A5

If your computer has more memory available, you can allocate more memory to use for the control stack. See the manual (Chapter Memory Management) for how to do this.

Consulted programs are an order of magnitude slower and consume an order of magnitude more space than compiled programs. When I debug a large program, I usually run it in a mixed mode: those predicates (or files) which I really want to trace are consulted but all other predicates are compiled for execution.