Re: GNU Radio on Raspberry Pi 4?

[Glen Langston]

Concerning Full Raspberry Pi OS software installed on a single Raspberry Pi 
image,
we’re encouraging high schools to use this installation document.
https://docs.google.com/document/d/1hfS7cRx3emlZz0sTs583zN8o-35nKtIej6BYMKCJLXY/edit?usp=sharing

The document includes the links to the OS and hardware to purchase.

Unfortunately this is a 3.7.13.4 Gnuradio release, as we’ve not had the strength
to get the SDRPlay software support working for newer gnuradio Releases.

Best regards, 

Glen

> On Dec 17, 2020, at 12:03 PM, Kyeong Su Shin <ksshin@postech.ac.kr> wrote:
> 
> To whom it may concern:
> 
> Just a tip: If you are building GNU Radio from the source, dependencies and 
> build procedures for Raspberry Pi is available at the GNU Radio Wiki. It 
> assumes that you are doing on-board compile.
> 
> See: https://wiki.gnuradio.org/index.php/InstallingGR#From_Source
> 
> 
> Regards,
> Kyeong Su Shin
> 보낸 사람: Albin Stigö <albin.stigo@gmail.com> 대신 Discuss-gnuradio 
> <discuss-gnuradio-bounces+ksshin=postech.ac.kr@gnu.org>
> 보낸 날짜: 2020년 12월 18일 금요일 오전 1:13
> 받는 사람: Kristoff <kristoff@skypro.be>; GNURadio Discussion List 
> <discuss-gnuradio@gnu.org>
> 제목: Re: GNU Radio on Raspberry Pi 4?
>  
> There's no special configuration. Just install dependencies and build from 
> source. Put root on SSD or it will be very slow. Ubuntu 65bit is fine. In 
> general GNURadio is hell to build and get dependencies right, but in the end 
> it works well.
> 
> --Albin
> 
> On Thu, Dec 17, 2020, 16:37 Kristoff <kristoff@skypro.be> wrote:
> Albin,
> 
> 
> Can you share your configuration for this? Do you need to set up 
> something special?
> Can you do this on standard ubuntu 64 bit (20.04LTS or 20.10) on a pi4b 
> or do you need another distro for this?
> 
> 
> I read somewhere opengl on the pi4 has not been released yes as it has 
> the pi4 has a more recent GPU.
> Or am I completely wrong?
> 
> 
> 73
> kristoff - ON1ARF
> 
> 
> On 17/12/2020 1:22 p.m., Albin Stigö wrote:
> > I suspect a lot of the graphics could run perfectly fine if they took 
> > advantage of the gpu better. A lot of the current rendering in 
> > GNURadio (and GQRX) is very cpu bound.
> >
> > I had a spectrum and waterfall running easily at 60fps on a pi3 by 
> > using opengl properly. Using vulkan on pi4 the sky is the limit.
> >
> > --Albin
> >
> > On Thu, Dec 17, 2020, 13:18 Marcus Müller <mueller@kit.edu 
> > <mailto:mueller@kit.edu>> wrote:
> >
> >     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.friedt@femto-st.fr
> >     <mailto:jean-michel.friedt@femto-st.fr>
> >     > <mailto:jean-michel.friedt@femto-st.fr
> >     <mailto:jean-michel.friedt@femto-st.fr>>
> >     <jean-michel.friedt@femto-st.fr
> >     <mailto:jean-michel.friedt@femto-st.fr>
> >     > <mailto:jean-michel.friedt@femto-st.fr
> >     <mailto:jean-michel.friedt@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" <kristoff@skypro.be
> >     <mailto:kristoff@skypro.be>
> >     >     <mailto:kristoff@skypro.be <mailto: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 <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>
> >     >
> >