Q: Where can I set the random number seed use by @RISK? What do the different values mean?
A: In the Simulation Settings dialog box you can set the random number seed. The seed value may be set to -1, 0, or an integer between 1 and 32767. If a number larger than 0 is chosen, the result from your simulation will not change each time it is run (unless you have changed your model or added some random factor out of @RISK's control). If set to 0 or -1, a random seed is chosen based on the computer's clock. The difference between 0 and –1 is the behavior when @RISK is running multiple simulations. When set to 0, the random seed value is the same for each individual simulation of the batch. In contrast, when the value is -1, a new random seed value is generated for each simulation of the batch. See the @RISK manual for more details.