Re: [Discuss-gnuradio] Problems running example audio_fft.py

[Michael Dickens]

Also note that some of the examples use a FIR filter (or more than  
1), which for PPC's is -slow- since it's not optimized for PPC/ 
AltiVec.  I'm working on an Intel-Mac right now and things are nice  
and zippy due to the use of SSE!

A quick set of tests on this computer (Core Duo @ 2.16 GHz) show that  
CPU utilization for the usrp_wfm_rcv is around 33% w/ WindowServer at  
around 3.5%; the "nogui" version runs at around 6.5% and 0.3%,  
respectively.  So - a LOT less (both absolute and relative) than the  
100% @ 1.25 GHz from my Dual G4.

audio_fft uses FFTW (as do all of the built-in examples with FFT),  
and thus should be optimized for the host OS.  Likewise, WX has  
native instructions for many OSs including Linux/X11, OSX/Aqua,  
Windows, and such. - MLD