 25 Apr 2020, Konstantin Olchanski, Forum, API to read MIDAS format file
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<p>[quote="Pintaudi Giorgio"]Dear MIDAS people, I need to borrow your
wisdom for a bit. I am developing a piece of software that should read the history data
stored in a [FONT=Times New Roman].midas[/FONT] file (MIDAS format) and integrate it
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03 May 2020, Pintaudi Giorgio, Forum, API to read MIDAS format file
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> The format of .hst midas history files is pretty simple and mhdump.cxx is an easy to read
> illustration on how to read it from basic principles (without going through the midas library,
> which can be somewhat complicated). The newer "FILE" format for history is even simpler
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03 May 2020, Konstantin Olchanski, Forum, API to read MIDAS format file
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>
> - One is to convert to SQL format and then use a SQLite library to import the data in my
> application.
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03 May 2020, Stefan Ritt, Forum, API to read MIDAS format file 
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> PS some time ago, I don't remember if you or Stefan, recommended CLion as C++ IDE. I have tried it
> (together with PyCharm) and I must admit that it is really good. It took me years to configure Emacs
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04 May 2020, Pintaudi Giorgio, Forum, API to read MIDAS format file
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> (But note that back when I implemented the SQLITE history writer, sqlite database corruption
> recovery instructions were "delete the file, restore from backup". And indeed in every test
> experiment I tried, the sqlite history databases eventually corrupted themselves. You see
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26 May 2020, Pintaudi Giorgio, Forum, API to read MIDAS format file
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Eventually, I have settled for the SQLite format.
I could convert the MIDAS history files .hst to SQLite
database .sqlite3 using the utility mh2sql.
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 09 Sep 2016, Amy Roberts, Suggestion, AJAX jmsg "get messages since t" ability - add to docs?
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I recently needed to watch the Midas messages for a particular error - and
thus needed a command to "get all the messages since a time t".
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09 Sep 2016, Suzannah Daviel, Suggestion, AJAX jmsg "get messages since t" ability - add to docs?
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> I recently needed to watch the Midas messages for a particular error - and
> thus needed a command to "get all the messages since a time t".
>
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30 Sep 2016, Konstantin Olchanski, Suggestion, AJAX jmsg "get messages since t" ability - add to docs?
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> I recently needed to watch the Midas messages for a particular error - and
> thus needed a command to "get all the messages since a time t".
>
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04 Nov 2008, Suzannah Daviel, Suggestion, <odb ... edit=1> buttons and javascript
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When writing custom webpages, it would be nice to be able to write code such as
<odb src="/Equipment/TITAN_ACQ/ppg cycle/trans3/time offset (ms)" edit=1>
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09 Nov 2008, Stefan Ritt, Suggestion, <odb ... edit=1> buttons and javascript
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> When writing custom webpages, it would be nice to be able to write code such as
>
> <odb src="/Equipment/TITAN_ACQ/ppg cycle/trans3/time offset (ms)" edit=1>
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25 Aug 2011, Francesco Prelz, Forum, 64-bit integer support in MIDAS
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Hi,
I've been doing some preliminary work to use at least the MIDAS
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05 Jan 2016, Tom Stuttard, Suggestion, 64 bit bank type
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I've seen that a similar question has been asked in 2011 but I'll ask again in
case there are any updates. Is there any way to write 64-bit data words to MIDAS
banks (other than breaking them up in to two 32-bit words, such as 2 DWORDs)
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05 Jan 2016, Konstantin Olchanski, Suggestion, 64 bit bank type
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> I've seen that a similar question has been asked in 2011 but I'll ask again in
> case there are any updates. Is there any way to write 64-bit data words to MIDAS
> banks (other than breaking them up in to two 32-bit words, such as 2 DWORDs)
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15 Jan 2016, Tom Stuttard, Suggestion, 64 bit bank type
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> > I've seen that a similar question has been asked in 2011 but I'll ask again in
> > case there are any updates. Is there any way to write 64-bit data words to MIDAS
> > banks (other than breaking them up in to two 32-bit words, such as 2 DWORDs)
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19 Jan 2016, Tom Stuttard, Suggestion, 64 bit bank type
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> > I've seen that a similar question has been asked in 2011 but I'll ask again in
> > case there are any updates. Is there any way to write 64-bit data words to MIDAS
> > banks (other than breaking them up in to two 32-bit words, such as 2 DWORDs)
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15 Jun 2021, Konstantin Olchanski, Info, 1000 Mbytes/sec through midas achieved!
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I am sure everybody else has 10gige and 40gige networks and are sending terabytes of data before breakfast.
Myself, I only have one computer with a 10gige network link and sufficient number of daq boards to fill
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15 Jun 2021, Stefan Ritt, Info, 1000 Mbytes/sec through midas achieved!
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In MEG II we also kind of achieved this rate. Marco F. will post an entry soon to describe the details. There is only one thing
I want to mention, which is our network switch. Instead of an expensive high-grade switch, we chose a cheap "Chinese" high-grade
switch. We have "rack switches", which are collector switch for each rack receiving up to 10 x 1GBit inputs, and outputting 1 x
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16 Jun 2021, Marco Francesconi, Info, 1000 Mbytes/sec through midas achieved!
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As reported by Stefan, in MEG II we have very similar ethernet throughputs.
In total, we have 34 crates each with 32 DRS4 digitiser chips and a single 1 Gbps readout link through a Xilinx Zynq SoC.
The data arrives in push mode without any external intervention, the only throttling being an optional prescaling on the trigger rate.
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18 Jun 2021, Konstantin Olchanski, Info, 1000 Mbytes/sec through midas achieved!
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> In MEG II we also kind of achieved this rate.
>
> Instead of an expensive high-grade switch, we chose a cheap "Chinese" high-grade switch.
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