Estimating the effectiveness of a multiple-access computer system by analytical modelling and simulation

Abstract

The results of experiments with simulation and analytical models of CPU, part of which are given in Table 1, justify the following conclusions. 1. The simulation model is sufficiently adequate to the modelled system fragment that using its results as a reference we can rely on the output data of the analytical model. 2. The proposed analytical model is oriented toward a typical operating mode of a widespread class of computer systems. Its results, over a wide range of initial parameters, correspond to the results of the simulation and can be used for orientational estimates of the expected effectiveness of a system in the initial stage of development. 3. The applied method, based on the parallel investigation of simulation and analytical models, allows us to compare homogeneous results, obtained in different ways. Such an approach may be useful in practical design of computer systems, since it gives the necessary confidence in a priori estimates, characterizing the correctness of important design decisions.