Time scale combining of conservative parallel discrete event simulations

Very often many parameterized trials of a simulation are required. Modifying parameters of a simulation will often only modify a fraction of the work. This paper proposes time scale combining (TSC) to combine multiple independent simulation trials by sharing common events and inter-processor communication messages across distinct simulations. As a result, some of the overhead experienced in parallel computation can be amortized across these multiple simulations, reducing the total time required to execute all of the simulations. The results from an experimental evaluation on both asynchronous and synchronous parallel architectures are presented