 27 Feb 2007, Piotr Zolnierczuk, Forum, event builder scalability
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Hi there:
I have a question if there's anybody out there running MIDAS with event builder
that assembles events from more that just a few front ends (say on the order of
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 27 Feb 2007, Stefan Ritt, Forum, event builder scalability
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> Hi there:
> I have a question if there's anybody out there running MIDAS with event builder
> that assembles events from more that just a few front ends (say on the order of
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27 Feb 2007, John M O'Donnell, Forum, event builder scalability
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At Los Alamos, we have 15+1 frontends - the 15 between them read about 2 or 3
TB/hour and reduce it to 1 to 5 GB/hour which is then sent to the mevb on a 17th
computer. The 16th frontend handles deadtime issues and scalers (small data rate).
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27 Feb 2007, Stefan Ritt, Forum, event builder scalability
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> Our bottle neck is (a) compactPCI backplane reading data from waveform digitizers
> to the frontend CPUs and (b) CPU power on the frontend CPUs to analyzer the waveforms.
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02 Mar 2007, Kevin Lynch, Forum, event builder scalability
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> Hi there:
> I have a question if there's anybody out there running MIDAS with event builder
> that assembles events from more that just a few front ends (say on the order of
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03 Mar 2007, Piotr Zolnierczuk, Forum, event builder scalability
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Hi all,
thank you for all responses.
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03 Mar 2007, Stefan Ritt, Forum, event builder scalability
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> It seems that there's no problem running MIDAS with event builder assembling
> data from ~10 front-ends. How about ~100? One possible solution is to have a
> multi-tiered architecture.
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21 Jul 2019, Konstantin Olchanski, Info, error handling is hard
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Happy summer to everybody.
When programming in general, and when programming MIDAS, there is always a struggle
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29 Jul 2015, Javier Praena, Forum, error 
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Hello, I am new in the forum. We are running an experiment for a week with no
problems. Now we add a detector a we found an error. Even we come back to our
previous configuration the error continues appearing. Please, may someone help
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29 Jul 2015, Wes Gohn, Forum, error
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SIGSEGV is a segmentation fault. Most often it means some ODB parameter is out of bounds or there is
an invalid memcpy somewhere in your code.
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29 Jul 2015, Konstantin Olchanski, Forum, error
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> Hello, I am new in the forum. We are running an experiment for a week with no
> problems. Now we add a detector a we found an error. Even we come back to our
> previous configuration the error continues appearing. Please, may someone help
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30 Mar 2022, Konstantin Olchanski, Bug Fix, erroneous removal of odb clients, fixed
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commit https://bitbucket.org/tmidas/midas/commits/b1fe21445109774be3f059c2124727b414abf835
made on 2022-02-21 fixed a serious bug in ODB.
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19 Sep 2023, Frederik Wauters, Bug Report, epics fe "Start Command"
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The epics frontend overwrites the "start command" odb after each start:
// set start command in ODB
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20 Sep 2023, Stefan Ritt, Bug Report, epics fe "Start Command"
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Thanks for reporting this problem. It has been fixed today, so the start command is only written if it's emtpy.
Stefan |
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17 May 2018, Zaher Salman, Forum, embedding history in SVG
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I am embedding histories into a custom page within an SVG,
<image x="21000" y="1000" width="6000" height="6000"
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10 Mar 2021, Zaher Salman, Suggestion, embed modbvalue in SVG
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Is it possible to embed modbvalue in an SVG for use within a custom page?
thanks. |
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10 Mar 2021, Stefan Ritt, Suggestion, embed modbvalue in SVG
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You can't really embed it, but you can overlay it. You tag the SVG with a
"relative" position and then move the modbvalue with an "absolute" position over
it:
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26 Apr 2021, Zaher Salman, Suggestion, embed modbvalue in SVG
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I found a way to embed modbvalue into a SVG:
<text x="100" y="100" font-size="30rem">
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22 Mar 2016, Konstantin Olchanski, Info, emacs web-mode.el
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For those who use emacs to edit web pages - the built-in CSS and Javascript modes seem to work
just fine for editing files.css and files.js, but the built-in html modes fall flat on modern web pages
which contain a mix of html, javascript inside <script> tags and javascript inside button "onclick"
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30 Mar 2004, Konstantin Olchanski, , elog fixes
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I am about to commit the mhttpd Elog fixes we have been using in TWIST since
about October. The infamous Elog "last N days" problem is fixed, sundry
memory overruns are caught and assert()ed.
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