 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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18 Jun 2021, Konstantin Olchanski, Info, 1000 Mbytes/sec through midas achieved!
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> ... MEG II ... 34 crates each with 32 DRS4 digitiser chips and a single 1 Gbps readout link through a Xilinx Zynq SoC.
>
> Zynq ... embedded ethernet MAC does not support jumbo frames (always read the fine prints in the manuals!)
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18 Jun 2021, Konstantin Olchanski, Info, Add support for rtsp camera streams in mlogger (history_image.cxx)
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> mlogger (history_image) now supports rtsp cameras
my goodness, we will drive the video surveillance industry out of business.
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 09 Jul 2021, Konstantin Olchanski, Info, cannot push to bitbucket
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the day has arrived when I cannot git push to bitbucket. cloud computing rules!
I have never seen this error before and I do not think we have any hooks installed,
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11 Jul 2021, Konstantin Olchanski, Info, midas cmake update
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I reworked the midas cmake files:
- install via CMAKE_INSTALL_PREFIX should work correctly now:
- installed are bin, lib and include - everything needed to build against the midas library
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13 Jul 2021, Stefan Ritt, Info, MidasConfig.cmake usage
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Thanks for the contribution of MidasConfig.cmake. May I kindly ask for one extension:
Many of our frontends require inclusion of some midas-supplied drivers and libraries
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13 Jul 2021, Konstantin Olchanski, Info, MidasConfig.cmake usage
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> $MIDASSYS/drivers/class/
> $MIDASSYS/drivers/device
> $MIDASSYS/mscb/src/
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11 Oct 2021, Stefan Ritt, Info, Modification in the history logging system
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A requested change in the history logging system has been made today. Previously, history values were
logged with a maximum frequency (usually once per second) but also with a minimum frequency, meaning
that values were logged for example every 60 seconds, even if they did not change. This causes a problem.
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26 Jan 2022, Konstantin Olchanski, Info, MityCAMAC Login
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For those curious about CAMAC controllers, this one was built around 2014 to
replace the aging CAMAC A1/A2 controllers (parallel and serial) in the TRIUMF
cyclotron controls system (around 50 CAMAC crates). It implements the main
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23 Feb 2022, Stefan Ritt, Info, Midas slow control event generation switched to 32-bit banks
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The midas slow control system class drivers automatically read their equipment and generate events containing midas banks. So far these have been 16-bit
banks using bk_init(). But now more and more experiments use large amount of channels, so the 16-bit address space is exceeded. Until last week, there
was even no check that this happens, leading to unpredictable crashes.
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03 Mar 2022, Konstantin Olchanski, Info, zlib required, lz4 internal
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as of commit 8eb18e4ae9c57a8a802219b90d4dc218eb8fdefb, the gzip compression
library is required, not optional.
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03 Mar 2022, Konstantin Olchanski, Info, manalyzer updated
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manalyzer was updated to latest version. mostly multi-threading improvements from
Joseph and myself. K.O. |
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16 Mar 2022, Stefan Ritt, Info, New midas sequencer version
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A new version of the midas sequencer has been developed and now available in the
develop/seq_eval branch. Many thanks to Lewis Van Winkle and his TinyExpr library
(https://codeplea.com/tinyexpr), which has now been integrated into the sequencer
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22 Mar 2022, Stefan Ritt, Info, New midas sequencer version
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After several days of testing in various experiments, the new sequencer has
been merged into the develop branch. One more feature was added. The path to
the ODB can now contain variables which are substituted with their values.
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12 Apr 2022, Konstantin Olchanski, Info, ODB JSON support
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> > > > odbedit can now save ODB in JSON-formatted files.
> > encode NaN, Inf and -Inf as JSON string values "NaN", "Infinity" and "-Infinity". (Corresponding to the respective Javascript values).
> http://docs.oasis-open.org/odata/odata-json-format/v4.0/os/odata-json-format-v4.0-os.html
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13 Apr 2022, Stefan Ritt, Info, ODB JSON support
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> Per xkcd, there is a new json standard "json5". In addition to other things, numeric
> values NaN, +Infinity and -Infinity are encoded as literals NaN, Infinity and -Infinity (without quotes):
> https://spec.json5.org/#numbers
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13 Apr 2022, Konstantin Olchanski, Info, ODB JSON support
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> > Per xkcd, there is a new json standard "json5". In addition to other things, numeric
> > values NaN, +Infinity and -Infinity are encoded as literals NaN, Infinity and -Infinity (without quotes):
> > https://spec.json5.org/#numbers
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15 Apr 2022, Stefan Ritt, Info, New midas sequencer version 
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I prepared some slides about the new features of the sequencer and post it here so
people can have a quick look at get some inspiration.
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30 Apr 2022, Konstantin Olchanski, Info, added web pages for "show odb clients" and "show open records"
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for a long time, midas web pages have been missing the equivalent of odbedit
"scl" and "sor" to display current odb clients and current odb open records.
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01 May 2022, Konstantin Olchanski, Info, added web page for "mdump"
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added JSON RPC for bm_receive_event() and added a web page for "mdump".
the event dump is a hex dump for now.
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