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       MPI_Win_complete -  Completes an RMA access epoch


       #include <mpi.h>
       int MPI_Win_complete(MPI_Win win)


       win -  window object (handle)


       Completes  an  RMA  access  epoch  on  win  started  by  a  call to MPI_WIN_START. All RMA
       communication calls issued on win during this epoch will have completed at the origin when
       the call returns.

       MPI_WIN_COMPLETE  enforces completion of preceding RMA calls at the origin, but not at the
       target. A put or accumulate call may  not  have  completed  at  the  target  when  it  has
       completed at the origin.


       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.


       The IMPI standard only supports MPI-1 functions.  Hence, this function  is  currently  not
       designed to operate within an IMPI job.


       If  an  error occurs in an MPI function, the current MPI error handler is called to handle
       it.  By default, this error handler aborts the MPI job.  The error handler may be  changed
       with  MPI_Errhandler_set  ;  the predefined error handler MPI_ERRORS_RETURN may be used to
       cause error values to be returned (in C and Fortran; this error handler is less useful  in
       with  the  C++  MPI  bindings.   The predefined error handler MPI::ERRORS_THROW_EXCEPTIONS
       should be used in C++ if the error value needs to be recovered).  Note that MPI  does  not
       guarantee that an MPI program can continue past an error.

       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.  The C++ bindings for
       MPI  do  not  return  error  values;  instead,  error  values are communicated by throwing
       exceptions of type MPI::Exception (but not by default).  Exceptions are only thrown if the
       error value is not MPI::SUCCESS .

       Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI functions will return
       upon an error, there will be no way to recover what the actual error value was.
              - No error; MPI routine completed successfully.
              - Invalid window.  A common error is to use a null window in a call.
              - Other error; use MPI_Error_string to get more information about this error code.
              - This error indicates than an operation has been attempted on a  "closed"  window.
              Certain  one-sided operations can only be performed on windows whose epoch has been
              started with MPI_Win_start.


       MPI_Put(3),   MPI_Get(3),    MPI_Win_create(3),    MPI_Win_start(3),    MPI_Accumulate(3),
       MPI_Win_fence(3),     MPI_Win_free(3),     MPI_Win_get_group(3),     MPI_Win_get_group(3),


       For more information, please see the official MPI Forum web site, which contains the  text
       of both the MPI-1 and MPI-2 standards.  These documents contain detailed information about
       each MPI function (most of which is not duplicated in these man pages).