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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2014 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 NUM_THREADS 4
#define COUNT 16
#define LOOPS 10000
MPI_Win win;
MTEST_THREAD_RETURN_TYPE run_test(void *arg)
{
int i;
double *local_b;
MPI_Alloc_mem(COUNT * sizeof(double), MPI_INFO_NULL, &local_b);
for (i = 0; i < LOOPS; i++) {
MPI_Get(local_b, COUNT, MPI_DOUBLE, 0, 0, COUNT, MPI_DOUBLE, win);
MPI_Win_flush_all(win);
}
MPI_Free_mem(local_b);
return (MTEST_THREAD_RETURN_TYPE) NULL;
}
int main(int argc, char *argv[])
{
int errs = 0;
int rank, nprocs, i, pmode;
double *win_mem;
MTest_Init_thread(&argc, &argv, MPI_THREAD_MULTIPLE, &pmode);
if (pmode != MPI_THREAD_MULTIPLE) {
fprintf(stderr, "MPI_THREAD_MULTIPLE is not supported\n");
MPI_Abort(MPI_COMM_WORLD, -1);
}
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
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);
}
if (rank == 0) {
errs += MPI_Win_allocate(COUNT * sizeof(double), sizeof(double),
MPI_INFO_NULL, MPI_COMM_WORLD, &win_mem, &win);
}
else {
errs += MPI_Win_allocate(0, sizeof(double), MPI_INFO_NULL, MPI_COMM_WORLD, &win_mem, &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);
MPI_Finalize();
return 0;
}
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