MPI supports communicators with topological information. Effectively, a topological communicator supports the "neighbors" operations API.
Currently, there are two topology models described in MPI's documentation: cartesian and graphs.
The functions to create communicators with each of these topologies are: MPI_Cart_create and MPI_Graph_create.
MPI supports communicators with topological information. Effectively, a topological communicator supports the "neighbors" operations API.
Currently, there are two topology models described in MPI's documentation: cartesian and graphs.
The functions to create communicators with each of these topologies are:
MPI_Cart_createandMPI_Graph_create.