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Re: Very Fast: Directly Coded Lexical Analyzer
Kevin Handy writes:
> Diego Novillo wrote:
> > We are *always* interested in making GCC faster. All you need now is a
> > copyright assignment, the willingness to do the work (or find someone to
> > do it for you) and the time to implement it.
> >
> > 200% speed gains are nice, especially if they can be replicated outside
> > the lab.
> >
>
> What does a 200% speedup mean?
>
> If a program runs in 10 seconds, then a 200% speedup would
> mean it runs (10 * 200/100) 20 seconds faster, thus it runs in
> -10 seconds. Must be nice having the results before you start
> the program.
No. Speed is always measured in reciprocal units of time: s^-1.
A program that runs in 10 seconds has a speed of 0.1 s^-1. Thus, 200%
is (0.1 * 200/100) s^-1 faster, giving a speed of 0.3 s^-1.
Have I been trolled? :-)
Andrew.