12 #need MPI_Error_class, MPI_Comm_remote_size, MPI_Graph_map
14 #need MPI_Topo_test, MPI_Cart_create
16 #need MPI_Cart_create, MPI_Cart_get, MPI_Comm_remote_size, MPI_Dims_create ...
21 #distgraph1 4 mpiversion=2.2
22 #dgraph_unwgt 4 mpiversion=2.2
23 #neighb_coll 4 mpiversion=3.0