MPI_Abort - Terminates MPI execution environment
int MPI_Abort(MPI_Comm comm, int errorcode)
- - communicator of tasks to abort
- - error code to return to invoking environment
Terminates all MPI processes associated with the communicator comm
most systems (all to date), terminates all
The user is responsible for ensuring that multiple threads do not try to update
the same MPI object from different threads. This routine should not be used
from within a signal handler.
The MPI standard defined a thread-safe interface but this does not mean that all
routines may be called without any thread locks. For example, two threads must
not attempt to change the contents of the same MPI_Info
concurrently. The user is responsible in this case for using some mechanism,
such as thread locks, to ensure that only one thread at a time makes use of
this routine. Because the MPI_Abort
routine is intended to ensure that
an MPI process (and possibly an entire job), it cannot wait for a thread to
release a lock or other mechanism for atomic access.
All MPI routines in Fortran (except for MPI_WTIME
have an additional argument ierr
at the end of the argument list.
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
All MPI objects (e.g., MPI_Datatype
) are of type
All MPI routines (except MPI_Wtime
) return an error
value; C routines as the value of the function and Fortran routines in the
last argument. Before the value is returned, the current MPI error handler is
called. By default, this error handler aborts the MPI job. The error handler
may be changed with MPI_Comm_set_errhandler
(for files), and MPI_Win_set_errhandler
(for RMA windows). The MPI-1 routine MPI_Errhandler_set
may be used but
its use is deprecated. The predefined error handler MPI_ERRORS_RETURN
may be used to cause error values to be returned. Note that MPI does
guarentee that an MPI program can continue past an error; however,
MPI implementations will attempt to continue whenever possible.
- - No error; MPI routine completed successfully.