The Trials tab of the Run Preferences dialog sets preferences that stop a simulation: number of trials, calculation errors, and precision control. For general instructions, see Setting Run Preferences.
The current simulation must be reset before precision control settings will take effect.
The Trials tab of the Run Preferences dialog has these settings:
Number Of Trials To Run — Defines the maximum number of trials that Crystal Ball runs before it stops the simulation. If you select either of the checkboxes on this dialog, Crystal Ball only uses the maximum number of trials if forecast results do not meet the other stop criteria first.
Stop On Calculation Errors — When selected, stops the simulation when a mathematical error (such as division by zero) occurs in any forecast cell. If a calculation error occurs, to help you find the error, Crystal Ball does not restore the cell values. If no calculation errors occur, the simulation continues until it reaches the Number Of Trials To Run or (if set) when the specified precision is reached.
Stop When Precision Control Limits Are Reached — When selected stops the simulation when certain statistics reach a specified level of precision. You select the statistics and define the precision that triggers this option in each Define Forecast dialog. For instructions, see Precision Tab. Any forecasts set to use precision control must all reach their specified precision within the confidence level to stop the simulation. If all the forecasts set to use precision control don’t meet the specified precision, the simulation stops when it reaches the Number Of Trials To Run. By default, precision control is on.
Confidence Level — Sets the precision level (confidence level) that indicates when to stop a simulation.