NAME

       MPIL_Request_get_name -  LAM/MPI-specific function to get a string name on an MPI_Request

SYNOPSIS

       #include <mpi.h>
       char *
       MPIL_Request_get_name(MPI_Request req)

INPUT PARAMETERS

       req    - MPI_Request (handle)

RETURN VALUE

       If  a  valid MPI_Request is passed to this function, a valid string will be returned, even
       if no name was ever set on the request.  The string that  is  returned  is  a  pointer  to
       internal storage and should not be modified or freed.

ERRORS

       If  an  error occurs in an MPI function, the current MPI error handler is called to handle
       it.  By default, this error handler aborts the MPI job.  The error handler may be  changed
       with  MPI_Errhandler_set  ;  the predefined error handler MPI_ERRORS_RETURN may be used to
       cause error values to be returned (in C and Fortran; this error handler is less useful  in
       with  the  C++  MPI  bindings.   The predefined error handler MPI::ERRORS_THROW_EXCEPTIONS
       should be used in C++ if the error value needs to be recovered).  Note that MPI  does  not
       guarantee that an MPI program can continue past an error.

       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.  The C++ bindings for
       MPI  do  not  return  error  values;  instead,  error  values are communicated by throwing
       exceptions of type MPI::Exception (but not by default).  Exceptions are only thrown if the
       error value is not MPI::SUCCESS .

       Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI functions will return
       upon an error, there will be no way to recover what the actual error value was.
       MPI_SUCCESS
              - No error; MPI routine completed successfully.
       MPI_ERR_ARG
              - Invalid argument.  Some argument is invalid and is not identified by  a  specific
              error class.  This is typically a NULL pointer or other such error.

SEE ALSO

       MPIL_Request_set_name

LOCATION

       mpil_rgetname.c