NBC_Allreduce_args_compare  612 ompi/mca/coll/libnbc/nbc.c   comminfo->NBC_Dict[NBC_ALLREDUCE] = hb_tree_new((dict_cmp_func)NBC_Allreduce_args_compare, NBC_SchedCache_args_delete_key_dummy, NBC_SchedCache_args_delete);
NBC_Allreduce_args_compare  202 ompi/mca/coll/libnbc/nbc_internal.h int NBC_Allreduce_args_compare(NBC_Allreduce_args *a, NBC_Allreduce_args *b, void *param);