 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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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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17 Oct 2007, Stefan Ritt, Forum, Multi-core CPUs
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> I have this beautiful Intel Quadcore with fast disks, but MIDAS does obviously
> only make use of one CPU at a time. Has anyboy of you already done some work
> on making MIDAS parallel? Event-based data analysis should be the best
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22 May 2020, Thomas Lindner, Bug Report, More trouble with openssl on macos
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For the record, here's my report of difficulties getting mongoose to compile with macos. This is a similar
problem reported before, but with slightly different error messages. So I put them here for posterity.
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22 May 2020, Konstantin Olchanski, Bug Report, More trouble with openssl on macos
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> For the record, here's my report of difficulties getting mongoose to compile with macos.
> -- MIDAS: Found OpenSSL version 1.0.2s
> -- MIDAS: Found OpenSSL version 1.1.1g
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11 Oct 2021, Stefan Ritt, Info, Modification in the history logging system
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A requested change in the history logging system has been made today. Previously, history values were
logged with a maximum frequency (usually once per second) but also with a minimum frequency, meaning
that values were logged for example every 60 seconds, even if they did not change. This causes a problem.
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