]
	)

cs_halo_sync_components_strided()

void cs_halo_sync_components_strided	(	const cs_halo_t *	halo,
		cs_halo_type_t	sync_mode,
		cs_halo_rotation_t	rotation_op,
		cs_real_t	var[],
		int	stride
	)

cs_halo_sync_num()

void cs_halo_sync_num	(	const cs_halo_t *	halo,
		cs_halo_type_t	sync_mode,
		cs_lnum_t	num[]
	)

cs_halo_sync_untyped()

void cs_halo_sync_untyped	(	const cs_halo_t *	halo,
		cs_halo_type_t	sync_mode,
		size_t	size,
		void *	val
	)

cs_halo_sync_var()

void cs_halo_sync_var	(	const cs_halo_t *	halo,
		cs_halo_type_t	sync_mode,
		cs_real_t	var[]
	)

cs_halo_sync_var_strided()

void cs_halo_sync_var_strided	(	const cs_halo_t *	halo,
		cs_halo_type_t	sync_mode,
		cs_real_t	var[],
		int	stride
	)

cs_halo_update_buffers()

void cs_halo_update_buffers

(

const cs_halo_t *

halo

)