 29 Feb 2008, Denis Bilenko, Bug Report, NEED_SHLIB=1 is broken
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Having libmidas.so is absolutely necessary for pymidas to work. If there was no such
option in Makefile pymidas users would have to build it themselves.
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 26 Jun 2026, Derek Fujimoto, Info, MySQL Add Column 
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Hello,
The UCN group at TRIUMF has used the history system extensively with a MySQL backend. They see long wait times (up to 20 mins) to add new logged variables |
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01 Jun 2026, Yiwen Yang, Suggestion, Multithreaded deferred transitions
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Hi,
On the DAQ system for T2K's ND280 near detector, we use deferred
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11 Jun 2026, Stefan Ritt, Suggestion, Multithreaded deferred transitions
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Multithreaded transitions were introduced by KO in 2019. Please ask him to make deferred transitions work
again or simply use non-multithreaded transitions.
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25 Jun 2026, Konstantin Olchanski, Suggestion, Multithreaded deferred transitions
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> Multithreaded transitions were introduced by KO in 2019. Please ask him to make deferred transitions work
> again or simply use non-multithreaded transitions.
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25 Jun 2026, Yiwen Yang, Suggestion, Multithreaded deferred transitions
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> I recommend against using them. Maybe you can explain what you do and I can suggest a way
> to avoid using the
deferred transition.
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08 Jul 2026, Konstantin Olchanski, Suggestion, Multithreaded deferred transitions
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> Deferred transition is registered by the FPN00
FPN00, yes, this rings a bell.
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16 Jul 2026, Yiwen Yang, Suggestion, Multithreaded deferred transitions
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> > (main clock) process to make sure the logger has finished logging all events before continuing to stop readout
>
> of other frontends. There is also a timeout, in case sometimes an event goes missing, to proceed with the run
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07 Jul 2026, Marius Koeppel, Suggestion, Multithreaded PySequencer
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Dear all,
I was wondering if one can use multiple pysequencers at the same time and if not
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08 Jul 2026, Konstantin Olchanski, Suggestion, 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.
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03 Aug 2026, Mark Grimes, Suggestion, 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.
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06 Aug 2026, Konstantin Olchanski, Suggestion, 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.
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06 Oct 2026, Marius Koeppel, Suggestion, 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.
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06 Oct 2026, Ben Smith, Suggestion, Multithreaded PySequencer
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> 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.
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04 Sep 2024, Lukas Gerritzen, Bug Report, Multiple issues with mhist
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Hi,
I am having some trouble with mhist. I suppose that the problems are at least partially due to our specific needs which might exceed what has been tested. |
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11 Sep 2024, Konstantin Olchanski, Bug Report, Multiple issues with mhist
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I think I can offer some insight into your problems:
1) your mhist crash is due to the ODB timeout, it is probably set to 30 seconds in ODB /programs/mhist. you will
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08 Oct 2009, Exaos Lee, Bug Report, Multiple definition of `SqlODBC::SqlODBC()
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I found there are two SqlODBC defined in different sources.
[CODE]
$ grep -n "class SqlODBC" src/*
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09 Oct 2009, Konstantin Olchanski, Bug Report, Multiple definition of `SqlODBC::SqlODBC()
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> Linking CXX shared library lib/libmidas.so
/usr/bin/c++ ... -o lib/libmidas.so ... CMakeFiles/midas-shared.dir/src/history_odbc.cxx.o
CMakeFiles/midas-shared.dir/src/history_sql.cxx.o
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11 Oct 2009, Konstantin Olchanski, Bug Report, Multiple definition of `SqlODBC::SqlODBC()
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> > Why is the class "SqlODBC" duplicated?
>
> This is interesting. I do not think my C++ book spells it out that I cannot have class A in foo.cxx
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17 Oct 2007, Randolf Pohl, Forum, Multi-core CPUs
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Dear Forum,
I have this beautiful Intel Quadcore with fast disks, but MIDAS does obviously
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