A New Load Balanced Routing Algorithm for Torus Networks

Originated from gas diffusion phenomenon, a new load balanced routing algorithm named Gas Diffusion Based Load balanced Routing (GDLR) is proposed for torus networks. GDLR estimates global congestion in the network by the number of potential deadlocked packets. Based on this information, the probabilities of all possible ports a packet may use are accordingly determined. Subsequently, packets are sent out with the stochastic policy, which leads to data load spreading with consequent automatic load balancing. Finally, simulations have been carried out on 2D torus networks by using OPNET software. The results obtained show that GDLR achieves a better performance than other popular algorithms such as Dimension Order, Duato, and GAL.

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