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>
> >
>
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