On Mar 31, 2004, at 3:35 PM, Tim Blechmann wrote:
you won't have to use SIMD optimization for pd, to get the full performance out of the fft objects, unless fftw uses them. on the other hand i added some optimize flags to pd's configure script ... at least p4 will get the best optimization i know of... but even without all the SIMD optimizations fftw uses a faster algorithm to compute the fft, and most of the performance will come from that, so it's not that a big difference if you use SIMD or not...
I was thinking more about Altivec and PPC where the gains will be huge. I had thoughts of using Apple's vDSP lib because it's FFT produces some ridiculous throughput (10+GFLOPS on a G5), but fftw gets about 2/3 the performance and is cross-platform which is a plus.
I'll try to check it out soon and see what difference it makes.
cgc
cheers...
Tim mailto:TimBlechmann@gmx.de ICQ: 96771783