NAME

       MPI_Win_set_attr - Sets the value of a window attribute.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Win_set_attr(MPI_Win win, int win_keyval, void *attribute_val)

Fortran Syntax (see FORTRAN 77 NOTES)

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_WIN_SET_ATTR(WIN, WIN_KEYVAL, ATTRIBUTE_VAL, IERROR)
            INTEGER WIN, WIN_KEYVAL, IERROR
            INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Win_set_attr(win, win_keyval, attribute_val, ierror)
            TYPE(MPI_Win), INTENT(IN) :: win
            INTEGER, INTENT(IN) :: win_keyval
            INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN) :: attribute_val
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       #include <mpi.h>
       void MPI::Win::Set_attr(int win_keyval, const void* attribute_val)

INPUT/OUTPUT PARAMETER

       win       Window to which attribute will be attached (handle).

INPUT PARAMETERS

       win_keyval
                 Key value (integer).

       attribute_val
                 Attribute value.

OUTPUT PARAMETER

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

FORTRAN 77 NOTES

       The  MPI  standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90.
       FORTRAN 77 users may use the non-portable syntax

            INTEGER*MPI_ADDRESS_KIND ATTRIBUTE_VAL

       where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the  declared  integer  in
       bytes.

ERRORS

       Almost  all  MPI  routines  return  an  error  value; C routines as the value of the function and Fortran
       routines in the last argument. C++ functions do not return errors. If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS, then on error the  C++  exception  mechanism  will  be  used  to  throw  an
       MPI::Exception object.

       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.

4.1.6                                             Sep 30, 2023                               MPI_Win_set_attr(3)