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Re: [Discuss-gnuradio] New OpenGL-based FFT, Waterfall, and Scope displa

From: masond
Subject: Re: [Discuss-gnuradio] New OpenGL-based FFT, Waterfall, and Scope displays in trunk
Date: Thu, 14 Aug 2008 18:10:56 -0500
User-agent: Internet Messaging Program (IMP) H3 (4.1.3)

Quoting Johnathan Corgan <address@hidden>:

We are looking for testers, to measure the difference in performance
between the non-GL and GL versions, and in particular, the performance
of the GL versions when using a non-accelerated host-based GL
implementation like Mesa (without DRI).

In particular, the waterfall implementation is a vast improvement over
the existing one.  Try usrp_fft.py -W to view.

Thus far it's a great improvement in apparent response time and update speed. It "feels" faster. (Let me know how you want this quantified and I'll certainly try to do that.) One thing I've noticed, though it may just be this machine: If I resize usrp_fft.py too much, the GUI stops responding to user input, though the data display keeps running. (This is using rev 9293, on Ubuntu Gutsy.) usrp_oscope.py is apparently immune.

That said, it's an amazing improvement on the current scope/spectrum analyzer.

Thanks, Josh!

Indeed, thanks a ton, Josh!


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