Using peer-to-peer method to build global computing overlay network

We describe a peer-to-peer self-organizing overlay network for our global computing system. The preliminary simulation results show that the network has some small-world characteristics such as higher clustering coefficient and short path length, which leads to an efficient heuristic task scheduling algorithm on which any volunteer peer with limited knowledge about its neighbors can dispatch its excrescent computation tasks to the more powerful nodes globally, in a way contrary to the current global computing system in which a global broker is responsible for the task scheduling. We argue that our approach is a start point to eliminate the broker component which makes these systems unscalable.