read_exodus_grid.c File Reference

#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include "read_exodus_grid.h"
#include "utils_common.h"
#include "io_utils.h"
#include "geometry.h"
#include "read_grid.h"
#include "yac_mpi_internal.h"
#include <netcdf.h>

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Data Structures
struct	temp_edge

Functions
static size_t *	generate_offsets (size_t N, int *counts)
static int	partition_idx_from_element_idx (size_t element_idx, size_t num_elements, int num_partitions)
void	yac_read_exodus_grid_information_parallel (const char *filename, MPI_Comm comm, yac_coordinate_pointer *node_coords, yac_int **elem_ids, yac_int **node_ids, size_t *num_elem, size_t *num_nodes, int **num_nodes_per_elem, int **num_elem_per_node, size_t **elem_to_node, size_t **node_to_elem)
static int	compare_temp_edges (void const *a, void const *b)
static int	check_pole (double *vertex)
static int	check_lon_edge (double *vertex_a_, double *vertex_b_)
static int	check_lat_edge (double *vertex_a, double *vertex_b)
struct yac_basic_grid_data	yac_read_exodus_basic_grid_data_parallel (const char *filename, int use_ll_edges, MPI_Comm comm)
struct yac_basic_grid *	yac_read_exodus_basic_grid_parallel (char const *filename, char const *gridname, int use_ll_edges, MPI_Comm comm)

Function Documentation

check_lat_edge()

static int check_lat_edge ( double * vertex_a, double * vertex_b )

static

Definition at line 415 of file read_exodus_grid.c.

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check_lon_edge()

static int check_lon_edge ( double * vertex_a_, double * vertex_b_ )

static

Definition at line 404 of file read_exodus_grid.c.

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check_pole()

static int check_pole ( double * vertex )

static

Definition at line 399 of file read_exodus_grid.c.

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compare_temp_edges()

static int compare_temp_edges ( void const * a, void const * b )

static

Definition at line 388 of file read_exodus_grid.c.

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generate_offsets()

static size_t * generate_offsets ( size_t N, int * counts )

static

Definition at line 25 of file read_exodus_grid.c.

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partition_idx_from_element_idx()

static int partition_idx_from_element_idx ( size_t element_idx, size_t num_elements, int num_partitions )

inlinestatic

Definition at line 38 of file read_exodus_grid.c.

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yac_read_exodus_basic_grid_data_parallel()

struct yac_basic_grid_data yac_read_exodus_basic_grid_data_parallel	(	const char *	filename,
		int	use_ll_edges,
		MPI_Comm	comm )

Reads in an EXODUS-formated grid netcdf file in parallel and returns a yac_basic_grid_data built from it.

Parameters

[in]	filename	name of the EXODUS-formated grid netcdf file
[in]	use_ll_edges	if != 0, assume that all edges of the grid follow circles of either constant longitude or constant latitude and set edge types accordingly. Otherwise it is assumed that all edges follow great circles.
[in]	comm	MPI communicator containing all proceses that will get a part of the grid

Returns

yac_basic_grid_data structure containing part of the grid.

See also

Configuration of parallel IO in YAC

Definition at line 420 of file read_exodus_grid.c.

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yac_read_exodus_basic_grid_parallel()

struct yac_basic_grid * yac_read_exodus_basic_grid_parallel	(	char const *	filename,
		char const *	gridname,
		int	use_ll_edges,
		MPI_Comm	comm )

Reads in an EXODUS-formated grid netcdf file in parallel and returns a yac_basic_grid built from it.

Parameters

[in]	filename	name of the EXODUS-formated grid netcdf file
[in]	gridname	name of grid
[in]	use_ll_edges	if != 0, assume that all edges of the grid follow circles of either constant longitude or constant latitude and set edge types accordingly. Otherwise it is assumed that all edges follow great circles.
[in]	comm	MPI communicator containing all proceses that will get a part of the grid

Returns

yac_basic_grid structure containing part of the grid.

Remarks

The data of each process contains no halo cells.

See also

Configuration of parallel IO in YAC

Definition at line 547 of file read_exodus_grid.c.

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yac_read_exodus_grid_information_parallel()

void yac_read_exodus_grid_information_parallel	(	const char *	filename,
		MPI_Comm	comm,
		yac_coordinate_pointer *	node_coords,
		yac_int **	elem_ids,
		yac_int **	node_ids,
		size_t *	num_elem,
		size_t *	num_nodes,
		int **	num_nodes_per_elem,
		int **	num_elem_per_node,
		size_t **	elem_to_node,
		size_t **	node_to_elem )

Reads in an EXODUS-formated grid netcdf file and returns the grid information in a format that allows the user to set up a yac_basic_grid_data structure. The reading is done in parallel and a basic domain decomposition is applied.

Parameters

[in]	filename	name of the EXODUS-formated grid netcdf file
[in]	comm	MPI communicator containing all proceses that will get a part of the grid
[out]	node_coords	Cartesian coordinates of all nodes/vertices
[out]	elem_ids	global ids of local elements/cells
[out]	node_ids	global ids of local nodes/vertices
[out]	num_elem	number of elements/cells in the local part of the grid
[out]	num_nodes	number of nodes/vertices in the local part of the the grid
[out]	num_nodes_per_elem	number of nodes/vertices per element/cell
[out]	num_elem_per_node	number of elements/cells per node/vertex
[out]	elem_to_node	local node/vertex indices for each local element/cell
[out]	node_to_elem	local element/cell indices for each local node/vertex

See also

Configuration of parallel IO in YAC

Definition at line 46 of file read_exodus_grid.c.

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