Re: fftw... ?
Re: fftw... ?
- Subject: Re: fftw... ?
- From: John Stiles <email@hidden>
- Date: Sat, 30 Oct 2004 19:12:05 -0700
Yeah, I was wrong about FFTW not supporting Altivec.
As it turns out, vDSP is still faster by about 25-30%.
On Oct 30, 2004, at 4:54 PM, Daniel Todd Currie wrote:
FFTW has AltiVec extensions as well, so I don't know that vDSP has any
real advantage there... I've been using FFTW in a Cocoa audio
analysis app and it works quite well, couldn't be easier to implement.
-- DTC
On 2004 Oct 29, at 16:14, John Stiles wrote:
I don't know much about FFTW, but I do know that Apple provides an
incredibly fast FFT library called "vDSP." It's fully
AltiVec-accelerated so it is likely that it blows FFTW out of the
water--even if their algorithms are the best, AltiVec has an inherent
four-to-one advantage.
Check out the Accelerate framework for details.
On Oct 29, 2004, at 4:07 PM, in a great fig-tree growing wrote:
Hi all,
is anyone here using fftw (www.fftw.org) with cocoa?
Akira
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| References: | |
| | >fftw... ? (From: in a great fig-tree growing <email@hidden>) |
| | >Re: fftw... ? (From: John Stiles <email@hidden>) |
| | >Re: fftw... ? (From: Daniel Todd Currie <email@hidden>) |