 09 Nov 2021, Francesco Renga, Forum, Issue in data writing speed
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Dear all,
I've a frontend writing a quite big bunch of data into a MIDAS bank (16bit output from a 4MP photo camera).
I'm experiencing a writing speed problem that I don't understand. When the photo camera is triggered at a low rate (< 2 Hz)
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09 Nov 2021, Hunter Lowe, Forum, MityCAMAC Login
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Hello all,
I've recently acquired a MityCAMAC system that was built at TRIUMF and I'm
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 10 Nov 2021, Stefan Ritt, Forum, Issue in data writing speed
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Midas uses various buffers (in the frontend, at the server side before the SYSTEM buffer, the SYSTEM buffer itself, on the
logger before writing to disk. All these buffers are in RAM and have fast access, so you can fill them pretty quickly. When
they are full, the logger writes to disk, which is slower. So I believe at 2 Hz your disk can keep up with your writing
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11 Nov 2021, Thomas Lindner, Forum, MityCAMAC Login
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Hi Hunter
This sounds like a Triumf specific problem;
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19 Nov 2021, Jacob Thorne, Forum, Sequencer error with ODB Inc
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Hi,
I am having problems with the midas sequencer, here is my code:
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02 Dec 2021, Stefan Ritt, Forum, Sequencer error with ODB Inc
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Thanks for reporting that bug. Indeed there was a problem in the sequencer code which I fixed now. Please try the updated develop branch.
Stefan |
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16 Dec 2021, Zaher Salman, Forum, Device driver for modbus
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| Dear all, does anyone have an example of for a device driver using modbus or modbus tcp to communicate with a device and willing to share it? Thanks. |
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26 Jan 2022, Frederik Wauters, Forum, .gz files
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I adapted our analyzer to compile against the manalyzer included in the midas repo.
All our data files are .mid.gz, which now fail to process :(
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26 Jan 2022, Konstantin Olchanski, Forum, .gz files
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> I adapted our analyzer to compile against the manalyzer included in the midas repo.
> TMReadEvent: error: short read 0 instead of -1193512213
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26 Jan 2022, Konstantin Olchanski, Forum, Device driver for modbus
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> Dear all, does anyone have an example of for a device driver using modbus or modbus tcp to communicate with a device and willing to share it? Thanks.
I have not seen any modbus devices recently, so all my code and examples are quite old.
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26 Jan 2022, Konstantin Olchanski, Forum, Issue in data writing speed
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Francesco, when you say "writing an event is slow", do you mean it in the frontend
or in the output data file?
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26 Jan 2022, Konstantin Olchanski, Forum, Issue in data writing speed
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> Francesco, when you say "writing an event is slow", do you mean it in the frontend
> or in the output data file?
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26 Jan 2022, Konstantin Olchanski, Forum, mhttpd error
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> > Enable IPv6 y
>
> Probably the IPv6 problem, see here elog:2269
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29 Jan 2022, Isaac Labrie Boulay, Forum, MIDAS and GRIF-16 digitizer (Standalone Mode).
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Hi all,
I was sent a version of the frontend for the TIGRESS Detector lab setup so that
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31 Jan 2022, Frederik Wauters, Forum, .gz files
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> > I adapted our analyzer to compile against the manalyzer included in the midas repo.
> > TMReadEvent: error: short read 0 instead of -1193512213
>
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07 Feb 2022, Konstantin Olchanski, Forum, MidasWiki moved from ladd00 to daq00.triumf.ca and updated to MediaWiki 1.35
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MidasWiki moved from ladd00 (obsolete SL6) to daq00.triumf.ca (Ubuntu LTS 20.04)
and updated from obsolete MediaWiki LTS 1.27.7 to MediaWiki LTS 1.35, supported
until mid-2023, see https://www.mediawiki.org/wiki/Version_lifecycle
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10 Feb 2022, Francesco Renga, Forum, OPC client within MIDAS 
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Dear all,
I finally succeeded to get a working driver for the communication with an OPC
UA server. It is based on the open62541 library and I use it in combination with the
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23 Mar 2022, Hunter Lowe, Forum, ODB has issue with example analyzer
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Trying to play with midas file but I get error:
[Analyzer,ERROR] [odb.cxx:845:db_validate_name,ERROR] Invalid name "/Analyzer/Tests/low_sum/Rate [Hz]" passed to db_create_key_wlocked: should not contain |
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29 Mar 2022, Hunter Lowe, Forum, Triggering without LAM signal - mcstd_libgpmc_camac driver
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Hello,
I have a question for anyone experienced with simple CAMAC systems.
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30 Apr 2022, Giovanni Mazzitelli, Forum, S3 Object Storage
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Dear all,
We are storing raw MIDAS files to S3 Object Storage, but MIDAS file are not
optimised for readout from such kind of storage. There is any work around on
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