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MPI_Type_delete_attr - Deletes a datatype-caching attribute value
associated with a key.
#include <mpi.h>
int MPI_Type_delete_attr(MPI_Datatype type, int type_keyval)
INCLUDE ’mpif.h’
MPI_TYPE_DELETE_ATTR(TYPE, TYPE_KEYVAL, IERROR)
INTEGER TYPE, TYPE_KEYVAL, IERROR
#include <mpi.h>
void MPI::Datatype::Delete_attr(int type_keyval)
- type
- Data type from which the attribute is deleted
(handle).n
- type_keyval
- Key value (integer).
- IERROR
- Fortran only: Error status (integer).
MPI_Type_delete_attr
deletes a datatype-caching attribute value associated with a key. This routines
partially replaces MPI_Attr_delete, which is now deprecated.
Note
that it is not defined by the MPI standard what happens if the delete_fn
callback invokes other MPI functions. In Open MPI, it is not valid for
delete_fn callbacks (or any of their children) to add or delete attributes
on the same object on which the delete_fn callback is being invoked.
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.
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