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
|
/*
* 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/constants.h"
#include "coll_self.h"
#include "ompi/datatype/datatype.h"
/*
* scatterv_intra
*
* Function: - scatterv
* Accepts: - same arguments as MPI_Scatter()
* Returns: - MPI_SUCCESS or error code
*/
int mca_coll_self_scatterv_intra(void *sbuf, int *scounts,
int *disps, struct ompi_datatype_t *sdtype,
void *rbuf, int rcount,
struct ompi_datatype_t *rdtype, int root,
struct ompi_communicator_t *comm)
{
if (MPI_IN_PLACE == rbuf) {
return MPI_SUCCESS;
} else {
int err;
ptrdiff_t lb, extent;
err = ompi_ddt_get_extent(sdtype, &lb, &extent);
if (OMPI_SUCCESS != err) {
return OMPI_ERROR;
}
return ompi_ddt_sndrcv(((char *) sbuf) + disps[0]*extent, scounts[0],
sdtype, rbuf, rcount, rdtype);
}
}
|
