 26 May 2025, Stefan Ritt, Forum, Reading two devices in parallel
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> Dear experts,
> in the CYGNO experiment, we readout CMOS cameras for optical readout of GEM-TPCs. So far, we only developed the readout for a single camera. In
the future, we will have multiple cameras to read out (up to 18 in the next phase of the experiment), and we are investigating how to optimize the readout |
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10 Jun 2025, Stefan Ritt, Info, use of modified image showing MIDAS data format?
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> Hello, I'm currently writing a paper about making a dataset publicly available
> from the University of Minnesota and it's a MIDAS dataset.
>
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 10 Jun 2025, Stefan Ritt, Info, History configuration changed
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Today the way the history system is configured has changed. Whenever one adds new equipment
variables, the logger has to add that variable to the history system. Previously, this happened during
startup of the logger and at run start. We have now a case in the Mu3e experiment where we have many
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11 Jun 2025, Stefan Ritt, Info, Frontend write cache size
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We had issues with the frontend write cache size and the way it was implemented in the frontend
framework mfe. Specifically, we had two equipments like in the experiment/examples/frontend.cxx, one
trigger event and one periodic event. While the trigger event sets the cache size correctly in the
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19 Jun 2025, Stefan Ritt, Bug Report, History variables with leading spaces
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I added now code to the logger so it properly complains if there would be a leading space in a variable name.
Stefan
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23 Jun 2025, Stefan Ritt, Bug Report, Memory leak in mhttpd binary RPC code
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Since this memory leak is quite obvious, I pushed the fix to develop.
Stefan |
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21 Jul 2025, Stefan Ritt, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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> Perhaps have:
>
> set_write_cache_size("SYSTEM", 0);
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18 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > Of course with this patch extending manalyzer to process two or more runs at the same time becomes impossible.
>
> Yes, I hadn't realised that was an option. For that to work I guess the aforementioned static members could be made thread local storage, and
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22 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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I will work today on the odbxx API to make sure there are no memory leaks when you switch form one file to another. I talked to KO so he agreed that yo
then commit your proposed change of manalyzer
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22 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > I will work today on the odbxx API to make sure there are no memory leaks when you switch form one file to another. I talked to KO so he agreed that
yo then commit your proposed change of manalyzer
>
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22 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > > Of course with this patch extending manalyzer to process two or more runs at the same time becomes impossible.
> > Yes, I hadn't realised that was an option.
>
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02 Oct 2025, Stefan Ritt, Forum, struct size mismatch of alarms
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Sorry to intervene there, but the FEs are usually compiled against libmidas.a . Therefore you have to compile midas, usually do a "make install" to update
the libmidas.a/so, then recompile the FEs. You probably forgot the "make install".
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13 Nov 2025, Stefan Ritt, Bug Report, broken scroll on midas web pages
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I confirm the problem is there (at least under MacOSX Safari) and I will take care of it.
Stefan |
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13 Nov 2025, Stefan Ritt, Suggestion, Python sc_frontend.py Display and History variables
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> We would like to write an sc_frontend in Python instead of C++. All our drivers
> work correctly, as well as the creation of the database in the ODB, including the
> creation of Commons, Statistics, Variables, and Settings.
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14 Nov 2025, Stefan Ritt, Bug Report, broken scroll on midas web pages
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This problem was introduced by ZS in March 2023 with these commits:
https://bitbucket.org/tmidas/midas/commits/25b13f875ff1f7e2f4e987273c81d6356dd2ff53
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24 Nov 2025, Stefan Ritt, Forum, Control external process from inside MIDAS
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Dear all,
Stefan wants to run an external EPICS driver process as a detached process and somehow "glue" it to midas to control it. Actually a
similar requirement led to the development of MIDAS in the '90s. We had too many configuration files lying around, to many process to control and interact |
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24 Nov 2025, Stefan Ritt, Info, switch midas to c++17
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> > > Following discussions at the MIDAS workshop, we propose to move MIDAS from c++11 to c++17.
> > We shall move forward with this change.
>
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24 Nov 2025, Stefan Ritt, Bug Report, Cannot edit values in a subtree containing only a single array of BOOLs using the ODB web interface 
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Can you please update to the latest develop versiokn of midas, and clear your browser cache so that the updated JavaScript midas library is loaded. Should
be fixed by now. See attached screen shot where I changed every second value via the ODB editor.
Stefan |
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25 Nov 2025, Stefan Ritt, Bug Fix, ODB update, branch feature/db_delete_key merged into develop
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Thanks for the fixes, which I all approve.
There is still a "follow_links" in midas_c_compat.h line 70 for Python. Probably Ben has to look into that. Also
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26 Nov 2025, Stefan Ritt, Info, switch midas to c++17
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I switched from
target_compile_features(<target> PUBLIC css_std_17)
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