How do I make my programs run faster?

## 3.8 How do I make my programs run faster?

By default, ECLiPSe compiles programs as traceable, which means that they can be traced using the built-in debugger. To obtain maximum efficiency, the directive nodbgcomp/0 should be used, which will set some flags to produce a more efficient and shorter code:

>     [eclipse 2]: nodbgcomp.

>     yes.
>     [eclipse 3]: [user].
>      father(abraham, isaac).
>      father(isaac, jacob).
>      father(jacob, joseph).
>      ancestor(X, Y) :- father(X, Y).
>      ancestor(X, Y) :- ancestor(X, Z), ancestor(Z, Y).
>       user       compiled optimized 396 bytes in 0.02 seconds

>     yes.
>     [eclipse 4]:

Section 6.9 contains more detailed discussion on other techniques which can be used to optimise your programs.