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xt_redist.c File Reference
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include "core/core.h"
#include "xt/xt_core.h"
#include "xt/xt_redist.h"
#include "xt/xt_mpi.h"
#include "core/ppm_xfuncs.h"
#include "xt_redist_internal.h"
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Functions

Xt_redist xt_redist_copy (Xt_redist redist)
 
void xt_redist_delete (Xt_redist redist)
 
void xt_redist_s_exchange (Xt_redist redist, int num_arrays, const void **src_data, void **dst_data)
 
void xt_redist_s_exchange1 (Xt_redist redist, const void *src_data, void *dst_data)
 
MPI_Datatype xt_redist_get_send_MPI_Datatype (Xt_redist redist, int rank)
 
MPI_Datatype xt_redist_get_recv_MPI_Datatype (Xt_redist redist, int rank)
 
MPI_Comm xt_redist_get_MPI_Comm (Xt_redist redist)
 
int xt_redist_get_msg_ranks (Xt_redist redist, enum xt_msg_direction direction, int **ranks)
 
void xt_redist_msgs_strided_copy (size_t n, struct Xt_redist_msg *restrict src, size_t src_stride, struct Xt_redist_msg *restrict dst, size_t dst_stride, MPI_Comm comm)
 
void xt_redist_msgs_strided_destruct (size_t n, struct Xt_redist_msg *msgs, MPI_Comm comm, size_t ofs_stride)
 
void xt_redist_check_comms (Xt_redist *redists, int num_redists, MPI_Comm comm)
 
size_t xt_ranks_uniq_count (size_t num_rank_sets, size_t *restrict num_ranks, const int *ranks[num_rank_sets])
 
MPI_Datatype xt_create_compound_datatype (size_t num_redists, const MPI_Aint displacements[num_redists], const MPI_Datatype datatypes[num_redists], const int block_lengths[num_redists], MPI_Comm comm)
 

Detailed Description

Copyright
Copyright (C) 2016 Jörg Behrens behre.nosp@m.ns@d.nosp@m.krz.d.nosp@m.e Moritz Hanke hanke.nosp@m.@dkr.nosp@m.z.de Thomas Jahns jahns.nosp@m.@dkr.nosp@m.z.de
Author
Jörg Behrens behre.nosp@m.ns@d.nosp@m.krz.d.nosp@m.e Moritz Hanke hanke.nosp@m.@dkr.nosp@m.z.de Thomas Jahns jahns.nosp@m.@dkr.nosp@m.z.de

Definition in file xt_redist.c.

Function Documentation

◆ xt_create_compound_datatype()

MPI_Datatype xt_create_compound_datatype ( size_t  num_redists,
const MPI_Aint  displacements[num_redists],
const MPI_Datatype  datatypes[num_redists],
const int  block_lengths[num_redists],
MPI_Comm  comm 
)

Definition at line 181 of file xt_redist.c.

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◆ xt_ranks_uniq_count()

size_t xt_ranks_uniq_count ( size_t  num_rank_sets,
size_t *restrict  num_ranks,
const int *  ranks[num_rank_sets] 
)

Definition at line 152 of file xt_redist.c.

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◆ xt_redist_check_comms()

void xt_redist_check_comms ( Xt_redist *  redists,
int  num_redists,
MPI_Comm  comm 
)

Definition at line 137 of file xt_redist.c.

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◆ xt_redist_copy()

Xt_redist xt_redist_copy ( Xt_redist  redist)

redist copy constructor

Parameters
[in,out]redistredistribution structure

Definition at line 61 of file xt_redist.c.

◆ xt_redist_delete()

void xt_redist_delete ( Xt_redist  redist)

destructor

Parameters
[in,out]redistredistribution structure

Definition at line 66 of file xt_redist.c.

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◆ xt_redist_get_MPI_Comm()

MPI_Comm xt_redist_get_MPI_Comm ( Xt_redist  redist)

returns a MPI communicator, which the redistribution is based on

Parameters
[in]redistredistribution structure
Returns
MPI communicator, which the redistribution is based on

Definition at line 92 of file xt_redist.c.

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◆ xt_redist_get_msg_ranks()

int xt_redist_get_msg_ranks ( Xt_redist  redist,
enum xt_msg_direction  direction,
int **  ranks 
)

Definition at line 97 of file xt_redist.c.

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◆ xt_redist_get_recv_MPI_Datatype()

MPI_Datatype xt_redist_get_recv_MPI_Datatype ( Xt_redist  redist,
int  rank 
)

gets a copy of the MPI_Datatype used for the data of the recv operation with the given rank

Parameters
[in]redistredistribution structure
[in]rankMPI rank
Returns
MPI_Datatype for the data of the recv operation with the given rank
Remarks
returns MPI_DATATYPE_NULL if there is no recv operation with the given rank

Definition at line 87 of file xt_redist.c.

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◆ xt_redist_get_send_MPI_Datatype()

MPI_Datatype xt_redist_get_send_MPI_Datatype ( Xt_redist  redist,
int  rank 
)

gets a copy of the MPI_Datatype used for the data of the send operation with the given rank

Parameters
[in]redistredistribution structure
[in]rankMPI rank
Returns
MPI_Datatype for the data of the send operation with the given rank
Remarks
returns MPI_DATATYPE_NULL if there is no send operation with the given rank

Definition at line 82 of file xt_redist.c.

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◆ xt_redist_msgs_strided_copy()

void xt_redist_msgs_strided_copy ( size_t  n,
struct Xt_redist_msg *restrict  src,
size_t  src_stride,
struct Xt_redist_msg *restrict  dst,
size_t  dst_stride,
MPI_Comm  comm 
)

Definition at line 105 of file xt_redist.c.

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◆ xt_redist_msgs_strided_destruct()

void xt_redist_msgs_strided_destruct ( size_t  n,
struct Xt_redist_msg *  msgs,
MPI_Comm  comm,
size_t  ofs_stride 
)

Definition at line 124 of file xt_redist.c.

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◆ xt_redist_s_exchange()

void xt_redist_s_exchange ( Xt_redist  redist,
int  num_arrays,
const void **  src_data,
void **  dst_data 
)

synchronous redistribution of data

Parameters
[in]redistredistribution structure
[in]num_arraysnumber of base addresses in src_data and dst_data
[in]src_dataarray containing the addresses of the first elements of the input data
[in,out]dst_dataarray containing the addresses of the first elements of the output data
Remarks
The above implies that NULL or any other invalid pointer must not be used in either src_data or dst_data.

Definition at line 71 of file xt_redist.c.

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◆ xt_redist_s_exchange1()

void xt_redist_s_exchange1 ( Xt_redist  redist,
const void *  src_data,
void *  dst_data 
)

synchronous redistribution of data - single array case

Parameters
[in]redistredistribution structure
[in]src_dataaddress of the first element of the input data
[in,out]dst_dataaddress of the first element of the output data
Remarks
The above implies that NULL or any other invalid pointer must not be used in either src_data or dst_data.

Definition at line 77 of file xt_redist.c.

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