The Run toolbar appears in the lower left-hand corner of the Stella window. It gives you quick access to a lot of the commands on the Run menu. It also gives you a visual indication of the progress of a simulation, and allows you to adjust the time range used for tables and graphs.
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The items on the Run toolbar are described below.
This is available only if sensitivity has been set up for the model. Click on it so start a sequence of sensitivity runs. Progress will be displayed in the run toolbar, and graphs and tables will update periodically.
This is available only if a valid optimization has been set up for the model. Click on it so start the optimization. Progress will be displayed in the run toolbar, and graphs and tables will update periodically if it is a long optimization.
Click this button to run the simulation. Progress in the run will be displayed in the toolbar.
Click this button to pause the simulation. When a simulation is running, the Run button changes to the Pause button. When you click the Pause button, it changes back to the Play button.
Click this button to stop the simulation while it's running. If you start the simulation again, it'll start at the beginning of the simulation.
Click this button to open the Data Manager. In you are in analysis mode and have made a new run the run name will be highlighted so you can easily rename it. In edit mode the dialog will open without any highlighting.
Click this button to delete all runs and associated data, except those specifically designated by run name in tables and graphs.
Opens the Message Log. This button is only shown when there is content in the log.
The Progress bar shows the current progress of your simulation. It's also a slider you can use to move to a specific point in the simulation.
This dropdown list will appear at the end of the Run toolbar when you're in Model view and there are messages about equations (which prevent running) or units. To look at the messages, open the dropdown and select a message. You'll be taken to the associated variable on the diagram, and the properties panel will open on its equation.
The Time Indicator shows the progress of the simulation, by showing the current time value. If you move the slider on the progress bar, it will display the time corresponding to the current slider position.
During optimizations and sensitivity analysis the number of runs rather than time will be displayed here.