NASA's Information Power Grid (IPG) is an infrastructure designed to harness the power of geographically distributed computers, databases and human expertise, in order to solve large-scale realistic computational problems. This type of a metacomputing environment is necessary to present a unified virtual machine to application developers that hides the intricacies of a highly heterogeneous environment and yet maintains adequate security. In this paper, we present a novel partitioning scheme, called MinEX, that dynamically balances processor workloads while minimizing data movement and runtime communication, for applications that are executed in a parallel distributed fashion on the IPG. Experimental results show that MinEX is an effective load balancer in a distributed IPG environment.
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