Dimension-Exchange-Based Load Balancing on Injured Hypercubes

We study a global load balancing scheme on hypercubes with faulty links based on the dimension exchange scheme, where each node exchanges workloads with its neighbors along selected dimensions in such a way that their loads become equal. An algorithm that can tolerate n-1 faulty links is first presented and it can be extended to connected hypercubes with up to 2n - 3 faulty links. Comparisons between the proposed scheme with the conventional dimension-exchange-based scheme are also presented. Simulation results show that very little overhead is introduced in our scheme.