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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include "stdio.h"
#include "stdlib.h"
#include "mpitest.h"
#include "mpithreadtest.h"
#define COUNT 1
#define NUM_THREADS 4
#define LOOPS 100000
MPI_Win win;
int errs = 0, dummy;
static MTEST_THREAD_RETURN_TYPE run_test(void *arg)
{
int i;
for (i = 0; i < LOOPS; i++) {
/* send a global variable, rather than a stack variable, so
* other threads can access the address during flush */
MPI_Put(&dummy, 1, MPI_INT, 0, 0, 1, MPI_INT, win);
MPI_Win_flush(0, win);
}
return (MTEST_THREAD_RETURN_TYPE) NULL;
}
int main(int argc, char *argv[])
{
int nprocs, i, pmode;
char *win_buf;
MTest_Init_thread(&argc, &argv, MPI_THREAD_MULTIPLE, &pmode);
if (pmode != MPI_THREAD_MULTIPLE) {
fprintf(stderr, "Thread Multiple not supported by the MPI implementation\n");
MPI_Abort(MPI_COMM_WORLD, -1);
}
MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
if (nprocs < 2) {
printf("Run this program with 2 or more processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
errs +=
MPI_Win_allocate(COUNT * sizeof(int), sizeof(int), MPI_INFO_NULL, MPI_COMM_WORLD, &win_buf,
&win);
errs += MPI_Win_lock_all(0, win);
for (i = 0; i < NUM_THREADS; i++)
errs += MTest_Start_thread(run_test, NULL);
errs += MTest_Join_threads();
errs += MPI_Win_unlock_all(win);
errs += MPI_Win_free(&win);
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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