NAME

       MPI_Comm_set_errhandler  - Attaches a new error handler to a communicator.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Comm_set_errhandler(MPI_Comm comm,
            MPI_Errhandler errhandler)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_COMM_SET_ERRHANDLER(COMM, ERRHANDLER, IERROR)
            INTEGER   COMM, ERRHANDLER, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Comm_set_errhandler(comm, errhandler, ierror)
            TYPE(MPI_Comm), INTENT(IN) :: comm
            TYPE(MPI_Errhandler), INTENT(IN) :: errhandler
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       #include <mpi.h>
       void MPI::Comm::Set_errhandler(const MPI::Errhandler& errhandler)

INPUT/OUTPUT PARAMETER

       comm      Communicator (handle).

OUTPUT PARAMETERS

       errhandler
                 New error handler for communicator (handle).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Comm_set_errhandler  attaches a new error handler to a communicator. The error handler must be either
       a predefined error handler or an error handler created by a call to MPI_Comm_create_errhandler. This call
       is identical to MPI_Errhandler_set, the use of which is deprecated.

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.

4.1.6                                             Sep 30, 2023                        MPI_Comm_set_errhandler(3)