Re: BokehGUI in GNU Radio 4 (GSOC)

Ziad Haithem 202201027 <[email protected]> Mon, 30 Mar 2026 13:45:05 +0200
Newsgroups gmane.comp.gnu.radio.general
Message-ID <CAN9g7ZzxqnG3z_mcYMaJ5GtSZeDVtEvvdc5euL8bKenk2j48Ew@mail.gmail.com>
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Thanks for the feedback this clears up quite a bit

3,1) Ill explicitly state that the library is undecided and try to keep
discussion on the core architecture library neutral, i'll add it as a
deliverable to be done hopefully by the the first week of gsoc, it'll
contain compiling a list of options, testing and final selection of the
library.

2) I'll incorporate more testing throughout the timeline instead of keeping
all of it to the end

ill try to expand a bit on risks/risk mitigation & prioritization in the
proposal
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On Mon, Mar 30, 2026 at 11:46=E2=80=AFAM Cyrille Morin <cyrille.morin@inria=
.fr>
wrote:

> Hi Ziad,
>
> To give you some feedback, I'll go out of order:
>
> 3) I believe deciding on the exact library to use is an important first
> step, and is part of the work to be done as it requires time to try out t=
he
> different options. So having that decision as part of the gsoc itself is =
a
> good thing. It could even be thought of as a deliverable
>
> 1) The discussion of pros and cons is good, but the exact choice might be
> dependent on the specificities of the chosen library. For instance, ImGUI
> might be easier to integrate directly into C++ blocks than Bokeh's Python
>
> 2) In general, it's good practice to test as you go. Making all the sinks
> and widgets before starting to test them might leave you with nothing
> working, or having to rewrite everything if you find systemic bugs in you=
r
> code or architecture.
>
> Expanding on the topic of risks. It could be good to think about, and
> detail where you could have some wriggle room to tackle unexpected issues
> and/or plan B, prioritization in case time runs short.
> *Cyrille MORIN*
> *Ing=C3=A9nieur SED*
> *=C3=89quipe MARACAS*
>
> [image: Logo Inria]
> Centre Inria de Lyon
>
> Laboratoire CITI
> Campus La Doua - Villeurbanne
> 6 avenue des Arts
> F-69621 Villeurbanne
>
> https://team.inria.fr/maracas/
> Le 27/03/2026 =C3=A0 18:52, Ziad Haithem 202201027 a =C3=A9crit :
>
> Sorry for the delay in my reply, things took a bit longer than i expected
>
> Thanks for the answers
>
> I went ahead and looked up some developer tutorials for GR4 and i think i
> have a good enough of an understanding now to be able to write a good
> proposal,
>
> Here is the google doc fo my proposal with the technical aspects complete
> and that's mainly what i would like to get feedback on
>
> https://docs.google.com/document/d/18-Tik6fIwv6KZVvqpIYjX_cKrxYV9c4MihXhG=
65SPKg/edit?usp=3Dsharing
>
> Specifically what i would like feedback on is the following
> 1) My main design choice on the core infrastructure and if my
> rationalization behind it is sufficient (I detail 3 approaches in my
> proposal and compare them)
> 2) I lack quite a bit of experience with QA & documentation and so those
> parts of the proposal may be a bit lackluster any feedback on that would
> definitely help
> 3) I have essentially pushed back the question of what library for
> browser plotting will be used (Bokeh, imgui, etc) to being part of the
> first week of work, as i feel i wont have enough time to do an actual goo=
d
> assessment before the proposal deadline, is that okay or do i need to
> specify the library which will be used ?
>
> Obviously any feedback on anything else is welcome, I am sure I have so
> much to learn !
>
> Since its a google doc, feedback via comments within the document would b=
e
> easier than email i think, however whatever is preferable for you is fine
>
>
> On Wed, Mar 25, 2026 at 5:34=E2=80=AFPM Cyrille Morin <cyrille.morin@inri=
a.fr>
> wrote:
>
>> Hi Ziad,
>>
>> Having a running GR 4.0 with a custom OOT is certainly a good start, wel=
l
>> done!
>>
>> I'm definitely not in the best position to give advice on GR4 code
>> philosophy as I still need to start playing with it before GSoc starts.
>> But I believe you'll find the best and most up to date info in the
>> gnuradio4 repo itself, including the readmes in the /docs folder, and al=
so
>> the 4.0.0-RC1 tag description which covers a lot of the current state
>>
>> I mention Bokeh in the project description because it's the dependency w=
e
>> use for the current (GR3) version of the remote monitoring system, so we
>> know it can cover the main use case.
>> But it is far from perfect so we are open to using an other library
>> providing that same core use case of *remote* monitoring with plots and
>> interaction with widgets, with the added bonus of not requiring anything
>> installed on the remote computer.
>> So ImGUI, with its many flavours *could* be an interesting option with
>> better performance, nice plots... as long as it shows an efficient way f=
or
>> remote operation outside of the local browser.
>>
>> I hope it helps with some of your questions,
>>
>> Best
>> *Cyrille MORIN*
>> *Ing=C3=A9nieur SED*
>> *=C3=89quipe MARACAS*
>>
>> [image: Logo Inria]
>> Centre Inria de Lyon
>>
>> Laboratoire CITI
>> Campus La Doua - Villeurbanne
>> 6 avenue des Arts
>> F-69621 Villeurbanne
>>
>> https://team.inria.fr/maracas/
>> Le 24/03/2026 =C3=A0 04:40, Ziad Haithem 202201027 a =C3=A9crit :
>>
>> Dear GNU Radio Community,
>>
>> I have decided that my gsoc proposal/project will be on the "BokehGUI in
>> GNU radio 4.0" idea
>> 1. Proof of Concept & Progress
>>
>> To get comfortable with the GR 4.0 , I=E2=80=99ve developed a small PoC =
. It uses
>> a signal generator block into a custom OOT module that publishes data to=
 a
>> socket via ZMQ. A Python script then subscribes to that socket and plots
>> the sine wave in the browser in real-time using Bokeh.
>>
>> Main goal is to just show i was able to take something generated by GR4
>> and get it displayed in the browser
>>
>>    -
>>
>>    *Repo:* [
>>    https://github.com/ZiadFahmyZewailCity/gr4.0-bokehgui/tree/gettingFam=
iliarWithDevelopment
>>    ]
>>    -
>>
>>    *Video Demo:* [Link to Video
>>    <https://drive.google.com/file/d/1-5VSE6BerbMY9ruzjn5oQxtQFzTD34lS/vi=
ew?usp=3Dsharing>
>>    ]
>>
>> I've also worked through the GR3 beginner and OOT tutorials, and spent
>> time playing with ZMQ/Bokeh to ensure I can handle plotting and the data
>> flow between processes.
>> 2. Seeking Guidance on GR 4.0
>>
>> While I=E2=80=99m thrilled I got the PoC running, this is my first time =
working
>> with a codebase of this scale. My main concern is moving from "making it
>> work" to "making it right." What are some resources that'll help me desi=
gn
>> and write code that "fits" with the design philosophy behind OOT modules
>> for GR4. I feel like this will be very important for my proposal
>> 3. Use of bokeh
>> I wrote the POC in bokeh and focused on it when experimenting because it=
s
>> what was mentioned in the project description and there are plenty of
>> resources for it. However while researching I found that in European GNU
>> Radio Days
>> <https://wiki.gnuradio.org/index.php?title=3DEuropean_GNU_Radio_Days/202=
5> in
>> the next generation remote GUI section. "Imgui"  was considered a good
>> candidate to be used for wireless plotting for GNU Radio 4.0. Has the
>> community moved away from this opinion ? is it still present ? Should I
>> write my proposal with only one library in mind or be flexible and have
>> this been decided later on in development ?
>> 4. Why This Project?
>>
>> I initially looked for something with a bit more DSP and communications
>> concepts. However this project feels important, and I decided to go with
>> something which would have an impact instead of wasting time thinking of=
 a
>> custom project to propose that had me playing with some of the concepts =
i
>> was most interested in.
>>
>> I am really looking forward to the possibility of contributing to GNU
>> Radio this summer as part of GSOC. Thank you for your time and for any
>> pointers you can provide!
>>
>> cyberspectrum is best spectrum (I think the code word is for the proposa=
l
>> only but one can never be too safe lol)
>>
>> Sincerely,
>> Ziad
>> --
>> Ziad Haithem Fahmy
>> ID:202201027
>>
>> Communications and Information Engineering Student
>>
>> Zewail City of Science, Technology and Innovation
>>
>> Ahmed Zewail Road, October Gardens, Giza 12578, Egypt
>> <https://goo.gl/maps/bbNTX7EMrbZA1Lhu7>
>>
>> www.zewailcity.edu.eg
>>
>>
>> 0120 205 7175
>>
>> Whatsapp number - 0109 479 1824
>>
>>
>>
>>

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<div dir=3D"ltr"><div dir=3D"ltr">Thanks for the feedback this clears up qu=
ite a bit<div><br></div><div>3,1) Ill explicitly=C2=A0state that the librar=
y=C2=A0is undecided and try to keep discussion on the core architecture=C2=
=A0library neutral, i&#39;ll add it as a deliverable to be done hopefully b=
y the the first week of gsoc, it&#39;ll contain compiling a list of options=
, testing and final selection=C2=A0of the library.</div><div><br></div><div=
>2) I&#39;ll incorporate=C2=A0more testing throughout the timeline instead =
of keeping all of it to the end</div><div><br></div><div>ill try to expand =
a bit on risks/risk mitigation &amp; prioritization in the proposal</div></=
div><div id=3D"m_8110172842132397564DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><=
table style=3D"border-top:1px solid #d3d4de"><tbody><tr><td style=3D"width:=
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><td style=3D"width:470px;padding-top:12px;color:#41424e;font-size:13px;fon=
t-family:Arial,Helvetica,sans-serif;line-height:18px">Virus-free.<a href=3D=
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"#m_8110172842132397564_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width=3D"1" h=
eight=3D"1"></a></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr"=
 class=3D"gmail_attr">On Mon, Mar 30, 2026 at 11:46=E2=80=AFAM Cyrille Mori=
n &lt;<a href=3D"mailto:[email protected]" target=3D"_blank">cyrille.m=
[email protected]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex"><u></u>

 =20
   =20
 =20
  <div>
    <p>Hi Ziad,</p>
    <p>To give you some feedback, I&#39;ll go out of order:</p>
    <p>3) I believe deciding on the exact library to use is an important
      first step, and is part of the work to be done as it requires time
      to try out the different options. So having that decision as part
      of the gsoc itself is a good thing. It could even be thought of as
      a deliverable</p>
    <p>1) The discussion of pros and cons is good, but the exact choice
      might be dependent on the specificities of the chosen library. For
      instance, ImGUI might be easier to integrate directly into C++
      blocks than Bokeh&#39;s Python</p>
    <p>2) In general, it&#39;s good practice to test as you go. Making all
      the sinks and widgets before starting to test them might leave you
      with nothing working, or having to rewrite everything if you find
      systemic bugs in your code or architecture.</p>
    <p>Expanding on the topic of risks. It could be good to think about,
      and detail where you could have some wriggle room to tackle
      unexpected issues and/or plan B, prioritization in case time runs
      short.</p>
    <div>
     =20
     =20
      <strong>Cyrille MORIN</strong><br>
      <div> <em>Ing=C3=A9nieur SED</em><br>
        <em>=C3=89quipe MARACAS</em></div>
      <div><br>
        <img src=3D"cid:ii_19d3e81708cf8cdc8ae1" alt=3D"Logo Inria" width=
=3D"200" height=3D"59"><br>
        <span style=3D"color:rgb(255,0,0)">Centre Inria de Lyon</span></div=
>
      <div><br>
        Laboratoire CITI<br>
        Campus La Doua - Villeurbanne<br>
        6 avenue des Arts<br>
        F-69621 Villeurbanne</div>
      <div><br>
      </div>
      <div> <a href=3D"https://team.inria.fr/maracas/" target=3D"_blank">ht=
tps://team.inria.fr/maracas/</a><br>
      </div>
    </div>
    <div>Le 27/03/2026 =C3=A0 18:52, Ziad Haithem
      202201027 a =C3=A9crit=C2=A0:<br>
    </div>
    <blockquote type=3D"cite">
     =20
      <div dir=3D"ltr">
        <div>Sorry for the delay in my reply, things took a bit longer
          than i expected</div>
        <div><br>
        </div>
        Thanks for the answers=C2=A0
        <div><br>
        </div>
        <div>I went ahead and looked up some developer tutorials for GR4
          and i think i have a good enough of an understanding now to be
          able to write a good proposal,</div>
        <div><br>
        </div>
        <div>Here is the google doc fo my proposal with the technical
          aspects complete and that&#39;s mainly what i would like to get
          feedback on</div>
        <div><a href=3D"https://docs.google.com/document/d/18-Tik6fIwv6KZVv=
qpIYjX_cKrxYV9c4MihXhG65SPKg/edit?usp=3Dsharing" target=3D"_blank">https://=
docs.google.com/document/d/18-Tik6fIwv6KZVvqpIYjX_cKrxYV9c4MihXhG65SPKg/edi=
t?usp=3Dsharing</a></div>
        <div><br>
        </div>
        <div>Specifically what i would like feedback on is the following</d=
iv>
        <div>1) My main design choice on the core infrastructure and if
          my rationalization behind it is sufficient (I detail 3
          approaches in my proposal and compare them)</div>
        <div>2) I lack quite a bit of experience with QA &amp;
          documentation=C2=A0and so those parts=C2=A0of the proposal may be=
 a bit
          lackluster any feedback on that would definitely help=C2=A0</div>
        <div>3) I have essentially pushed back the question of what
          library for browser=C2=A0plotting will be used (Bokeh, imgui, etc=
)
          to being part of the first week of work, as i feel i wont have
          enough time to do an actual good assessment before the
          proposal deadline, is that okay or do i need to specify the
          library which will be used ?</div>
        <div><br>
        </div>
        <div>Obviously any feedback on anything else is welcome, I am
          sure I have so much to learn !=C2=A0</div>
        <div><br>
        </div>
        <div>Since its a google doc, feedback via comments within the
          document would be easier than email i think, however whatever
          is preferable=C2=A0for you is fine</div>
        <div><br>
        </div>
      </div>
      <br>
      <div class=3D"gmail_quote">
        <div dir=3D"ltr" class=3D"gmail_attr">On Wed, Mar 25, 2026 at
          5:34=E2=80=AFPM Cyrille Morin &lt;<a href=3D"mailto:cyrille.morin=
@inria.fr" target=3D"_blank">[email protected]</a>&gt;
          wrote:<br>
        </div>
        <blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div>
            <p>Hi Ziad,</p>
            <p>Having a running GR 4.0 with a custom OOT is certainly a
              good start, well done!<br>
              <br>
              I&#39;m definitely not in the best position to give advice on
              GR4 code philosophy as I still need to start playing with
              it before GSoc starts.<br>
              But I believe you&#39;ll find the best and most up to date
              info in the gnuradio4 repo itself, including the readmes
              in the /docs folder, and also the 4.0.0-RC1 tag
              description which covers a lot of the current state</p>
            <p>I mention Bokeh in the project description because it&#39;s
              the dependency we use for the current (GR3) version of the
              remote monitoring system, so we know it can cover the main
              use case.<br>
              But it is far from perfect so we are open to using an
              other library providing that same core use case of <i>remote<=
/i>
              monitoring with plots and interaction with widgets, with
              the added bonus of not requiring anything installed on the
              remote computer.<br>
              So ImGUI, with its many flavours <i>could</i> be an
              interesting option with better performance, nice plots...
              as long as it shows an efficient way for remote operation
              outside of the local browser.<br>
              <br>
              I hope it helps with some of your questions,</p>
            <p>Best</p>
            <div> <strong>Cyrille MORIN</strong><br>
              <div> <em>Ing=C3=A9nieur SED</em><br>
                <em>=C3=89quipe MARACAS</em></div>
              <div><br>
                <img src=3D"cid:ii_19d3e81708cf8cdc8ae1" alt=3D"Logo Inria"=
 width=3D"200" height=3D"59"><br>
                <span style=3D"color:rgb(255,0,0)">Centre Inria de Lyon</sp=
an></div>
              <div><br>
                Laboratoire CITI<br>
                Campus La Doua - Villeurbanne<br>
                6 avenue des Arts<br>
                F-69621 Villeurbanne</div>
              <div><br>
              </div>
              <div> <a href=3D"https://team.inria.fr/maracas/" target=3D"_b=
lank">https://team.inria.fr/maracas/</a><br>
              </div>
            </div>
            <div>Le 24/03/2026 =C3=A0 04:40, Ziad Haithem 202201027 a =C3=
=A9crit=C2=A0:<br>
            </div>
            <blockquote type=3D"cite">
              <div dir=3D"ltr">
                <div dir=3D"ltr">
                  <p>Dear GNU Radio Community,</p>
                  <p>I have=C2=A0decided that my gsoc proposal/project will
                    be on the &quot;BokehGUI in GNU radio 4.0&quot; idea</p=
>
                  <h3>1. Proof of Concept &amp; Progress</h3>
                  <p>To get comfortable with the GR 4.0 , I=E2=80=99ve deve=
loped
                    a small PoC=C2=A0. It uses a signal generator block int=
o
                    a custom OOT module that publishes data to a socket
                    via ZMQ. A Python script then subscribes to that
                    socket and plots the sine wave in the browser in
                    real-time using Bokeh.</p>
                  <p>Main goal is to just show i was able to take
                    something generated by GR4 and get it displayed in
                    the browser=C2=A0</p>
                  <ul>
                    <li>
                      <p><b>Repo:</b> [<a href=3D"https://github.com/ZiadFa=
hmyZewailCity/gr4.0-bokehgui/tree/gettingFamiliarWithDevelopment" target=3D=
"_blank">https://github.com/ZiadFahmyZewailCity/gr4.0-bokehgui/tree/getting=
FamiliarWithDevelopment</a>]</p>
                    </li>
                    <li>
                      <p><b>Video Demo:</b>=C2=A0[<a href=3D"https://drive.=
google.com/file/d/1-5VSE6BerbMY9ruzjn5oQxtQFzTD34lS/view?usp=3Dsharing" tar=
get=3D"_blank">Link to
                          Video</a>]</p>
                    </li>
                  </ul>
                  <p>I&#39;ve also worked through the GR3 beginner and OOT
                    tutorials, and spent time playing with ZMQ/Bokeh to
                    ensure I can handle plotting and the data flow
                    between processes.</p>
                  <h3>2. Seeking Guidance on GR 4.0=C2=A0</h3>
                  <p>While I=E2=80=99m thrilled I got the PoC running, this=
 is
                    my first time working with a codebase of this scale.
                    My main concern is moving from &quot;making it work&quo=
t; to
                    &quot;making it right.&quot; What are some resources th=
at&#39;ll
                    help me design and write code that &quot;fits&quot; wit=
h the
                    design philosophy behind OOT modules for GR4. I feel
                    like this will be very important for my proposal=C2=A0<=
/p>
                  <h3>3. Use of bokeh=C2=A0=C2=A0</h3>
                  <div>I wrote the POC in bokeh and focused on it when
                    experimenting because its what was mentioned in the
                    project description and there are plenty of
                    resources for it. However while researching=C2=A0I foun=
d
                    that in=C2=A0<a href=3D"https://wiki.gnuradio.org/index=
.php?title=3DEuropean_GNU_Radio_Days/2025" style=3D"font-family:sans-serif;=
font-size:14px" target=3D"_blank">European
                      GNU Radio Days</a>=C2=A0in the next generation remote
                    GUI section. &quot;<span style=3D"color:rgb(32,33,34);f=
ont-family:sans-serif;font-size:14px">Imgui&quot;</span><span style=3D"colo=
r:rgb(32,33,34);font-family:sans-serif;font-size:14px">=C2=A0=C2=A0was
                      considered a good candidate=C2=A0to be used for
                      wireless plotting for GNU Radio 4.0. Has the
                      community moved away from this opinion ? is it
                      still present ? Should I write my proposal with
                      only one library in mind or be flexible and have
                      this been decided later on in development=C2=A0?=C2=
=A0=C2=A0</span></div>
                  <h3>4. Why This Project?</h3>
                  <p>I initially looked for something with a bit more
                    DSP and communications concepts. However this
                    project feels important, and I decided to go with
                    something which would have an impact instead of
                    wasting time thinking of a custom project to propose
                    that had me playing with some of the concepts i was
                    most interested=C2=A0in.=C2=A0</p>
                  <p>I am really looking forward to the possibility of
                    contributing to GNU Radio this summer as part of
                    GSOC. Thank you for your time and for any pointers
                    you can provide!</p>
                  <p>cyberspectrum is best spectrum=C2=A0(I think the code
                    word is for the proposal only but one can never be
                    too safe lol)</p>
                  <p>Sincerely,</p>
                  <div>Ziad=C2=A0</div>
                  <span class=3D"gmail_signature_prefix">-- </span><br>
                  <div dir=3D"ltr" class=3D"gmail_signature">
                    <div dir=3D"ltr">
                      <div><font size=3D"1" color=3D"#666666">Ziad Haithem
                          Fahmy</font></div>
                      <div><span style=3D"font-size:x-small"><font color=3D=
"#666666">ID:202201027</font></span></div>
                      <div><span style=3D"font-size:x-small"><font color=3D=
"#666666">=C2=A0</font></span></div>
                      <div><font size=3D"1" color=3D"#666666">Communication=
s
                          and Information Engineering Student</font></div>
                      <div>
                        <p class=3D"MsoNormal" style=3D"margin-bottom:6pt;l=
ine-height:normal"><font size=3D"1" color=3D"#666666"><span style=3D"font-f=
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pan>=C2=A0=C2=A0</font></p>
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olor:rgb(34,34,34);line-height:normal"><span style=3D"font-family:Arial,san=
s-serif"><font size=3D"1"><a href=3D"https://goo.gl/maps/bbNTX7EMrbZA1Lhu7"=
 style=3D"color:rgb(17,85,204)" target=3D"_blank">Ahmed
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                                Giza=C2=A012578, Egypt</a></font></span></p=
>
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