13 #need MPI_Error_class, MPI_Comm_remote_size, MPI_Graph_map
15 #need MPI_Topo_test, MPI_Cart_create
17 #need MPI_Cart_create, MPI_Cart_get, MPI_Comm_remote_size, MPI_Dims_create ...
22 #distgraph1 4 mpiversion=2.2
23 #dgraph_unwgt 4 mpiversion=2.2
24 #neighb_coll 4 mpiversion=3.0