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Re: realtime polyphony

Date1999-05-20 12:13
FromPaul Winkler
SubjectRe: realtime polyphony
Paul Barton-Davis wrote:
> 
> >The score for a 333MHz P-II:
> >
> >   Original benchmark:        49 oscillators
> >   With float wavetable:     104 oscillators
> >   And integer phase accum:  565 oscillators
> 
> Yowsa! On a 450Mhz P-II, with -O3 -funroll-loops: 798 oscillators (daddy-oh!)

Interesting. For the most part, I've been impressed that my cheapo
Celeron-333 performs pretty close to a PII, but I'm not finding that
with your last version of the code...

Original: about 40
With floats & integer phase accum.: about 110

compiled with egcs -O3 -funroll-all-loops -m486 -ffast-math

Any idea why it's so far behind? (110 vs. 565 at same mhz!)
I know the cache memory is much smaller. Could that account for it?