[Dune-devel] Online developer meeting: 2021-01-08 and 2021-01-22

[Simon Praetorius]

Maybe I have given a wrong impression: I'm not against the open-source 
solutions in general. My personal experience in the last two university 
semesters with online lectures, tutorials and seminars, has shown that 
the smoothest and most stable solution was either Zoom or BBB. I had 
several sessions started in Jitsi that simply were not usable. But, this 
is my personal experience using either our university server that was 
recently upgraded or the meet.jitsi.se server. If there are better 
experiences in other instances, we could try it out. Our university 
jitsi instance is recommended for 10-15 people maximum, and the host 
must be someone with a university login. I could be the host and 
probably Oliver could be a host too.

I have time today and will be happy to join the test meeting.

Best,
Simon


BTW: Many research conferences use a proprietary video conferencing 
tools, even zoom. To despise these tools is also not constructive. It 
often just works smoothly. In the rC3 conference they used an 
open-source solution and it ended up not very stable with several 
problems in the live sessions.

Am 04.01.21 um 13:18 schrieb Markus Blatt:
> On Mon, Jan 04, 2021 at 11:57:53AM +0100, Simon Praetorius wrote:
>> Hi Markus,
>>
>> Jitsi is not usable for more than let's say 5 people simultaneously.
>> Neither the public meet.jitsi.si nor a locally hosted instance. In
>> half of the sessions it simply does not work at all. This is due to
>> the heavy video load that is during the semester time in the
>> universities. There is also the DFN video-conference solution - not
>> stable either.
>
> We should be very careful with such statments. Even more if they endorse
> proprietary services. I am pretty sure I have done meetings with more than 5
> on meet.jit.si. I heavily doubt your statement about the limits of locally
> hosted instances, see the screenshot at https://www.dr-blatt.de/static/images/Bildschirmfoto_jitsi_2021-01-04_12-44-00.png for a counter example.
>
> Of course that instance does not use the default settings, but tries to
> be conservative (bare metal, 1 GB network, limited resolution, limited
> number of concurrent video streams, etc.). Of course there is always a limit
> and it is not set up to scale (has just two videobridges).
>
> We have 13 people in the doodle and a privately hosted instance should handle
> this. Let's get constructive and try to push open source:
>
> - let's test my instance tonight at 20:00 CET at jisti.eichstaett.social/DUNEMeetingTest
> - If that is successfull, I set up an instance where only our meeting will be
>    heldt.
> - If that does not work we can use the solution-that-should-not-be-named as
>    a fallback.
>
> Anyway in any meeting there is no need to stress test servers by having video
> on all the time in large meetings.
>
> I would really like to avoid using proprietary stuff in my unpaid time and
> have abstained from it the past.
>
>
> Cheers,
>
> Markus
>
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-- 
Dr. Simon Praetorius
Technische Universität Dresden
Institute of Scientific Computing
phone: +49 351 463-34432
mail: simon.praetorius at tu-dresden.de
web: https://tu-dresden.de/mn/math/wir/das-institut/beschaeftigte/simon-praetorius