Towards Hybrid Grid Infrastructure for Large Simulations

The last decade has witnessed an explosion of interest in technology of large simulation with the rapid growth of both the complexity and the scale of problem domains. A variety of techniques have been developed for fostering large simulations over the Internet. Along this direction, existing work normally only suit for coarse-grained models. In this paper, we present a hybrid grid infrastructure which applies to both coarse-grained and fine-grained models. A gateway approach has been proposed to present simulation models of an individual administrative domain for fine-grained problems, and it also bridges simulation models operating in multiple administrative domains to form large simulations for studying problems of different grains. A prototype infrastructure has been realized with the support of federated simulation technology.