Features for selecting simulation software

When choosing simulation software, features are grouped by Banks et al. into several categories. A package must be judged by how well it matches the intended use, the user's skills and the budget.

1. Input (modelling) features

• Ease of building models: graphical (drag-and-drop) interface or code.
• Whether it supports the type of simulation: discrete-event, continuous, or combined.
• Built-in constructs (queues, resources, conveyors, transporters) and the ability to write user-defined elements.
• Random-variate generation: many distributions, independent streams, and input data fitting (input analyser).
• Import of data from spreadsheets and databases, and a means to build reusable sub-models.
• Connection to other languages (Java, C++) for special logic.

2. Processing features

• Execution speed and the maximum model size.
• Debugging aids: trace, step-by-step execution, breakpoints, variable watch.
• Ability to run multiple replications and batch runs.
• Handling of time units, scheduling and event control.

3. Output features

• Standard reports: utilisation, waiting times, queue lengths.
• Statistical analysis: confidence intervals, comparison of alternatives, warm-up handling, batch means.
• Graphs and plots, export of results to spreadsheet files.
• Animation: 2D/3D display of the model during or after the run, which helps verification and communication.
• Optimisation support (search for best parameter set).

4. Environment features

• Hardware and operating-system requirements.
• Ease of learning, quality of documentation and help.
• Support for team development, model reuse and version control.

5. Vendor features

• Technical support, training, updates and consultancy.
• Reputation, user community and number of installations.
• Price and licence terms, and the availability of a demonstration or student version.

6. Other

Application-specific packages (manufacturing, healthcare, networks) shorten development time, whereas general-purpose languages give more flexibility but need more effort.