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MPI_Abort - Terminates MPI execution environment.
#include <mpi.h>
int MPI_Abort(MPI_Comm comm, int errorcode)
INCLUDE ’mpif.h’
MPI_ABORT(COMM, ERRORCODE, IERROR)
INTEGER COMM, ERRORCODE, IERROR
#include <mpi.h>
void Comm::Abort(int errorcode)
import mpi.*;
void MPI.Abort(int errorcode)
- comm
- Communicator of tasks to abort.
- errorcode
- Error
code to return to invoking environment.
- IERROR
- Fortran
only: Error status (integer).
This routine makes a "best attempt"
to abort all tasks in the group of comm. This function does not require
that the invoking environment take any action with the error code. However,
a UNIX or POSIX environment should handle this as a return errorcode from
the main program or an abort (errorcode).
The long-term goal of the Open
MPI implementation is to terminate all processes in all tasks that contain
a process in comm, and the error code is not returned to the invoking environment.
At the moment, this isn’t fully implemented and MPI_Abort will terminate
the entire job. The Java implementation currently does not allow specification
of a communicator and aborts the entire job - this will be updated to support
the long-term implementation at a later date.
Note: All associated processes
are sent a SIGTERM.
Almost all MPI routines return an error value;
C routines as the value of the function and Fortran routines in the last
argument. C++ and Java 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 - similar behavior
is followed by Java.
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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