MPI_Errhandler_set(3) MPI MPI_Errhandler_set(3) NAME MPI_Errhandler_set - Sets the error handler for a communicator SYNOPSIS #include "mpi.h" int MPI_Errhandler_set( MPI_Comm comm, MPI_Errhandler errhandler ) INPUT PARAMETERS comm - communicator to set the error handler for (handle) errhandler - new MPI error handler for communicator (handle) NOTES FOR FORTRAN All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have an additional argument ierr at the end of the argument list. ierr 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 the call statement. All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran. ERRORS All MPI routines (except MPI_Wtime and MPI_Wtick ) 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_Errhandler_set ; the prede- fined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error. MPI_SUCCESS - No error; MPI routine completed successfully. MPI_ERR_COMM - Invalid communicator. A common error is to use a null commu- nicator in a call (not even allowed in MPI_Comm_rank ). MPI_ERR_ARG - Invalid argument. Some argument is invalid and is not identi- fied by a specific error class (e.g., MPI_ERR_RANK ). LOCATION errset.c 11/14/2001 MPI_Errhandler_set(3)