NAME

       MPI_Attr_get - Retrieves attribute value by key -- use of this routine is deprecated.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Attr_get(MPI_Comm comm, int keyval,void *attribute_val,
            int *flag )

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_ATTR_GET(COMM, KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
            INTEGER   COMM, KEYVAL, ATTRIBUTE_VAL, IERROR
            LOGICAL   FLAG

INPUT PARAMETERS

       comm      Communicator to which attribute is attached (handle).

       keyval
                  Key value (integer).

OUTPUT PARAMETERS

       attribute_val
                 Attribute value, unless flag = false.

       flag      True if an attribute value was extracted; false if no attribute is associated with the key.

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       Note that use of this routine is deprecated as of MPI-2. Please use MPI_Comm_get_attr instead.

       This deprecated routine is not available in C++.

       Retrieves  attribute  value  by  key.  The call is erroneous if there is no key with value keyval. On the
       other hand, the call is correct if the key value exists, but no attribute is attached on  comm  for  that
       key;  in  such  case, the call returns flag = false. In particular MPI_KEYVAL_INVALID is an erroneous key
       value.

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.

SEE ALSO

       MPI_Comm_get_attr