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07 Jul 2026, Marius Koeppel, Suggestion, Multithreaded PySequencer
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08 Jul 2026, Konstantin Olchanski, Suggestion, Multithreaded PySequencer
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03 Aug 2026, Mark Grimes, Suggestion, Multithreaded PySequencer
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06 Aug 2026, Konstantin Olchanski, Suggestion, Multithreaded PySequencer
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06 Oct 2026, Marius Koeppel, Suggestion, Multithreaded PySequencer
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Message ID: 3283
Entry time: 06 Oct 2026
In reply to: 3260
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| Author: |
Marius Koeppel |
| Topic: |
Suggestion |
| Subject: |
Multithreaded PySequencer |
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> > > > I was wondering if one can use multiple pysequencers at the same time and if not
> > > > if this feature is planned in the future? Our experiment (mu3e) has one frontend
> > > > per detector and each sequencer would only access a subset of ODB entries.
> > >
> > > I believe sequencer design supports this, same as mlogger supports multiple output
> > > files and mhttpd supports multiple listener ports.
> > >
> > > But how to do this with pysequencer, I am not sure. Simplest is to wait a few more
> > > weeks for Ben to return from vacation.
> > >
> > > K.O.
> >
> > I looked into this, and it has been possible for at least a year. Just start the sequencer with `-c MyUniqueName` and
> > then all of the state etc. can be controlled from the ODB location `/PySequencerMyUniqueName/`.
> > And obviously use different names for each instance.
>
> that's what I remember, too. but was not sure. K.O.
I looked into this now and it seems to work but the issue is that even when using only one sequencer with -c MyUniqueName
the page does not work anymore. We tried to create our own custom page for this now but maybe a nice addition would be to
simply change the custom page to also support multiple sequencers. |