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Re: GNU Radio on Raspberry Pi 4?

From: address@hidden
Subject: Re: GNU Radio on Raspberry Pi 4?
Date: Thu, 17 Dec 2020 09:34:11 +0000

The benchmark on volk/64 bit kernel v.s 32 bit Raspbian is at 
last page. I get 3 to 7-fold improvement by volk_config on a dedicated
toolchain for 64-bit CPU.


JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe, 25000 Besancon, 

December 17, 2020 10:28 AM, "Kristoff" <kristoff@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

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