The benchmark on volk/64 bit kernel v.s 32 bit Raspbian is at https://pubs.gnuradio.org/index.php/grcon/article/view/73/55 last page. I get 3 to 7-fold improvement by volk_config on a dedicated toolchain for 64-bit CPU.
JM -- JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000 Besancon, France December 17, 2020 10:28 AM, "Kristoff" <krist...@skypro.be> wrote: > HI all, > > I also have a RPi4 (*). > Some follow-up question. > > What OS would be the best for this? > Would running 64 bit make a difference? > > I don't know to what degree this is related, but I did a test running > WebGL (**) on that pi, and I got about 1/3 of the frames per second on > my RPi4 compared to my laptop (which only has a UHD Graphics 630 Mobile, > so not the best or latest neither) > Is the GPU in the Pi4 good enough to run many GUI elements in GNU Radio > at the same time? > > Kr. > > (*) RPi4B 8 GB, 120 SSD > > (*) https://webglsamples.org > > On 16/12/2020 11:10 p.m., Dan Romanchik KB6NU wrote: > >> Has anyone successfully run GNU Radio on a Pi 4? I recently purchased >> an RTL-SDR dongle and thought it would be fun to experiment a little >> with GNU Radio and learn something about SDR. >> >> A couple of days ago, I fired up GNU Radio, and after having some >> trouble figuring out how to get the audio sink to talk to the Pi, I >> downloaded VE6EY's FM receiver flow graph. The flow graph runs, but >> the Pi 4 just doesn't seem to have enough horsepower to run it in real >> time. The audio is slow and distorted. >> >> Thinking that it might be the WX widgets slowing down the program, I >> first deleted the FFT display widgets, then converted the WX slider >> controls to QT range controls. Neither had any effect on how well the >> flow graph ran. >> >> GQRX and CubicSDDR seem to work just fine. At least with both of them, >> I'm able to receive FM broadcast and NOAA weather station. But, maybe >> the PI4 just doesn't have enough horsepower to run GNU Radio? If so, >> that's kind of disappointing. >> >> 73! <—ham radio lingo for “best regards" >> >> *Dan KB6NU* >> CW Geek, Ham Radio Instructor >> Author of the "No Nonsense" amateur radio license study guides >> Read my ham radio blog at http://www.kb6nu.com