NAME

       MPI_Win_create_dynamic  -  One-sided  MPI  call  that  returns  a  window  object  for RMA
       operations.

SYNTAX

C Syntax

       #include <mpi.h>
       MPI_Win_create_dynamic(MPI_Info info, MPI_Comm comm, MPI_Win *win)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_WIN_CREATE_DYNAMIC(INFO, COMM, WIN, IERROR)
            INTEGER INFO, COMM, WIN, IERROR

INPUT PARAMETERS

       info      Info argument (handle).

       comm      Communicator (handle).

OUTPUT PARAMETERS

       win       Window object returned by the call (handle).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_create_dynamic is a one-sided MPI communication collective call  executed  by  all
       processes  in  the  group of comm. It returns a window object without memory attached that
       can be used by these processes to perform RMA operations.

       The following info keys are supported:

       no_locks  If set to true, then the implementation may assume  that  the  local  window  is
                 never  locked  (by  a  call  to MPI_Win_lock or MPI_Win_lock_all).  Setting this
                 value if only active synchronization may  allow  the  implementation  to  enable
                 certain optimizations.

       accumulate_ordering
                 By  default,  accumulate operations from one initiator to one target on the same
                 window are strictly ordered.  If the info  key  accumulate_ordering  is  set  to
                 none,  no  ordering of accumulate operations guaranteed.  They key can also be a
                 comma-separated list of required orderings consisting of rar, war, raw, and  waw
                 for  read-after-read, write-after-read, read-after-write, and write-after-write,
                 respectively.  Looser ordering constraints are  likely  to  result  in  improved
                 performance.

       accumulate_ops
                 If set to same_op, the implementation will assume that all concurrent accumulate
                 calls to the same target address  will  use  the  same  operation.   If  set  to
                 same_op_no_op,   then   the  implementation  will  assume  that  all  concurrent
                 accumulate calls to the same target address  will  use  the  same  operation  or
                 MPI_NO_OP.  The default is same_op_no_op.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and
       Fortran routines in the last argument.

       Before the error value is returned, the current MPI error handler is called.  By  default,
       this  error  handler aborts the MPI job, except for I/O function errors. The error handler
       may   be   changed   with   MPI_Comm_set_errhandler;   the   predefined   error    handler
       MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not
       guarantee that an MPI program can continue past an error.