Developing a Performance-Analysis Model for a Star-Topology Data Grid from Multi-user Perspective

Data grids often integrate many geographically dispersed storage and computational resources to provide users with an environment in which scientists and scientific researchers can execute their large-scale applications and store their data collected from other databases or produced by their experiments. To efficiently transfer a huge volume of data shared by users among the clusters or nodes in data grids, several co-allocation schemes have been proposed to shorten the data delivery. In this paper, we develop a performance-analysis model, named the Response Time Evaluation Model (RTEM for short), over a topology reduced from a tree to a star to evaluate data grid co-allocation schemes from multi-user perspective.