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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)
- 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.
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++ 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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