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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include <stdio.h>
#include <stdlib.h>
#include <mpi.h>
#include "mpitest.h"
#define DATA_NELTS 1000
#define NUM_WIN 1000
#define DATA_SZ (DATA_NELTS*sizeof(int))
int main(int argc, char **argv)
{
int rank, nproc, i;
void *base_ptrs[NUM_WIN];
MPI_Win windows[NUM_WIN];
MTest_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &nproc);
if (rank == 0)
MTestPrintfMsg(1, "Starting MPI window creation test with %d processes\n", nproc);
/* Perform a pile of window creations */
for (i = 0; i < NUM_WIN; i++) {
#ifdef USE_WIN_ALLOCATE
if (rank == 0)
MTestPrintfMsg(1, " + Allocating window %d\n", i);
MPI_Win_allocate(DATA_SZ, 1, MPI_INFO_NULL, MPI_COMM_WORLD, &base_ptrs[i], &windows[i]);
#elif defined(USE_WIN_ALLOCATE_NONCONTIG)
MPI_Info info = MPI_INFO_NULL;
MPI_Info_create(&info);
MPI_Info_set(info, "alloc_shared_noncontig", "true");
if (rank == 0)
MTestPrintfMsg(1, " + Allocating window (alloc_shared_noncontig=true) %d\n", i);
MPI_Win_allocate(DATA_SZ, 1, info, MPI_COMM_WORLD, &base_ptrs[i], &windows[i]);
MPI_Info_free(&info);
#else
if (rank == 0)
MTestPrintfMsg(1, " + Creating window %d\n", i);
MPI_Alloc_mem(DATA_SZ, MPI_INFO_NULL, &base_ptrs[i]);
MPI_Win_create(base_ptrs[i], DATA_SZ, 1, MPI_INFO_NULL, MPI_COMM_WORLD, &windows[i]);
#endif
}
MPI_Barrier(MPI_COMM_WORLD);
/* Free all the windows */
for (i = 0; i < NUM_WIN; i++) {
if (rank == 0)
MTestPrintfMsg(1, " + Freeing window %d\n", i);
MPI_Win_free(&windows[i]);
#if !defined(USE_WIN_ALLOCATE) && !defined(USE_WIN_ALLOCATE_NONCONTIG)
MPI_Free_mem(base_ptrs[i]);
#endif
}
MTest_Finalize(0);
return 0;
}
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