Computer modeling is one of the approaches for investigation of structures and processes. The main component in the model study is the generation of the input flow, which forms the workload of the system. A random number generator is usually used to model the incoming program units. In this regards, the purpose of the article is to present developed software tools that form a model environment for generating stochastic flow when presenting workload of computer system. The software realization is made by using the tools of the program environment TryAPL2 which has a programming language APL2 for parallel processing. Initial analytical description is made based on preliminary discussion and formulation of the problem. The organization of the analytical modelling is based on presentation of program modules for generating random numerical sequences with the probability distributions most commonly used in computer systems. The experimental part is connected to determine program model of workload based on an analytical approximation and its implementation in two cases is presented.

Topics
Computer systems, Programming languages, Computer simulation, Approximation methods, Probability theory, Optical computing, Stochastic processes
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