Date Added: Dec 2010
The load distribution in a grid may vary leading to the bottlenecks and overloaded sites. The authors describe a hierarchical dynamic load balancing protocol for Grids. The Grid consists of clusters and each cluster is represented by a coordinator. Each coordinator first attempts to balance the load in its cluster and if this fails, communicates with the other coordinators to perform transfer or reception of load. This process is repeated periodically. They analyze the correctness, performance and scalability of the proposed protocol and show from the simulation results that the algorithm balances the load by decreasing the number of high loaded nodes in a grid environment.