1 /*
2 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
3 * University Research and Technology
4 * Corporation. All rights reserved.
5 * Copyright (c) 2004-2005 The University of Tennessee and The University
6 * of Tennessee Research Foundation. All rights
7 * reserved.
8 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
9 * University of Stuttgart. All rights reserved.
10 * Copyright (c) 2004-2005 The Regents of the University of California.
11 * All rights reserved.
12 * Copyright (c) 2015 Research Organization for Information Science
13 * and Technology (RIST). All rights reserved.
14 * $COPYRIGHT$
15 *
16 * Additional copyrights may follow
17 *
18 * $HEADER$
19 */
20
21 #include "ompi_config.h"
22
23 #include "ompi/constants.h"
24 #include "ompi/datatype/ompi_datatype.h"
25 #include "coll_self.h"
26
27
28 /*
29 * allgather_intra
30 *
31 * Function: - allgather
32 * Accepts: - same as MPI_Allgather()
33 * Returns: - MPI_SUCCESS, or error code
34 */
35 int mca_coll_self_allgather_intra(const void *sbuf, int scount,
36 struct ompi_datatype_t *sdtype, void *rbuf,
37 int rcount, struct ompi_datatype_t *rdtype,
38 struct ompi_communicator_t *comm,
39 mca_coll_base_module_t *module)
40 {
41 if (MPI_IN_PLACE == sbuf) {
42 return MPI_SUCCESS;
43 } else {
44 return ompi_datatype_sndrcv(sbuf, scount, sdtype,
45 rbuf, rcount, rdtype);
46 }
47 }