Home / Monte Carlo / Analyzing the Model / Tolerance Allocation / Options
Tolerance Allocation Options¶
Every control in the Tolerance Allocation Options window. Nothing on this screen is saved to the model: the settings apply to this run only.
Sampling method¶
Monte Carlo or Sobol. It comes first in the window because it decides which simulation counts are offered below it, so the field that changes another field sits above the field it changes.
Number of simulations for each level¶
How many trials each of the seven levels runs. The hint states the multiplier:
Every swept input costs seven levels of this many simulations.
The counts offered follow the sampling method above, the same way the Run Model lists do.
The three percentages¶
Each is applied as plus and minus, so every swept input is run at seven levels. They must all differ from each other and go from smallest to largest, each above 0 and below 100.
| Field | Rule | Default |
|---|---|---|
| Smallest percentage | above 0 and below 100 | 10 |
| Middle percentage | above the smallest and below the largest | 25 |
| Largest percentage | above the middle one and below 100 | 50 |
The three must be distinct and in ascending order. With the defaults, each swept input runs at minus 50, minus 25, minus 10, unchanged, plus 10, plus 25 and plus 50 percent of its spread.
Random seed¶
Zero for a clock-initialized seed, or a whole number for a run you can reproduce.
The buttons¶
OK starts the sweep and Cancel closes without running. The progress display that follows can be cancelled too.