NBC_Scatter_args_compare  640 ompi/mca/coll/libnbc/nbc.c   comminfo->NBC_Dict[NBC_SCATTER] = hb_tree_new((dict_cmp_func)NBC_Scatter_args_compare, NBC_SchedCache_args_delete_key_dummy, NBC_SchedCache_args_delete);
NBC_Scatter_args_compare  256 ompi/mca/coll/libnbc/nbc_internal.h int NBC_Scatter_args_compare(NBC_Scatter_args *a, NBC_Scatter_args *b, void *param);