 18 Dec 2020, Stefan Ritt, Suggestion, Code formatting 
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May I ask for your quick opinion on code formatting. MIDAS had a coding style
which pretty much followed the ROOT coding style described at
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 04 Jan 2021, Stefan Ritt, Suggestion, Code formatting
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After pondering over the holidays, I decided to use the widely used LLVM code formatting,
just adapted slightly for 3 spaces and "case" indentation in a "switch" statement. This
formatting is now very close to our original one. Nevertheless, I did not reformat all
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16 Dec 2020, Isaac Labrie Boulay, Forum, Issues building banks.
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Hi all,
I'm currently trying to build events through doing block transfers. The worry was
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16 Dec 2020, Konstantin Olchanski, Forum, Issues building banks.
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> I'm currently trying to build events through doing block transfers.
I am confused by your question. I assume you read a CAEN V792 ADC, but I do not know what VME master you
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16 Dec 2020, Isaac Labrie Boulay, Forum, Issues building banks.
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Thanks for the quick reply,
> > I'm currently trying to build events through doing block transfers.
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16 Dec 2020, Konstantin Olchanski, Forum, Issues building banks.
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> > > I'm currently trying to build events through doing block transfers.
> >
> > I am confused by your question. I assume you read a CAEN V792 ADC, but I do not know what VME master you
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16 Dec 2020, Isaac Labrie Boulay, Forum, Issues building banks.
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> > > > I'm currently trying to build events through doing block transfers.
> > >
> > > I am confused by your question. I assume you read a CAEN V792 ADC, but I do not know what VME master you
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16 Dec 2020, Stefan Ritt, Forum, Issues building banks.
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> This is very hard to do using the mfe.c frontend. (the main reason I wrote the TMFE C++ frontend class).
Actually that's not true. Just look at
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16 Dec 2020, Isaac Labrie Boulay, Forum, Issues building banks.
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> > This is very hard to do using the mfe.c frontend. (the main reason I wrote the TMFE C++ frontend class).
>
> Actually that's not true. Just look at
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24 Nov 2020, Isaac Labrie Boulay, Forum, Invalid name "Analyzer/Tests"
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Hi everyone,
I've recently took the analyzer template from $MIDASSYS/examples/experiment and
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27 Nov 2020, Konstantin Olchanski, Forum, Invalid name "Analyzer/Tests"
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> I've recently took the analyzer template from $MIDASSYS/examples/experiment and
> modified it to be able to use Roody on a very simple frontend setup.
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27 Nov 2020, Konstantin Olchanski, Forum, Invalid name "Analyzer/Tests"
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https://bitbucket.org/tmidas/midas/issues/298/invalid-odb-names-in-example-midas
K.O. |
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07 Dec 2020, Isaac Labrie Boulay, Forum, Invalid name "Analyzer/Tests"
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> https://bitbucket.org/tmidas/midas/issues/298/invalid-odb-names-in-example-midas
> K.O.
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24 Sep 2020, Gennaro Tortone, Forum, subrun
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Hi,
I was wondering if there is a "mechanism" to run an executable
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01 Dec 2020, Stefan Ritt, Forum, subrun
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There is no "mechanism" foreseen to be executed after each subrun. But you could
run a shell script after each run which loops over all subruns and converts them
one after the other.
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01 Dec 2020, Ben Smith, Forum, subrun
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We use the lazylogger for something similar to this. You can specify the path to a custom script, and it will be run for each midas file that gets written:
https://midas.triumf.ca/MidasWiki/index.php/Lazylogger#Using_a_script
This means that you don't have to wait until the end of the run to start processing.
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30 Nov 2020, Konstantin Olchanski, Info, more wisdom from linux kernel people
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As you may know, I am a big fan of two software projects - the linux kernel and ROOT. The linux kernel is one of
the few software projects "done right". ROOT is where normal people try to "get it right" with real-world level
of success. I use both softwares daily and I try to apply their ways and methods to MIDAS as much as I can.
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24 Nov 2020, Amy Roberts, Suggestion, ODBSET wildcards with array keys in Sequencer files
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I'm interested in using the matching feature for ODBSET explained on
https://midas.triumf.ca/MidasWiki/index.php/Sequencer for settings that are in an
array, like:
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25 Nov 2020, Marco Francesconi, Suggestion, ODBSET wildcards with array keys in Sequencer files
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Hi,
I guess the issue is in the "[?]" part of the command, the indexing is handled differently from the odb path and does not
support "?".
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25 Nov 2020, Amy Roberts, Suggestion, ODBSET wildcards with array keys in Sequencer files
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The following all fail with "Cannot find ODB key "<key>""
ODBSET "/Detectors/Det*/Settings/Charge/Bias (V)[*]" 0
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25 Nov 2020, Marco Francesconi, Suggestion, ODBSET wildcards with array keys in Sequencer files
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I created some keys in my ODB to try to match yours.
The ODBSET commands you wrote are all working fine (of course with different results), except only for the "/Detectors/Det*/Settings/Charge/Bias (V)*"
which I will have to
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25 Nov 2020, Amy Roberts, Suggestion, ODBSET wildcards with array keys in Sequencer files
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I think the issue may be the version of MIDAS I'm using. Mine is current as of February 4, 2020.
But since then there have been changes to the sequencer code, specifically parts that handle indexing.
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27 Nov 2020, Konstantin Olchanski, Suggestion, ODBSET wildcards with array keys in Sequencer files
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> The following all fail with "Cannot find ODB key "<key>""
>
> ODBSET "/Detectors/Det*/Settings/Charge/Bias (V)[*]" 0
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30 Nov 2020, Marco Francesconi, Suggestion, ODBSET wildcards with array keys in Sequencer files
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I totally agree that we should have a consistent formatting for array index expansion.
I had a look to the mjsonrpc code and I found the function parse_array_index_list(...) which does this job.
I have a similar function (adapted form previous code) in odb.cxx called strarrayindex(...) that is designed for the same "consistency" purposes between |
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30 Nov 2020, Konstantin Olchanski, Suggestion, ODBSET wildcards with array keys in Sequencer files
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> I totally agree that we should have a consistent formatting for array index expansion.
> I had a look to the mjsonrpc code and I found the function parse_array_index_list(...) which does this job.
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30 Nov 2020, Stefan Ritt, Suggestion, ODBSET wildcards with array keys in Sequencer files
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Hi Konstantin,
we are considering to make the range selection uniform among json, sequencer and
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30 Nov 2020, Konstantin Olchanski, Suggestion, ODBSET wildcards with array keys in Sequencer files
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>
> we are considering to make the range selection uniform among json, sequencer and
> odbedit "set" command. Having multiple ranges like [1,4-5] will be quite some work, so
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17 Nov 2020, Stefan Ritt, Info, Equipment "common" settings in ODB
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Today I addressed a topic which bugged me since long time. The ODB contains
settings under /Equipment/<name>/Common which are a "mirror" of the equipment[]
setting in a frontend (using the mfe.cxx framework). If the "Common" entry in
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20 Nov 2020, Pierre-Andre Amaudruz, Info, Equipment "common" settings in ODB
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Indeed this "mirror" of the ODB in settings option can cause frustration in
particular when we think the ODB is empty but is not.
In the other hand, over time the settings are adjusted to a particular
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27 Nov 2020, Konstantin Olchanski, Info, Equipment "common" settings in ODB
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> Today I addressed a topic which bugged me since long time.
Right. No easy subject. For me, too, this has been a problem in MIDAS for a long time.
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27 Nov 2020, Stefan Ritt, Info, Equipment "common" settings in ODB
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Ok, so what about the following proposal:
- I change back the mfe.cxx code to behave like before (ODB has precedence and does not get overwritten when the
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27 Nov 2020, Konstantin Olchanski, Info, Equipment "common" settings in ODB
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Yes, I think this will work.
For old mfe.c frontends, global variable set to "do it the new way" should be okey,
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30 Nov 2020, Stefan Ritt, Info, Equipment "common" settings in ODB
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Ok, I implemented it the following way:
- Added a boolean flag "equipment_common_overwrite", which must be contained in EACH frontend, preferably just
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30 Nov 2020, Stefan Ritt, Info, Equipment "common" settings in ODB
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One more change:
After using the new code for some hours, we realized that the "enabled" flag should not come from the frontend code,
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30 Nov 2020, Konstantin Olchanski, Info, Equipment "common" settings in ODB
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> One more change:
>
> After using the new code for some hours, we realized that the "enabled" flag should not come from the frontend code,
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06 Nov 2020, Alexandr Kozlinskiy, Suggestion, cmake build fixes
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hi,
there are several problems with current cmake build files in midas:
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27 Nov 2020, Konstantin Olchanski, Suggestion, cmake build fixes
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Hi, Alexandr, thank you for making improvements to MIDAS. I have some question
about your suggestions:
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05 Nov 2020, Isaac Labrie Boulay, Forum, Building an experiment using CAEN VME interface - unknown type name 'VARIANT_BOOL'
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Hi everyone,
I have been building an experiment using the v1718 CAEN interface to talk to my modules and I am using the CAENVMElib Linux Library (2.50). I've managed |
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05 Nov 2020, Pierre-Andre Amaudruz, Forum, Building an experiment using CAEN VME interface - unknown type name 'VARIANT_BOOL'
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Hi,
You're building under Linux like. You want to define the LINUX and skip the VARIANT_BOOL all together.
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06 Nov 2020, Isaac Labrie Boulay, Forum, Building an experiment using CAEN VME interface - unknown type name 'VARIANT_BOOL'
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Yes, you are right. That fixed it and my frontend is compiling.
Thanks Pierre-Andre.
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27 Nov 2020, Konstantin Olchanski, Forum, Building an experiment using CAEN VME interface - unknown type name 'VARIANT_BOOL'
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>
> The header file used to defined the CAEN types (CAENVMEtypes.h) defines 'CAEN_BOOL' like this:
>
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19 Nov 2020, Joseph McKenna, Forum, History plot consuming too much memory
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A user reported an issue that if they were to plot some history data from
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19 Nov 2020, Stefan Ritt, Forum, History plot consuming too much memory
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The history code is right now programmes in such a way that when you request
an old time window, then all data from that window until the present date
gets loaded. When we implemented that, this worked fine for data ranges of
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20 Nov 2020, Joseph McKenna, Forum, History plot consuming too much memory
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Poking at the behavior of this, its fairly clear the slow response is from the data
being loaded off an HDD, when we upgrade this system we will allocate enough SSD
storage for the histories.
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20 Nov 2020, Stefan Ritt, Forum, History plot consuming too much memory
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> Taking this down a tangent, I have a mild concern that a user could temporarily
> flood our gigabit network if we do have faster disks to read the history data. Have
> there been any plans or thoughts on limiting the bandwidth users can pull from
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27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
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>
> Taking this down a tangent, I have a mild concern that a user could temporarily
> flood our gigabit network if we do have faster disks to read the history data.
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27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
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>
> Are you sure that the delay comes from the browser or actually from mhttpd
> digging through GBytes of history data?
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27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
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>
> Tested with midas-2020-08-a up until the HEAD of develop
>
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27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
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>
> With the current code, we are limited to loading history data up to 50% of
> the javascript memory limit.
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13 Oct 2020, Soichiro Kuribayashi, Info, About remote control of front end part of MIDAS on chip
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Hello!
My name is Soichiro Kuribayashi and I am a Ph.D. student at Kyoto University.
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13 Oct 2020, Konstantin Olchanski, Info, About remote control of front end part of MIDAS on chip
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> My name is Soichiro Kuribayashi and I am a Ph.D. student at Kyoto University.
> I'm a T2K collaborator and working for Super FGD which is new detector in ND280.
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13 Oct 2020, Soichiro Kuribayashi, Info, About remote control of front end part of MIDAS on chip
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Dear Konstantin,
Thank you very much for your reply and detailed information.
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20 Oct 2020, Stefan Ritt, Info, About remote control of front end part of MIDAS on chip
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We also use a Zynq chip and boot in the following order:
1. SD Card
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21 Oct 2020, Soichiro Kuribayashi, Info, About remote control of front end part of MIDAS on chip
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Dear Stefan,
Thank you very much for your help.
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29 Sep 2020, Amy Roberts, Forum, using python client to start and stop run
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I'm using a python client to start and stop runs, and the following code *appears*
to set the MIDAS state to "Run"
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29 Sep 2020, Ben Smith, Forum, using python client to start and stop run
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The ODB variable "/Runinfo/State" is a symptom of starting/stopping a run, rather than the cause.
In C++, one uses `cm_transition()` to start/stop runs.
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06 Oct 2020, Konstantin Olchanski, Forum, using python client to start and stop run
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> The ODB variable "/Runinfo/State" is a symptom of starting/stopping a run, rather than the cause.
>
> In C++, one uses `cm_transition()` to start/stop runs.
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02 Sep 2020, Ruslan Podviianiuk, Forum, Transition status message
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Hello,
I got an error after start of run and it would be good to show this error (or
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02 Sep 2020, Ben Smith, Forum, Transition status message
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The information you want is in the ODB:
* "/System/Transition/status" is the overall integer status code.
* "/System/Transition/error" is the overall error message string.
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02 Sep 2020, Ruslan Podviianiuk, Forum, Transition status message
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> The information you want is in the ODB:
> * "/System/Transition/status" is the overall integer status code.
> * "/System/Transition/error" is the overall error message string.
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08 Sep 2020, Konstantin Olchanski, Forum, Transition status message
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> > The information you want is in the ODB:
> > * "/System/Transition/status" is the overall integer status code.
> > * "/System/Transition/error" is the overall error message string.
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08 Sep 2020, Ruslan Podviianiuk, Forum, Transition status message
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> > > The information you want is in the ODB:
> > > * "/System/Transition/status" is the overall integer status code.
> > > * "/System/Transition/error" is the overall error message string.
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08 Sep 2020, Zaher Salman, Forum, json parser error
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I am getting the following error alert in a custom page whenever a run starts
json parser exception: SyntaxError: Unexpected token < in JSON at position 985, batch request: method: "db_get_values", params: [object Object], id: 1598691925697 |
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08 Sep 2020, Konstantin Olchanski, Forum, json parser error
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> I am getting the following error alert in a custom page whenever a run starts
> json parser exception: SyntaxError: Unexpected token < in JSON at position 985, batch request: method: "db_get_values", params: [object Object], id:
1598691925697 method: "get_alarms", params: null, id: 1598691925697 method: "cm_msg_retrieve", params: [object Object], id: 1598691925697 method: "cm_msg_retrieve", |
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21 Aug 2020, Ruslan Podviianiuk, Forum, time information
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Hello,
I have a few questions about time information:
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24 Aug 2020, Stefan Ritt, Forum, time information
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> 1. Is it possible to get "Running time" using, for example, jsonrpc? (please see
> the attached file)
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25 Aug 2020, Ruslan Podviianiuk, Forum, time information
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Thank you, Stefan
Ruslan
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24 Aug 2020, Konstantin Olchanski, Release, midas-2020-12
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midas-2020-12-a is here.
new features and notable updates since midas-2020-03: |
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28 Aug 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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Hello experts,
I have been writing a SC frontend for a powersupply. I have used the model
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28 Aug 2019, Stefan Ritt, Forum, History plot problems for frontend with multiple indicies
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My first question would be why are you using several font-ends at all? That makes things more
complicated than needed. In the normal FE framework, you can define either several equipment
served by one frontend, or even one equipment linked to several devices. In the MEG experiment
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28 Aug 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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Hi Stefan,
thanks for you quick reply.
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28 Aug 2019, lcp, Forum, History plot problems for frontend with multiple indicies
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hi,
> > That makes things more
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16 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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> it's probably better to run a multi-threaded setup, than individual frontends.
I recommend against using multiple threads if at all possible and unless absolutely required.
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16 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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> My first question would be why are you using several font-ends at all? That makes things more
> complicated than needed. In the normal FE framework, you can define either several equipment
> served by one frontend, or even one equipment linked to several devices.
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29 Aug 2019, Ben Smith, Forum, History plot problems for frontend with multiple indicies
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Hi Nick,
I confirm that this issue appears when using the MIDAS history driver. The issue does not appear when using the MYSQL history driver.
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01 Sep 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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Hi Ben,
thanks for your reply. I can confirm that your suggested workaround does indeed
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16 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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> thanks for your reply. I can confirm that your suggested workaround does indeed
> make the problem dissapear.
> I guess this issue hasn't been seen at T2K since we use MYSQL for the history.
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16 Sep 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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Hi Konstantin,
thanks for your reply.
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17 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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> [local:e666:S]History>ls -l /History/Events
> Key name Type #Val Size Last Opn Mode Value
> ---------------------------------------------------------------------------
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18 Sep 2019, Nick Hastings, Forum, History plot problems for frontend with multiple indicies
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Hi Konstantin,
> > [local:e666:S]History>ls -l /History/Events
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27 Sep 2019, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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We should fix this for midas-2019-10.
https://bitbucket.org/tmidas/midas/issues/193/confusion-in-history-event-ids
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24 Aug 2020, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
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This turned out to be a tricky problem. I am adding a warning about it in mlogger. This should go into midas-
2020-07. Closing bug #193. K.O.
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12 Aug 2020, Yan Liu, Suggestion, adding db_get_mode ti check access mode for keys
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Hello,
I am wondering if there is a function that checks the access mode for a key? I
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13 Aug 2020, Stefan Ritt, Suggestion, adding db_get_mode ti check access mode for keys
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> Hello,
>
> I am wondering if there is a function that checks the access mode for a key? I
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13 Aug 2020, Yan Liu, Suggestion, adding db_get_mode ti check access mode for keys
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Thank you!
Yan
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07 Aug 2020, Konstantin Olchanski, Info, update of MYSQL history documentation
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I updated the documentation for setting up a MYSQL (MariaDB) database for
recording MIDAS history: https://midas.triumf.ca/MidasWiki/index.php/History_System#Write_MYSQL-history_events
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15 Jul 2020, Stefan Ritt, Info, Minimal CMakeLists.txt for your midas front-end
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Since a few people asked me, here is a "minimal" CMakeLists.txt file for a user-written front-end
program "myfe":
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