MPIR_ERR_COMM_NULL   67 ompi/mca/io/romio321/romio/adio/include/adioi_errmsg.h     MPIR_ERR_COMM_NULL (null communicator. from MPICH)
MPIR_ERR_COMM_NULL   69 ompi/mca/io/romio321/romio/adio/include/mpio_error.h #ifndef MPIR_ERR_COMM_NULL