UB                 72 ompi/datatype/ompi_datatype_module.c ompi_predefined_datatype_t ompi_mpi_ub =             OMPI_DATATYPE_INIT_PREDEFINED (UB, 0);
UB                175 ompi/mpi/cxx/constants.h OMPI_DECLSPEC extern const Datatype UB;
UB                336 opal/datatype/opal_datatype_internal.h #define OPAL_DATATYPE_INITIALIZER_UB(FLAGS)         OPAL_DATATYPE_INIT_BASIC_TYPE( OPAL_DATATYPE_UB, UB, FLAGS )