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/*
* Copyright (C) 2010. See COPYRIGHT in top-level directory.
*/
#include <stdio.h>
#include <stdlib.h>
#include <mpi.h>
int main(int argc, char ** argv) {
int rank, nproc;
void *ptr;
MPI_Win win;
int wsize = 1024*1024;
void *attr_ptr;
int *attr_val;
int attr_flag;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &nproc);
if (rank == 0) printf("Starting MPI window attribute test with %d processes\n", nproc);
/* WIN_CREATE */
MPI_Alloc_mem(wsize, MPI_INFO_NULL, &ptr);
MPI_Win_create(ptr, wsize, 1, MPI_INFO_NULL, MPI_COMM_WORLD, &win);
/* this function will always return flag=false in MPI-2 */
MPI_Win_get_attr(win, MPI_WIN_MODEL, (void *)&attr_ptr, &attr_flag);
if (!attr_flag && rank==0)
printf("MPI_WIN_MODEL flag missing! \n");
attr_val = (int*)attr_ptr;
if (attr_flag && (*attr_val)!=MPI_WIN_UNIFIED && rank==0)
printf("MPI_WIN_MODEL = MPI_WIN_SEPARATE \n" );
MPI_Win_free(&win);
MPI_Free_mem(ptr);
/* WIN_ALLOCATE */
MPI_Win_allocate(wsize, 1, MPI_INFO_NULL, MPI_COMM_WORLD, &ptr, &win);
/* this function will always return flag=false in MPI-2 */
MPI_Win_get_attr(win, MPI_WIN_MODEL, (void *)&attr_ptr, &attr_flag);
if (!attr_flag && rank==0)
printf("MPI_WIN_MODEL flag missing! \n");
attr_val = (int*)attr_ptr;
if (attr_flag && (*attr_val)!=MPI_WIN_UNIFIED && rank==0)
printf("MPI_WIN_MODEL = MPI_WIN_SEPARATE \n" );
MPI_Win_free(&win);
if (rank == 0) printf("ALL DONE\n");
/* WIN_ALLOCATE */
MPI_Finalize();
return 0;
}
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