Using HLA and Grid for Distributed Multiscale Simulations

Combining simulations of different scale in one application is non-trivial issue. This paper proposes solution that supports complex time interactions that can appear between elements of such applications. We show that High Level Architecture, especially its time management service can be efficiently used to distribute and communicate multiscale components. Grid HLA Management System (which was presented in our previous work [10]) is used to run HLA-based distributed simulation system on the Grid. The example application is build from simulation modules taken from Multiscale Multiphysics Scientific Environment (MUSE)[8], which is sequential simulation system designed for calculating behaviour of dense stellar systems like globular clusters and galactic nuclei.