NAME

       MPI_Win_create_dynamic  -   Create  an MPI Window object for one-sided communication.  This window allows
       memory to be dynamically exposed and un-exposed for RMA operations.

SYNOPSIS

       int MPI_Win_create_dynamic(MPI_Info info, MPI_Comm comm, MPI_Win *win)

       This is a collective call executed by all processes in the group of comm. It returns a window win without
       memory  attached.  Existing  process  memory  can  be attached as described below. This routine returns a
       window object that can be used by these processes to perform RMA operations on attached  memory.  Because
       this  window  has  special  properties,  it  will sometimes be referred to as a dynamic window.  The info
       argument can be used to specify hints similar to the info argument for MPI_Win_create .

       In the case of a window created with MPI_Win_create_dynamic , the target_disp for all  RMA  functions  is
       the  address  at  the target; i.e., the effective window_base is MPI_BOTTOM and the disp_unit is one. For
       dynamic windows, the target_disp argument to RMA communication  operations  is  not  restricted  to  non-
       negative  values.  Users  should  use MPI_Get_address at the target process to determine the address of a
       target memory location and communicate this address to the origin process.

INPUT PARAMETERS

       info   - info argument (handle)
       comm   - communicator (handle)

OUTPUT PARAMETERS

       win    - window object returned by the call (handle)

NOTES

       Users are cautioned that displacement arithmetic can overflow in variables of type MPI_Aint and result in
       unexpected values on some platforms. This issue may be addressed in a future version of MPI.

       Memory  in  this  window  may  not be used as the target of one-sided accesses in this window until it is
       attached using the function MPI_Win_attach .  That is, in addition  to  using  MPI_Win_create_dynamic  to
       create  an  MPI  window, the user must use MPI_Win_attach before any local memory may be the target of an
       MPI RMA operation. Only memory that is currently accessible may be attached.

THREAD AND INTERRUPT SAFETY

       This routine is thread-safe.  This means that this routine may be safely used by multiple threads without
       the  need  for  any  user-provided thread locks.  However, the routine is not interrupt safe.  Typically,
       this is due to the use of memory allocation routines such as malloc or other non-MPICH  runtime  routines
       that are themselves not interrupt-safe.

NOTES FOR FORTRAN

       All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the
       end of the argument list.  ierr is an integer and has the same meaning as the return value of the routine
       in C.  In Fortran, MPI routines are subroutines, and are invoked with the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

ERRORS

       All  MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as the value of the
       function and Fortran routines in the last argument.  Before the value is returned, the current MPI  error
       handler  is called.  By default, this error handler aborts the MPI job.  The error handler may be changed
       with   MPI_Comm_set_errhandler   (for   communicators),   MPI_File_set_errhandler   (for   files),    and
       MPI_Win_set_errhandler  (for  RMA windows).  The MPI-1 routine MPI_Errhandler_set may be used but its use
       is deprecated.  The predefined error handler MPI_ERRORS_RETURN may be used to cause error  values  to  be
       returned.   Note that MPI does not guarentee that an MPI program can continue past an error; however, MPI
       implementations will attempt to continue whenever possible.

       MPI_SUCCESS
              - No error; MPI routine completed successfully.
       MPI_ERR_ARG
              - Invalid argument.  Some argument is invalid and is not identified  by  a  specific  error  class
              (e.g., MPI_ERR_RANK ).
       MPI_ERR_COMM
              -  Invalid communicator.  A common error is to use a null communicator in a call (not even allowed
              in MPI_Comm_rank ).
       MPI_ERR_INFO
              - Invalid Info
       MPI_ERR_OTHER
              - Other error; use MPI_Error_string to get more information about this error code.
       MPI_ERR_SIZE
              -

SEE ALSO

       MPI_Win_attach MPI_Win_detach MPI_Win_allocate MPI_Win_allocate_shared MPI_Win_create MPI_Win_free

                                                   11/12/2016                          MPI_Win_create_dynamic(3)