Dear All, I am trying to use dynamic RMA windows in fortran. In my case I would like to attach automatic array to dynamic window. The question is if it is correct and allowed in MPICH. I feel that it is not working, at least in cray-mpich/7.3.2. I have a subroutine that use RMA windows: SUBROUTINE foo(x, y, z , ...) USE mpi ... INTEGER, INTENT(IN) :: x, y, z REAL(KIND=8) :: buffer(x, y, z) INTEGER(kind=MPI_INTEGER_KIND) :: win_info, win, comm INTEGER(kind=MPI_INTEGER_KIND) :: buff_size ... buff_size = x*y*z*8 CALL MPI_Info_create(win_info, ierror) CALL MPI_Info_set(win_info, "no_locks", "true", ierror) CALL MPI_Win_create_dynamic(win_info, comm, win, ierror) CALL MPI_Win_attach(win, buffer, buff_size, ierror) ... This produces segmentation fault when MPI_Put is called on a window, while exactly the same routine code with static MPI_Win_create on buffer instead of create_dynamic+attach works fine. As far as I understand buffer is in this case "simply contiguous" in a sense of the MPI Standard. Any help would be appreciated! Best Regards, Maciej _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss