PERFORMANCE ANALYSIS OF NETWORKS OF OPEN ZERO BUFFER MULTI SERVER QUEUES
In this paper we aim to accurately evaluate the performance of open zero buffer multi server general queueing networks. The measure of interest is the throughput, which is evaluated by mean of a well know tool, the Generalized Expansion Metthod (GEM) The GEM is a nodeby node decomposition method successfully used in the past to approximately evaluate the performance of finite queues. We compare the results provided by the GEM with those of simulation. Our experiments attest for the quality of the GEM. A wide range of testing instances was analyzed, including different basic topologies. For all cases tested, the errors were below 16% which is quite satisfactory for optimization purposes, to be carried out in the next step of this research.