> I just completed my first 512K FFT using the new SSE2 instructions!
> The 512K FFT handles exponents up to 10.3 million.
>
> Timings are as follows:
>
> 1.4GHz P4, old code: 0.126 sec.
> 1.4GHz P4, new code: 0.048 sec.
> 1.2GHz Athlon, 133MHz DDR: 0.084 sec.
>
> I have a few more optimizations up my sleeve. I think my goal
> of 0.040 seconds is achievable.
George, you are a genius.
I was getting frustrated, reading about how AMD keeps beating the P4 in
benchmark after benchmark... I knew the P4 had some decent FP performance up
it's sleeve... good to see you prove it.
Of course, the Athlon improvement is nice to see to (I'll just say I have
nothing against AMD CPU's...they're quite nice, in fact).
Aaron
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