Use these tips to optimize the usage of system memory.
Make sure the disk has sufficient space to hold the temporary directory specified at Tools > Options > General > Directories > Working Directory.
Optimal performance is achieved by using accelerated graphics hardware that has full OpenGL 1.1 compliance.
Gain knowledge about your anticipated file sizes using the Memory overlay. Check (or uncheck) the Memory box in the Display Manager.
If memory is low:
close all other applications.
remove unnecessary objects from the Model Manager.
consider disabling the Undo/Redo function (which maintains two versions of every object in memory). Click Tools > Options > General > Memory, and check the Disable Undo box.
Save your work often.
Add memory to the computer.
When working in the Polygon Phase, save the file to disk before each function rather than keeping the work in memory. Click Tools > Options > General > Memory, and check the Save State to Disk box. This means that Cancel will not disregard any current work in the dialog; to restore a model if necessary, you will need to open the file that was saved to disk.
Consider exchanging some performance in selection for more memory performance in Polygon Phase. To do this, disable the Fast Picking option. Click Tools > Options > Advanced > Large Data, and check the Disable Fast Picking box.
Choose a Memory Usage Limit. If computations reach this limit, the application modifies the way the computations are made (to Large Data Mode) so that available memory is optimized. Click Tools > Options > Advanced > Large Data. Enter a value in the Memory Usage Limit (MB) box. This value should not exceed the value reported for Memory in the Memory overlay
Use advanced, memory-saving features of wrapping and decimation.
Consider switching from Windows 2000 to Windows XP which may be more memory efficient.