Verification of Simulation Models | BSc.CSIT | Simulation and Modeling | 5th Sem

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verification of simulation modelVerification of Simulation Models,
Simulation and Modeling Reference Notes
Fifth Semester | Third year
BSc.CSIT | Tribhuvan University (TU)

Verification of Simulation Models
The purpose of model verification is to assure that the conceptual model is reflected accurately in the operational model. The conceptual model, quite often involves some degree of abstraction about system operations, or some amount of simplification of actual operations.

Many common-sense suggestions can be given for use in the verification process and they are as follows:-

  1. Have the operational model checked by someone other than its developer.
  2. Make a flow diagram which includes each logically possible action a system can take when an event occurs, and follow the model logic for each action for each event type.
  3. Closely examine the model output for reasonableness under a variety of settings of input parameters.
  4. Have the computerized representation print the input parameters at the end of the simulation to be sure that these parameter values have not been changed inadvertently.
  5. Make the operation model as self-documenting as possible.
  6. If the operation model is animated, verify that what is seen in the animation imitates the actual system.
  7. The interactive run controller (IRC) or debugger is an essential component of successful simulation model building. Even the best of simulation analysts makes mistakes or commits logical errors when building a model. The IRC assists in finding and correcting those errors in the following ways:
    • The simulation can be monitored as it progresses.
    • Attention can be focused on a particular entity, line of code, or procedure.
    • Values of selected model components can be observed. When the simulation has paused, the current value or status of variables, attributes, queues, resources, counters, and so on can be observed.
    • The simulation can be temporarily suspended, or paused, not only to view information but also to reassign values or redirect entities
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