Advanced Options
Pit Optimiser
Pit optimisation algorithm
Select between the following optimisation algorithms:
| Algorithm | Description |
|---|---|
| Default | The recommended (default) algorithm is currently LG/LL Improved (see below). |
| LG/LL | Lerchs Grossman Lowest Label (LG/LL) |
| Since it was written for 32 bit systems, the LG/LL algorithm provides less memory and less performance, but can be used as a fall-back option or to compare results against newer algorithms. | |
| LG/LL Improved | An improved approach to the LG/LL algorithm is designed take advantage of multi-core processing and the 64-bit architecture of modern computers. |
| A performance improvement of around 30% is anticipated. |
Number of benches for dependencies
The number of benches that are used to generate the pit slopes will affect the accuracy of the results and the time taken to perform the optimisation. If this is set to 0, or left blank, which is the default setting, dependencies to model the specified slope angles will be generated from each block to the surface of the pit. This will produce the most accurate modelling of the pit slopes; however, it may require more memory and processing time to complete the optimisation.
You can experiment. However, as a rule of thumb, to minimise the number of dependencies generated for pit slopes within the range of 40-50 degrees, divide the largest horizontal dimension of the block by the height of the block and multiply by 8.
Example: For blocks with dimensions X=45, Y=35, Z=30 this would require a value of (45 / 30) * 8 = 12 benches
In general, increasing the number of benches will result in a more precise pit.
