Run monitor
Whenever you invoke a model run, the Run Monitor window will be displayed automatically.
The Run Monitor window above shows two scenarios with Multiprocessing disabled. As you can see, the model runs for scenarios 1 and 2 are complete and as a result, the Run Log links are enabled.
Canceling runs
You can cancel the run for an individual scenario by clicking the scenario's cancel icon 
(the red square Cancel button in that scenario's row). You can also cancel all current scenario runs by clicking the Cancel button in the column header cell (to the right of the Status column header).
Note
Depending on the type of the model, it may take several seconds or even minutes to cancel a scenario, especially when multiprocessing is disabled.
Multiprocessing
When Multiprocessing is enabled, the Run Monitor has a different appearance.
The window above shows the Run Monitor with two scenarios running and multiprocessing enabled.