 13 Nov 2023, Konstantin Olchanski, Forum, mlogger does not HAVE_ROOT
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> I am setting up Midas (v2.1) for a new experiment. We want to save the data in the ROOT format. We installed ROOT from source (v6.28/06), and ROOTSYS
is set. When we compile Midas, it says that it found ROOT. We set up a second logger channel where we set the filename to run%05d.root, the format to ROOT,
and the output to ROOT. Nevertheless, when starting a run, the logger writes the error that "channel '1' requested ROOT output, but mlogger is built without |
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14 Nov 2023, Konstantin Olchanski, Forum, mlogger does not HAVE_ROOT
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> Finally, make sure you start "rmlogger" and not "mlogger". Only "rmlogger" contains the ROOT binding.
Stefan is right. I forgot this. As solution to our troubles, mlogger is built without root support. use rmlogger instead.
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 27 Dec 2023, Konstantin Olchanski, Forum, MidasWiki updated to 1.39.6
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MidasWiki was updated to current mediawiki LTS 1.39.6 supported until Nov 2025,
see https://www.mediawiki.org/wiki/Version_lifecycle
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29 Dec 2023, Konstantin Olchanski, Bug Report, Compilation error on RPi
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> git pull
> git submodule update
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02 Jan 2024, Konstantin Olchanski, Forum, midas.triumf.ca alias moved to daq00.triumf.ca
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the DNS alias for midas.triumf.ca moved from old ladd00.triumf.ca to new
daq00.triumf.ca. same as before it redirects to the MidasWiki and to the midas
forum (elog) that moved from ladd00 to daq00 quite some time ago. if you see any
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03 Jan 2024, Konstantin Olchanski, Forum, midas.triumf.ca alias moved to daq00.triumf.ca
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> I found the first issue: The link to
> https://midas.triumf.ca/MidasWiki/index.php/Custom_plots_with_mplot
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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, Konstantin Olchanski, Bug Report, Warnings about ODB keys that haven't been touched for 10+ years
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> I don't immediately see a reason for saying that if a DB key is older than 10 yrs, it may not be valid.
>
> However, it would be worth learning what was the logic behind choosing 10 yrs as a threshold.
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28 Jan 2024, Konstantin Olchanski, Forum, History tags
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> This part of the system has been designed by KO, so he should reply here.
That's right. Some of this stuff is historical gibberish that is no longer needed
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28 Jan 2024, Konstantin Olchanski, Forum, a scroll option for "add history variables" window?
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> > Have you updated to the current midas version? This issue has been fixed a while ago.
>
> Hi Stefan, thanks a lot! I pulled from the head, and the scrolling works now. -- regards, Pasha
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28 Jan 2024, Konstantin Olchanski, Forum, dump history FILE files
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$ cat mhf_1697445335_20231016_run_transitions.dat
event name: [Run transitions], time [1697445335]
tag: tag: /DWORD 1 4 /timestamp
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28 Jan 2024, Konstantin Olchanski, Forum, slow control frontends - how much do they sleep and how often their drivers are called?
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> I have implemented a number of slow control frontends which are directed to update the
> history once in every 10 sec, and they do just that.
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28 Jan 2024, Konstantin Olchanski, Forum, the logic of handling history variables ?
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MIDAS history is very simple:
from your frontend, your write your history data to ODB /eq/xxx/variables (see below)
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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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29 Jan 2024, Konstantin Olchanski, Forum, a scroll option for "add history variables" window?
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familiar situation, "too much data", you dice t or slice it, still too much. BTW, you can try to generate history
plot ODB entries from your program instead of from the history plot editor. K.O. |
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12 Feb 2024, Konstantin Olchanski, Info, MIDAS and ROOT 6.30
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Starting around ROOT 6.30, there is a new dependency requirement for nlohmann-json3-dev from https://github.com/nlohmann/json.
If you use a Ubuntu-22 ROOT binary kit from root.cern.ch, MIDAS build will bomb with errors: Could not find a package configuration file provided by "nlohmann_json"
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13 Feb 2024, Konstantin Olchanski, Forum, forbidden equipment names ?
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> equipment names are 'mu2edaq09:DTC0' and 'mu2edaq09:DTC1'
I think all names permitted for ODB keys are allowed as equipment names, any valid UTF-8,
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13 Feb 2024, Konstantin Olchanski, Bug Fix, string --> int64 conversion in the python interface ?
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> > The symptoms are consistent with a string --> int64 conversion not happening
> > where it is needed.
>
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14 Feb 2024, Konstantin Olchanski, Bug Fix, added ubuntu-22 to nightly build on bitbucket, now need python!
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> Are we running these tests as part of the nightly build on bitbucket? They would be part of
> the "make test" target. Correct python dependancies may need to be added to the bitbucket OS
> image in bitbucket-pipelines.yml. (This is a PITA to get right).
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14 Feb 2024, Konstantin Olchanski, Info, bitbucket permissions
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I pushed some buttons in bitbucket user groups and permissions to make it happy
wrt recent changes.
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