1. A computer system, comprising: plural computer nodes, each node: determining a system topography; determining an optimum nodal membership based on the topography, the determining of an optimum nodal membership at each of the plural nodes converging with the determining of an optimum nodal membership on each of the other nodes of the plural nodes in the computer system with each of the plural nodes arriving at the same optimum nodal membership without having to transmit optimization solutions to the other nodes of the plural nodes, the optimum nodal membership that is arrived at by the plural nodes without having to transmit optimization solutions to the other nodes being used by all nodes in the system.