 12 Apr 2021, Ben Smith, Forum, Client gets immediately removed when using a script button.
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> if I use the script button, the logic_controller program is immediately deleted by MIDAS.
This is indeed very curious, and I can't reproduce it on my test experiment. Can you redirect stdout and stderr from the logic_controller program into |
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12 Apr 2021, Ben Smith, Forum, Client gets immediately removed when using a script button.
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I think it would be useful to find the minimal example that exhibits this behaviour.
What happens if your logic controller code is simply the 17 lines below? What happens if you create another script button that only starts the logic controller, |
 06 May 2021, Ben Smith, Info, New feature in odbxx that works like db_check_record()
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For those unfamiliar, odbxx is the interface that looks like a C++ map, but automatically syncs with the ODB - https://midas.triumf.ca/MidasWiki/index.php/Odbxx.
I've added a new feature that is similar to the existing odb::connect() function, but works like the old db_check_record(). The new odb::connect_and_fix_structure() |
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12 May 2021, Ben Smith, Bug Report, mhttpd WebServer ODBTree initialization
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> midas_hatfe_1 | Mongoose web server listening on http address "localhost:8080", passwords OFF, hostlist OFF
> midas_hatfe_1 | [mhttpd,ERROR] [mhttpd.cxx:19160:mongoose_listen,ERROR] Cannot mg_bind address "[::1]:8080"
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09 Jul 2021, Ben Smith, Forum, Problem with python file reader
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Hi Francesco,
Can you send me an example file to look at please? Either attached to the elog or sent directly to bsmith@triumf.ca
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16 Mar 2022, Ben Smith, Bug Report, Python ODB watch
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> It seems that the second write operation "overlaps" the first one...
Hi Gennaro,
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17 May 2022, Ben Smith, Info, MIDAS switched to C++
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> - have you posted somewhere this guide about converting C frontends to C++?
See the instructions at:
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17 May 2022, Ben Smith, Info, MIDAS switched to C++
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> - have you posted somewhere this guide about converting C frontends to C++?
There's documentation in the wiki at:
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14 Oct 2022, Ben Smith, Info, Allow onchange to refer to arbitrary js function
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> I would like to use a function defined in the <script> block of my custom page as an onchange callback.
>
> Is this a possibility?
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21 Apr 2023, Ben Smith, Forum, Setup Midas with Caen vx2740 - ask for help
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> I'm not able to find documentation what is purpose of the RPC? Could someone give any indicators how I can start debug this behavior? Or there is some
documentation about the RPC?
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01 May 2023, Ben Smith, Bug Report, python issue with mathplot lib vs odb query
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> it seams that there is a difference between the to way of use the code, and that
> is sufficient the call to matplotlib to corrupt in some way the odb. any ideas?
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01 May 2023, Ben Smith, Bug Report, python issue with mathplot lib vs odb query
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Looks like a localisation issue. Your floats are formatted as "6,6584e+01", whereas the JSON decoder expects "6.6584e+01".
Can you run the following few lines please? Then I'll be able to write a test using the same setup as you:
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01 May 2023, Ben Smith, Bug Report, python issue with mathplot lib vs odb query
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> Looks like a localisation issue. Your floats are formatted as "6,6584e+01", whereas the JSON decoder expects "6.6584e+01".
This should be fixed in the latest commit to the midas develop branch. The JSON specification requires a dot for the decimal separator, so we must ignore |
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31 May 2023, Ben Smith, Bug Report, Event builder fails at every 10 runs
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> The event builder fails to initiate the 10th run since its startup,
> 'BM_NO_MEMORY: too many requests,'
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16 Oct 2023, Ben Smith, Bug Report, Python midas.file_reader get_eor_odb_dump()
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Thanks for the bug report Gennaro!
I've fixed the code so that we'll now find the end-of-run ODB dump even if the user is already at the end of the file when they call get_eor_odb_dump().
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22 Nov 2023, Ben Smith, Forum, run number from an external (*SQL) db?
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> I wonder if there is a non-intrusive way to have an external (wrt MIDAS)*SQL database
> serving as a primary source of the run number information for a MIDAS-based DAQ system?
> - like a plugin with a getNextRunNumber() function, for example, or a special client?
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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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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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05 Sep 2024, Ben Smith, Forum, Python frontend rate limitations?
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> What limits the rate that poll_func is called in a python frontend?
First the general advice: if you reduce the "period" of your equipment, then your function will get called more frequently. You can set it to 0 and we'll |
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27 Sep 2024, Ben Smith, Forum, Python frontend rate limitations?
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> in your case the limitation is likely that you're sending 1.25MB per event and we have a lot of data marshalling to do between the python and C++ layer.
>
> I'll add it to my to-do list to investigate improving the performance of medium-to-large events in the python code.
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