Comments on Retro Programming: Efficiency in Forth

: -ROT ROT ROT ;

2011-04-24T11:41:15.923-07:00

: -ROT ROT ROT ;

Optimisation, in the '97% of the time, prematu...

2011-03-31T08:39:13.309-07:00

Optimisation, in the '97% of the time, premature optimisation is the root of all evil' quote actually refers to 'micro-optimisation' which is about shaving a few processor cycles here and there.

An example of the 3% would be when your optimisation forces larger changes...for example, in a software renderer, forcing power-of-two textures, allowing the use of bitshifts rather than multiplication and division.

In support of optimization: 1) it's fun, and 2...

2011-03-15T17:50:50.539-07:00

In support of optimization: 1) it's fun, and 2) this is the core!
--from someone who has implemented a Forth kernel before (on PowerPC).

"but only about 97% of the time ;-) " G...

2011-03-15T16:04:23.960-07:00

"but only about 97% of the time ;-) "

Give examples of the 3%. If you don't finish it, then optimize, how do you know if a) you need to optimize, and b) if your "optimization" does any good.

Ruben: true, but only about 97% of the time ;-)

2011-03-13T12:41:37.459-07:00

Ruben: true, but only about 97% of the time ;-)

Premature optmisation is the root of all evil John...

2011-03-13T12:25:52.170-07:00

Premature optmisation is the root of all evil John! Finish it and then optimise!

Cheers,
Ruben