Can't stress this enough. Running a 32 bit Linux on a RPi 4 would be like running Windows 98 on a modern PC and expecting top performance from the CPU. You're not making use of the CPU you have, you're only making use of a legacy mode that it still supports.
Best regards, Marcus On 17.12.20 10:53, Albin Stigö wrote: > 64bit mode is most likely better because in addition to being 64bit it > enables additional cpu features (certain new instructions and more SIMD > NEON registers) > > On Thu, Dec 17, 2020, 10:36 jean-michel.fri...@femto-st.fr > <mailto:jean-michel.fri...@femto-st.fr> <jean-michel.fri...@femto-st.fr > <mailto:jean-michel.fri...@femto-st.fr>> wrote: > > 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 > <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 > <mailto: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 <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 <http://www.kb6nu.com> >
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