 03 May 2024, Thomas Senger, Suggestion, Possible addition to IF Statements
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Hello there,
in our setup we use many variables with many different exceptions. Would it be possible to implement something like an
IF or/and IF statement? I believe that this is currently not possible.
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 03 May 2024, Stefan Ritt, Suggestion, Possible addition to IF Statements
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The tinyexpr library I use to evaluate expressions does not support boolean operations. I would have to switch to the newer
tineyexpr-plusplus version, which also has much richer functionality:
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15 Apr 2024, Konstantin Olchanski, Bug Report, open MIDAS RPC ports
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we had a bit of trouble with open network ports recently and I now think security of MIDAS RPC
ports needs to be tightened.
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15 Apr 2024, Stefan Ritt, Bug Report, open MIDAS RPC ports
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One thing coming to my mind is the interface binding. If you have a midas host with two networks
("global" and "local"=192.168.x.x), you can tell to which interface a socket should bind.
By default it binds both interfaces, but we could restrict the socket only to bind to the local
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18 Mar 2024, Grzegorz Nieradka, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error
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I tried to update MIDAS installation on Ubuntu 22.04.1 to the latest commit at
the bitbucket.
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18 Mar 2024, Konstantin Olchanski, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error
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> [ 34%] Linking CXX executable manalyzer_test.exe
> /usr/bin/ld: /home/astrocent/workspace/root/root_install/lib/libRIO.so: undefined
> reference to
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19 Mar 2024, Grzegorz Nieradka, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error 
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Dear Konstantin,
Thank you for your interest in my problem.
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19 Mar 2024, Konstantin Olchanski, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error
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ok, thank you for your information. I cannot reproduce this problem, I use vanilla Ubuntu
LTS 22, ROOT binary kit root_v6.30.02.Linux-ubuntu22.04-x86_64-gcc11.4 from root.cern.ch
and latest midas from git.
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19 Mar 2024, Konstantin Olchanski, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error
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> ok, thank you for your information. I cannot reproduce this problem, I use vanilla Ubuntu
> LTS 22, ROOT binary kit root_v6.30.02.Linux-ubuntu22.04-x86_64-gcc11.4 from root.cern.ch
> and latest midas from git.
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28 Mar 2024, Grzegorz Nieradka, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error
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I found solution for my trouble. With MIDAS and ROOT everything is OK,
the trobule was with my Ubuntu enviroment.
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02 Apr 2024, Konstantin Olchanski, Bug Report, Midas (manalyzer) + ROOT 6.31/01 - compilation error
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> I found solution for my trouble. With MIDAS and ROOT everything is OK,
> the trobule was with my Ubuntu enviroment.
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02 Apr 2024, Zaher Salman, Info, Sequencer editor
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Dear all,
Stefan and I have been working on improving the sequencer editor to make it look and feel more like a standard editor. This sequencer v2 has been finally
merged into the develop branch earlier today.
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02 Apr 2024, Konstantin Olchanski, Info, Sequencer editor
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> Stefan and I have been working on improving the sequencer editor ...
Looks grand! Congratulations with getting it completed. The previous version was
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01 Apr 2024, Konstantin Olchanski, Info, xz-utils bomb out, compression benchmarks
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you may have heard the news of a major problem with the xz-utils project, authors of the popular "xz" file compression,
https://nvd.nist.gov/vuln/detail/CVE-2024-3094
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10 Mar 2024, Zaher Salman, Bug Report, Autostart program
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Hello everyone,
It seems that if a frontend is started automatically by using Program->Auto start then the status page does not show it as started. This is since the FE |
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11 Mar 2024, Konstantin Olchanski, Bug Report, Autostart program
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> It seems that if a frontend is started automatically by using Program->Auto start then the status page does not show it as started. This is since the
FE name has a number after the name. If I stop and start manually then the status page shows the correct state of the FE. Am I doing something wrong or
is this a bug somewhere?
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08 Mar 2024, Konstantin Olchanski, Info, MIDAS frontend for WIENER L.V. P.S. and VME crates
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Our MIDAS frontend for WIENER power supplies is now available as a standalone git repository.
https://bitbucket.org/ttriumfdaq/fewienerlvps/src/master/
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27 Feb 2024, Pavel Murat, Forum, displaying integers in hex format ?
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Dear MIDAS Experts,
I'm having an odd problem when trying to display an integer stored in ODB on a custom
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27 Feb 2024, Stefan Ritt, Forum, displaying integers in hex format ?
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Thanks for reporting that bug. I fixed it and committed the change to the develop branch.
Stefan |
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27 Feb 2024, Pavel Murat, Forum, displaying integers in hex format ?
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Hi Stefan (and Ben),
thanks for reacting so promptly - your commits on Bitbucket fixed the problem.
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30 Mar 2016, Belina von Krosigk, Forum, mserver ERR message saying data area 100% full, though it is free
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Hi,
I have just installed Midas and set-up the ODB for a SuperCDMS test-facility (on
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26 Feb 2024, Maia Henriksson-Ward, Forum, mserver ERR message saying data area 100% full, though it is free
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> Hi,
>
> I have just installed Midas and set-up the ODB for a SuperCDMS test-facility (on
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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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15 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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15 Jan 2024, Frederik Wauters, Forum, dump history FILE files
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We switched from the history files from MIDAS to FILE, so we have *.dat files now (per variable), instead of the old *.hst.
How shoul
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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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18 Feb 2024, Frederik Wauters, 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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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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03 Feb 2024, Pavel Murat, Bug Report, string --> int64 conversion in the python interface ?
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Dear MIDAS experts,
I gave a try to the MIDAS python interface and ran all tests available in midas/python/tests.
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05 Feb 2024, Ben Smith, 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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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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05 Feb 2024, Pavel Murat, Forum, forbidden equipment names ?
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Dear MIDAS experts,
I have multiple daq nodes with two data receiving FPGAs on the PCIe bus each.
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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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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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16 Jan 2024, Pavel Murat, Forum, a scroll option for "add history variables" window?
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Dear all,
I have a "slow control" frontend which reads out 100 slow control parameters.
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16 Jan 2024, Stefan Ritt, 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. Below
you see a screenshot of a long list scrolled all the way to the bottom.
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17 Jan 2024, Pavel Murat, 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, 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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29 Jan 2024, Pavel Murat, Forum, a scroll option for "add history variables" window?
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> If you have some ideas on how to better present 100500 history variables, please shout out!
let me share some thoughts. In a particular case which lead to the original posting,
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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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22 Jan 2024, Ben Smith, Bug Report, Warnings about ODB keys that haven't been touched for 10+ years
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We have an experiment that's been running for a long time and has some ODB keys that haven't been touched in ages. Mostly related to features that we don't
use like the elog and lazylogger, or things that don't change often (like the logger data directory).
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22 Jan 2024, Stefan Ritt, Bug Report, Warnings about ODB keys that haven't been touched for 10+ years
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> What's the best way to make these messages go away?
> - Change the logic in db_validate_and_repair_key_wlocked() to not worry if keys are 10+ years old?
> - Write a script to "touch" all the old keys so they've been modified recently?
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23 Jan 2024, Nick Hastings, Bug Report, Warnings about ODB keys that haven't been touched for 10+ years
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Hi,
> What's the best way to make these messages go away?
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24 Jan 2024, Pavel Murat, 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, 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, Stefan Ritt, Bug Report, Warnings about ODB keys that haven't been touched for 10+ years
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> Please run "git blame" to find out who added that check.
OK ok, was me. But actually 2003. I hope that this being more than 20y ago excuses me not remembering it ;-)
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11 Dec 2023, Pavel Murat, Forum, the logic of handling history variables ? 11x
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Dear MIDAS developers,
I'm trying to understand handling of the history (slow control) variables in MIDAS,
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11 Dec 2023, Stefan Ritt, Forum, the logic of handling history variables ?
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First of all it's important to understand that the slow control system has nothing to do
with events. So if you look at event statistics, these are the events with the slow control
data sent to the midas data file, not the history database. So the logging period (the one you
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12 Dec 2023, Pavel Murat, Forum, the logic of handling history variables ?
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Hi Sfefan, thanks a lot for taking time to reproduce the issue!
Here comes the resolution, and of course, it was something deeply trivial :
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13 Dec 2023, Stefan Ritt, Forum, the logic of handling history variables ?
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> Also, I think that having a sine wave displayed by midas/examples/slowcont/scfe.cxx
> would make this example even more helpful.
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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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10 Jan 2024, Pavel Murat, Forum, slow control frontends - how much do they sleep and how often their drivers are called?
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Dear all,
I have implemented a number of slow control frontends which are directed to update the
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11 Jan 2024, Stefan Ritt, Forum, slow control frontends - how much do they sleep and how often their drivers are called?
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Put a
ss_sleep(10);
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11 Jan 2024, Pavel Murat, Forum, slow control frontends - how much do they sleep and how often their drivers are called?
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Hi Stefan, thanks a lot !
I just thought that for the EQ_SLOW type equipment calls to sleep() could be hidden in mfe.cxx
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12 Jan 2024, Stefan Ritt, Forum, slow control frontends - how much do they sleep and how often their drivers are called?
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> Hi Stefan, thanks a lot !
>
> I just thought that for the EQ_SLOW type equipment calls to sleep() could be hidden in mfe.cxx
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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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17 Jan 2024, Francesco Renga, Forum, History tags
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Dear experts,
I would like to have some clarification about the meaning and use of the
tags in the ODB under /History/Tags.
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18 Jan 2024, Stefan Ritt, Forum, History tags
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This part of the system has been designed by KO, so he should reply here.
Stefan |
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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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