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MPI_Win_get_attr(3OpenMPI)												MPI_Win_get_attr(3OpenMPI)

NAME

       MPI_Win_get_attr - Obtains the value of a window attribute.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Win_get_attr(MPI_Win win, int win_keyval,
	    void *attribute_val, int *flag)

Fortran Syntax (see FORTRAN 77 NOTES)
       INCLUDE 'mpif.h'
       MPI_WIN_GET_ATTR(WIN, WIN_KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
	    INTEGER WIN, WIN_KEYVAL, IERROR
	    INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL
	    LOGICAL FLAG

C++ Syntax
       #include <mpi.h>
       bool MPI::Win::Get_attr(int win_keyval, void* attribute_val) const

INPUT PARAMETERS

       win	 Window to which the attribute is attached (handle).

       win_keyval
		 Key value (integer).

OUTPUT PARAMETERS

       attribute_val
		 Attribute value, unless ag = false

       flag	 False if no attribute is associated with the key (logical).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Obtains the value of a window attribute.

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++ func-
       tions  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.

Open MPI 1.2							  September 2006					MPI_Win_get_attr(3OpenMPI)