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FFTs Using AltiVec on Linux and Mac OS X

Posted by pudge on from the mmmm-fourier dept.

GregAllen writes "After searching for a good open-source AltiVec implementation of the Fast Fourier Transform (FFT), I have put together the AltiVec FFT page. It has all of the source, some benchmarks, and runs on Mac OS X or LinuxPPC. I even compared it to the venerable (but scalar) FFTW."

2 of 33 comments (clear)

  1. the obligatory... by ndevice · · Score: 2, Insightful

    even faster mp3 / dvd / video variant - encoding/decoding!

    Won't the *aa be pleased.

    'Consumers shouldn't be allowed to have machines that can encode media files quickly since we're the only ones who are allowed to produce this stuff...'

    'and no, why would consumers need machines that can decode a media file faster than the realtime playback speed? if you're playing something back, you won't need to do anything else...'

  2. Re:Linux is faster than macosx by Farley+Mullet · · Score: 2, Insightful

    This is probably because OS/X is heavily altivec-optimized, and g3's don't have altivec. So basically what you're saying is "a g3 optimized operating system is faster on my g3 than a g4 optimized operating system."

    Shocking, eh?