Hello. I try to calculate brandes_betweenness_centrality. #include #include #include #include #include #include #include #include #include #include #include #include #include #include <iostream> #include <algorithm> #include using namespace boost; using namespace graph; using namespace distributed; namespace mpi = boost::mpi; typedef boost::adjacency_list, undirectedS> Graph; typedef boost::unique_rmat_iterator RMATGen; struct no_self_loops { no_self_loops() {} bool operator()(const std::pair& e) { return e.first != e.second; } }; int main(int argc, char* argv[]) { boost::mpi::environment env(argc, argv); boost::minstd_rand gen; unsigned int SCALE = atoi(argv[1]); unsigned int EDGE_FACTOR = atoi(argv[2]); unsigned int N = pow(2, SCALE); unsigned int E = EDGE_FACTOR * N; Graph g( boost::make_filter_iterator ( RMATGen(gen, N, E, 0.45, 0.15, 0.15, 0.25), RMATGen()), boost::make_filter_iterator(RMATGen(), RMATGen()), N); typedef boost::property_map::type LocalMap; boost::parallel::distributed_property_map centrality_map; //brandes_betweenness_centrality(g, centrality_map); } What should be here "|||||" ? I see http://www.boost.org/doc/libs/1_55_0/libs/graph_parallel/doc/html/distribute... template Key: The key_type of the distributed property map, which must model the Global Descriptor concept But don`t understand, is not work - typedef property_traits<LocalMap>::key_type key_type; Can you provide example?