 22 Sep 2025, Konstantin Olchanski, Info, obsolete mana.c removal
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Following discussions at the MIDAS workshop and the proposed removal of support for ROOT, the very obsolete mana.c
analyzer framework has reached the end of the line.
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 23 Sep 2025, Andreas Suter, Info, obsolete mana.c removal
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Hi,
at the LEM Experiment at PSI, we still use mana.c and would like to keep it until end of 2026, where we will enter a long shutdown.
There we will switch to the manalyzer. Before that, there is simply no time for the change over. One thing I already noticed is the "lack" of documentation, |
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23 Sep 2025, Konstantin Olchanski, Info, obsolete mana.c removal
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> Hi, at the LEM Experiment at PSI, we still use mana.c and would like to keep it until end of 2026, where we will enter a long shutdown.
Excellent, good to hear from you! Once we remove ROOT support rmana.o will be gone, only mana.o (no ROOT) will remain. Will this break your builds?
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24 Sep 2025, Andreas Suter, Info, obsolete mana.c removal
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Sorry,
I have had now the time to dig deeper in our code and realized that we actually use rmana, i.e. WITH ROOT. If there is an easy way to incorporate the necessary |
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06 May 2026, Jonas A. Krieger, Suggestion, numpy version compatibility
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There seems to be a version dependency with the numpy.bool , e.g. used here
https://bitbucket.org/tmidas/midas/src/c6ef4aff5e7e652df79160141e570bed5f4d6a3b/python/midas/sequencer.py?at=develop#sequencer.py-1714 .
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06 May 2026, Ben Smith, Bug Fix, numpy version compatibility
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> There seems to be a version dependency with the numpy.bool
Thanks for reporting this Jonas! I've just updated the code to reference `np.bool_`, which is present in all versions. We use `np.bool_`
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28 Jan 2024, Pavel Murat, Forum, number of entries in a given ODB subdirectory ?
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Dear MIDAS experts,
- I have a detector configuration with a variable number of hardware components - FPGA's receiving data
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28 Jan 2024, Konstantin Olchanski, Forum, number of entries in a given ODB subdirectory ?
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Very good question. It exposes a very nasty problem, the race condition between "ls" and "rm". While you are
looping over directory entries, somebody else is completely permitted to remove one of the files (or add more
files), making the output of "ls" incorrect (contains non-existant/removed files, does not contain newly added
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28 Jan 2024, Stefan Ritt, Forum, number of entries in a given ODB subdirectory ? 
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I guess you won't change your FPGA configuration just when you start a run, so I don't consider the race
condition very crucial (although KO is correct, it it there).
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29 Jan 2024, Pavel Murat, Forum, number of entries in a given ODB subdirectory ?
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Hi Stefan, Konstantin,
thanks a lot for your responses - they are very teaching and it is good to have them archived in the forum.
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29 Jan 2024, Konstantin Olchanski, Forum, number of entries in a given ODB subdirectory ?
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> https://chat.openai.com/share/d927c78d-9914-4413-ab5e-3b0e5d173132
>
> Please note that you never can be 100% sure that the code from a LLM is correct
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03 Feb 2024, Pavel Murat, Forum, number of entries in a given ODB subdirectory ?
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Konstantin is right: KEY.num_values is not the same as the number of subkeys (should it be ?)
For those looking for an example in the future, I attach a working piece of code converted
from the ChatGPT example, together with its printout.
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08 Feb 2024, Stefan Ritt, Forum, number of entries in a given ODB subdirectory ?
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> Konstantin is right: KEY.num_values is not the same as the number of subkeys (should it be ?)
For ODB keys of type TID_KEY, the value num_values IS the number of subkeys. The only issue here is
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11 Feb 2024, Pavel Murat, Forum, number of entries in a given ODB subdirectory ?
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> For ODB keys of type TID_KEY, the value num_values IS the number of subkeys.
this logic makes sense, however it doesn't seem to be consistent with the printout of the test example
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13 Feb 2024, Stefan Ritt, Forum, number of entries in a given ODB subdirectory ?
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> > For ODB keys of type TID_KEY, the value num_values IS the number of subkeys.
>
> this logic makes sense, however it doesn't seem to be consistent with the printout of the test example
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15 Feb 2024, Konstantin Olchanski, Forum, number of entries in a given ODB subdirectory ?
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> > > For ODB keys of type TID_KEY, the value num_values IS the number of subkeys.
> >
> > this logic makes sense, however it doesn't seem to be consistent with the printout of the test example
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15 Feb 2024, Konstantin Olchanski, Forum, number of entries in a given ODB subdirectory ?
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> > You are right, num_values is always 1 for TID_KEYS. The number of subkeys is stored in
> > ((KEYLIST *) ((char *)pheader + pkey->data))->num_keys
> > Maybe we should add a function to return this. But so far db_enum_key() was enough.
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16 Feb 2024, Stefan Ritt, Forum, number of entries in a given ODB subdirectory ?
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> Hmm... is there any use case where you want to know the number of directory entries, but you will not iterate
> over them later?
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19 Feb 2024, Pavel Murat, Forum, number of entries in a given ODB subdirectory ?
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> > Hmm... is there any use case where you want to know the number of directory entries, but you will not iterate
> > over them later?
>
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29 Sep 2021, Richard Longland, Bug Report, nstall clash between MIDAS 2020-08 and mscb
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Thank you, Stefan.
I found these instructions under
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