1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <stdio.h>
#include "ompi/mpi/c/bindings.h"
#include "ompi/datatype/datatype.h"
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Scatterv = PMPI_Scatterv
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Scatterv";
int MPI_Scatterv(void *sendbuf, int *sendcounts, int *displs,
MPI_Datatype sendtype, void *recvbuf, int recvcount,
MPI_Datatype recvtype, int root, MPI_Comm comm)
{
int i, size, err;
if (MPI_PARAM_CHECK) {
err = MPI_SUCCESS;
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_comm_invalid(comm)) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
FUNC_NAME);
} else if ((ompi_comm_rank(comm) != root && MPI_IN_PLACE == recvbuf) ||
(ompi_comm_rank(comm) == root && MPI_IN_PLACE == sendbuf)) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
}
/* Errors for intracommunicators */
if (OMPI_COMM_IS_INTRA(comm)) {
/* Errors for all ranks */
if ((root >= ompi_comm_size(comm)) || (root < 0)) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ROOT, FUNC_NAME);
}
if (MPI_IN_PLACE != recvbuf) {
if (recvcount < 0) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT,
FUNC_NAME);
}
if (MPI_DATATYPE_NULL == recvtype) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE,
FUNC_NAME);
}
}
/* Errors for the root. Some of these could have been
combined into compound if statements above, but since
this whole section can be compiled out (or turned off at
run time) for efficiency, it's more clear to separate
them out into individual tests. */
if (ompi_comm_rank(comm) == root) {
if (NULL == displs) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
}
if (NULL == sendcounts) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
}
size = ompi_comm_size(comm);
for (i = 0; i < size; ++i) {
OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcounts[i]);
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
}
}
}
/* Errors for intercommunicators */
else {
if (! ((root >= 0 && root < ompi_comm_remote_size(comm)) ||
MPI_ROOT == root || MPI_PROC_NULL == root)) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ROOT, FUNC_NAME);
}
/* Errors for the receivers */
if (MPI_ROOT != root && MPI_PROC_NULL != root) {
if (recvcount < 0) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
}
if (MPI_DATATYPE_NULL == recvtype) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
}
}
/* Errors for the root. Ditto on the comment above -- these
error checks could have been combined above, but let's
make the code easier to read. */
else if (MPI_ROOT == root) {
if (NULL == displs) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
}
if (NULL == sendcounts) {
return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
}
size = ompi_comm_size(comm);
for (i = 0; i < size; ++i) {
OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcounts[i]);
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
}
}
}
}
/* Invoke the coll component to perform the back-end operation */
err = comm->c_coll.coll_scatterv(sendbuf, sendcounts, displs, sendtype,
recvbuf, recvcount, recvtype, root, comm);
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
}
|
