-
Notifications
You must be signed in to change notification settings - Fork 14
/
fcollect.c
105 lines (85 loc) · 2.96 KB
/
fcollect.c
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
/*
*
* Copyright (c) 2016 - 2018
* Stony Brook University
* Copyright (c) 2015 - 2018
* Los Alamos National Security, LLC.
* Copyright (c) 2011 - 2015
* University of Houston System and UT-Battelle, LLC.
* Copyright (c) 2009 - 2015
* Silicon Graphics International Corp. SHMEM is copyrighted
* by Silicon Graphics International Corp. (SGI) The OpenSHMEM API
* (shmem) is released by Open Source Software Solutions, Inc., under an
* agreement with Silicon Graphics International Corp. (SGI).
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* o Neither the name of the University of Houston System,
* UT-Battelle, LLC. nor the names of its contributors may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* run on 4 PEs
*
*/
#include <stdio.h>
#include <shmem.h>
long pSync[SHMEM_BCAST_SYNC_SIZE];
int src;
int
main(void)
{
int npes;
int me;
int *dst;
int i;
shmem_init();
npes = shmem_n_pes();
me = shmem_my_pe();
dst = (int *) shmem_malloc(64);
for (i = 0; i < 4; i++) {
dst[i] = 10101;
}
src = me + 100;
printf("%8s: dst[%d/%d] = %d, %d, %d, %d\n",
"BEFORE", me, npes, dst[0], dst[1], dst[2], dst[3]);
for (i = 0; i < SHMEM_BCAST_SYNC_SIZE; i += 1) {
pSync[i] = SHMEM_SYNC_VALUE;
}
shmem_barrier_all();
shmem_fcollect32(dst, &src, 1, 0, 0, npes, pSync);
shmem_barrier_all();
/*
* end state of "dst" = 100, 101, 102, ...
*/
printf("%8s: dst[%d/%d] = %d, %d, %d, %d\n",
"AFTER", me, npes, dst[0], dst[1], dst[2], dst[3]);
shmem_free(dst);
shmem_finalize();
return 0;
}