Simulation of a distributed processing system: a case study

Article Abstract:

Many modern computer systems require a continual monitoring of their projected performance from the design phase until the system becomes operational. This means forecasting system performance with very little data available during the early design phase and continually updating the forecast as the design matures. While designing computer systems with time-critical performance constraints, the timing requirements are hard to meet if crucial decisions are not made at the design stage. Experience with the Over The Horizon-Backscatter radar data processing project is used as an example to illustrate how these decisions are made using a variety of techniques such as benchmark testing, paper-pencil analysis, and simulation. (Reprinted by permission of the publisher.)

Systems analysis, Design, Benchmarking, Real time systems, Benchmark, System Design, Simulation, Performance, Real-Time System, Distributed Processing, Case Study

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GASP-S: a GASP IV version with stiff-ODE integrator

Article Abstract:

We present a simulation language GASP-S, an extension of a well-known FORTRAN-based simulation language GASP IV. GASP IV language has been extended using an integration package for solving models of continuous and combined systems described by a set of stiff ordinary differential equations. The V Runge-Kutta-England integration procedure employed in standard GASP IV is unsuitable for problems of this nature. The integration package STIFFSOLVER-81 used in GASP-S has been developed primarily for use in the field of microbial engineering and chemical kinetics. (Reprinted by permission of the publisher.)

Mathematical models, Optimization theory, Integrated Systems, FORTRAN, FORTRAN (Programming language), Simulation Languages, Scientific Research, Mathematical Programming, Difference Equations, Equation Analysis

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