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
|
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* (C) 2011 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
/** MPI Mutex test -- James Dinan <dinan@mcs.anl.gov>
*
* All processes create N mutexes then lock+unlock all mutexes on all
* processes.
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <mpi.h>
#define NUM_MUTEXES 100
const int verbose = 0;
int main(int argc, char ** argv) {
int rank, nproc, i, j;
MPIX_Mutex mtx;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &nproc);
if (rank == 0 && verbose)
printf("Starting mutex test with %d processes\n", nproc);
MPIX_Mutex_create(NUM_MUTEXES, MPI_COMM_WORLD, &mtx);
for (i = 0; i < nproc; i++)
for (j = 0; j < NUM_MUTEXES; j++) {
MPIX_Mutex_lock( mtx, j, (rank+i)%nproc);
MPIX_Mutex_unlock(mtx, j, (rank+i)%nproc);
}
if (verbose) {
printf(" + %3d done\n", rank);
fflush(NULL);
}
MPIX_Mutex_free(&mtx);
if (rank == 0)
printf(" No Errors\n");
MPI_Finalize();
return 0;
}
|
