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#ifndef __CS_PART_TO_BLOCK_H__
#define __CS_PART_TO_BLOCK_H__
/*============================================================================
* Convert between general domain partition and block distribution.
*============================================================================*/
/*
This file is part of Code_Saturne, a general-purpose CFD tool.
Copyright (C) 1998-2016 EDF S.A.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/*----------------------------------------------------------------------------*/
#if defined(HAVE_MPI)
#include <mpi.h>
#endif
/*----------------------------------------------------------------------------
* Local headers
*----------------------------------------------------------------------------*/
#include "cs_defs.h"
#include "cs_block_dist.h"
/*----------------------------------------------------------------------------*/
BEGIN_C_DECLS
/*=============================================================================
* Macro definitions
*============================================================================*/
/*============================================================================
* Type definitions
*============================================================================*/
/* Opaque general domain partitioning to block distribution structure */
#if defined(HAVE_MPI)
typedef struct _cs_part_to_block_t cs_part_to_block_t;
#endif
/*=============================================================================
* Public function prototypes
*============================================================================*/
#if defined(HAVE_MPI)
/*----------------------------------------------------------------------------
* Initialize partition to block distributor based on global entity numbers.
*
* arguments:
* comm <-- communicator
* bi <-- block size and range info
* n_ents <-- number of elements in partition
* global_ent_num <-- global entity numbers
*
* returns:
* initialized partition to block distributor
*----------------------------------------------------------------------------*/
cs_part_to_block_t *
cs_part_to_block_create_by_gnum(MPI_Comm comm,
cs_block_dist_info_t bi,
cs_lnum_t n_ents,
const cs_gnum_t global_ent_num[]);
/*----------------------------------------------------------------------------
* Destroy a partition to block distributor structure.
*
* arguments:
* d <-> pointer to partition to block distributor structure pointer
*----------------------------------------------------------------------------*/
void
cs_part_to_block_destroy(cs_part_to_block_t **d);
/*----------------------------------------------------------------------------
* Transfer ownership of global entity numbers to a block distributor.
*
* The global_ent_num[] array should be the same as the one used
* for the creation of the block distributor.
*
* arguments:
* d <-- distributor helper
* global_ent_num <-> global entity numbers
*----------------------------------------------------------------------------*/
void
cs_part_to_block_transfer_gnum(cs_part_to_block_t *d,
cs_gnum_t global_ent_num[]);
/*----------------------------------------------------------------------------
* Return number of entities associated with local partition
*
* arguments:
* d <-- distribtor helper
*
* returns:
* number of entities associated with distribution receive
*----------------------------------------------------------------------------*/
cs_lnum_t
cs_part_to_block_get_n_part_ents(cs_part_to_block_t *d);
/*----------------------------------------------------------------------------
* Copy array data from general domain partition to block distribution.
*
* arguments:
* d <-- partition to block distributor
* datatype <-- type of data considered
* stride <-- number of values per entity (interlaced)
* part_values <-- values in general domain partition
* block_values --> values in block distribution
*----------------------------------------------------------------------------*/
void
cs_part_to_block_copy_array(cs_part_to_block_t *d,
cs_datatype_t datatype,
int stride,
const void *part_values,
void *block_values);
/*----------------------------------------------------------------------------
* Copy local index from general domain partition to block distribution.
*
* This is useful for distribution of entity connectivity information.
*
* arguments:
* d <-- partition to block distributor
* part_index <-- local index in general partition distribution
* (size: n_part_entities + 1)
* block_index --> local index in block distribution
* (size: n_block_entities + 1)
*----------------------------------------------------------------------------*/
void
cs_part_to_block_copy_index(cs_part_to_block_t *d,
const cs_lnum_t *part_index,
cs_lnum_t *block_index);
/*----------------------------------------------------------------------------
* Copy indexed data from general domain partition to block distribution.
*
* This is useful for distribution of entity connectivity information.
*
* arguments:
* d <-- partition to block distributor
* datatype <-- type of data considered
* part_index <-- local index in general distribution
* part_val <-- numbers in general distribution
* (size: part_index[n_part_ents])
* block_index --> local index in block distribution
* block_val --> values in block distribution
* (size: block_index[n_block_ents])
*----------------------------------------------------------------------------*/
void
cs_part_to_block_copy_indexed(cs_part_to_block_t *d,
cs_datatype_t datatype,
const cs_lnum_t *part_index,
const void *part_val,
const cs_lnum_t *block_index,
void *block_val);
#endif /* defined(HAVE_MPI) */
/*----------------------------------------------------------------------------*/
END_C_DECLS
#endif /* __CS_PART_TO_BLOCK_H__ */
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