 14 Oct 2019, Joseph McKenna, Forum, tmfe.cxx - Future frontend design
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Hi,
I have been looking at the 2019 workshop slides, I am interested in the C++ future of MIDAS.
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06 Oct 2019, Nik Berger, Bug Report, History data size mismatch
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Logging a list of variables to the history via links in the history ODB subtree,
we get messages as follows at every run start:
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 06 Oct 2019, Stefan Ritt, Bug Report, History data size mismatch
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I wonder why do you this via ODB links. The "standard" way of writing to the history should be to create events for an equipment and flag this equipment
as being written to the
history. All variables under /Equipment/<name>/Variables then automatically go into the history and you don't have to worry about ODB links. Only variables |
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10 Oct 2019, Konstantin Olchanski, Bug Report, History data size mismatch
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>
> In our history, a long list of doubles (64 Bit) fas followed by three floats (32 bit)
>
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10 Oct 2019, Nik Berger, Bug Report, History data size mismatch
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>I wonder why do you this via ODB links. The "standard" way of writing to the history should be to create events for an equipment and flag this equipment
as being written to the
>history. All variables under /Equipment/<name>/Variables then automatically go into the history and you don't have to worry about ODB links. Only variables |
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10 Oct 2019, Stefan Ritt, Bug Report, History data size mismatch
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> Yes, we could have
> kept that apart, yes, in this case a double would also work (and not break things), but a bug is a bug...
> I could think of senisble use cases where doubles and ints are mixed and I also know quite a few areas where it makes
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28 Sep 2019, Pintaudi Giorgio, Forum, MIDAS interface for WAGASCI online monitor
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Hello!
This question is rather complex so please forgive me if I leave out some
details.
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29 Sep 2019, Thomas Lindner, Forum, MIDAS interface for WAGASCI online monitor
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Hi Pintaudi Giorgio,
I think that the ROOT THttpServer is an option. The ROOT tools are not perfect, but it is relatively easy to embed plots in custom MIDAS pages. I have |
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29 Sep 2019, Konstantin Olchanski, Forum, MIDAS interface for WAGASCI online monitor
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> online monitor would show (almost in real-time) the
> gain, the dark noise, and the pedestal for all the channels, the 2D tracks
> inside the detectors for each spill and so on.
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29 Sep 2019, Pintaudi Giorgio, Forum, MIDAS interface for WAGASCI online monitor
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Dear Thomas and Konstantin,
thank you very much for the feedback. I found the ROOTANA javascript display a good source of
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30 Sep 2019, Konstantin Olchanski, Forum, MIDAS interface for WAGASCI online monitor
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>
> As Thomas said, maybe the simplest thing would be to use the ROOT THttpServer. Honestly, I do
> not think that ROOT was ever meant to act as an online monitor due to its wacky memory
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17 Sep 2019, Richard Longland, Forum, mhttpd start and stop redirect to Transition page
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I recently upgraded to MIDAS version midas-2019-06-b. I had to make a few changes
to get our custom page running again, but am a little confused on starting and
stopping runs. When I click on my "Start" button, it now redirects to a
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27 Sep 2019, Konstantin Olchanski, Forum, mhttpd start and stop redirect to Transition page
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> I recently upgraded to MIDAS version midas-2019-06-b. I had to make a few changes
> to get our custom page running again, but am a little confused on starting and
> stopping runs.
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06 Sep 2019, Pintaudi Giorgio, Forum, Open a hotlink to a single element in an ODB array
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Hello!
Just a little question about the ODB hotlinks. Is it possible to open a hotlink
to a single element in and ODB array?
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16 Sep 2019, Konstantin Olchanski, Forum, Open a hotlink to a single element in an ODB array
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> Is it possible to open a hotlink to a single element in an ODB array?
Not possible.
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26 Sep 2019, Stefan Ritt, Forum, Open a hotlink to a single element in an ODB array
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[quote="Pintaudi Giorgio"]Hello!
Just a little question about the ODB hotlinks. Is it possible to open a hotlink
to a single element in and ODB array?[/quote]
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27 Sep 2019, Pintaudi Giorgio, Forum, Open a hotlink to a single element in an ODB array
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Thank you for the feedback.
I will try to use the db_watch function in the future.
I tried to look for more info about the db_watch function in the Wiki but I could not find much.
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27 Sep 2019, Konstantin Olchanski, Forum, Open a hotlink to a single element in an ODB array
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> I will try to use the db_watch function in the future.
Note that db_watch() and db_open_record() work exactly the same way, both only allow
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14 Aug 2019, Stefan Ritt, Info, New history plot facility 
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During my visit at TRIUMF we rewrote the history plotting functionality of midas. Instead of
static GIF images, we have now interactive JavaScript panels where we can scroll, zoom,
inspect values and much more (example is attached). We are now in a state where this is still
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06 Sep 2019, Andreas Suter, Info, New history plot facility
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I like the new history system very much, but I stumbled over a couple of issues.
I used the version "Thu Aug 29 08:24:29 2019 +0200 -
midas-2019-06-b-244-gdd6585bb on branch develop":
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06 Sep 2019, Stefan Ritt, Info, New history plot facility
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> 1) it would be nice to have an option to format the label output (see attachment 1)
That's clearly a bug, I will fix it.
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06 Sep 2019, Andreas Suter, Info, New history plot facility
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> > 2) the background of a history plot is very handy if you only show one measure.
> > If you have multiple ones (see attachment 2), this is not the case anymore. It
> > would be nice if the background could be enabled/disabled.
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07 Sep 2019, Stefan Ritt, Info, New history plot facility
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> This I found out, yet the attachment here shows another case where it would be useful to be
> able to disable the background, namely if you have positive and negative measures in one
> plot. Somehow it suggests that CH1 and CH2 show very different values, whereas it is only a
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08 Sep 2019, Stefan Ritt, Info, New history plot facility
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> 1) it would be nice to have an option to format the label output (see attachment 1)
I fixed that in the current version.
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10 Sep 2019, Andreas Suter, Info, New history plot facility
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Our typical use case is that a lot of people are connected to the experiment
having some history tabs open most of the time. Hence, I setup a test system and
connect to it from all kind of systems/browsers. What I see currently quite
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16 Sep 2019, Konstantin Olchanski, Info, New history plot facility
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> I see currently quite often is the error hs_read_arraybuffer (see the
attachement).
> Are there ways to get a log which would document where the problems
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17 Sep 2019, Andreas Suter, Info, New history plot facility
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> On the mhttpd side, please capture the stack trace from the crash: enable
> core dumps (ODB "/experiment/enable core dumps" set to "y", after the crash,
> run "ls -l core.*; gdb mhttpd core.9999") or run mhttpd inside gdb or attach
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17 Sep 2019, Konstantin Olchanski, Info, New history plot facility
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> > On the mhttpd side, please capture the stack trace from the crash
>
> here comes the stack trace (only happens when using safari 12.1.2 macOS 10.14.6):
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16 Sep 2019, Konstantin Olchanski, Info, New history plot facility
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> During my visit at TRIUMF we rewrote the history plotting functionality of midas.
This is a most amazing achievement. We wanted to do this "for years" and I think we have
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16 Sep 2019, Stefan Ritt, Info, New history plot facility
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> Also the new system is still incomplete, i.e. there is no trivial way to save a history plot into a file:
That has been implemented in meantime. Just click on the download arrow and you can save the current window in CSV or PNG format.
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08 Sep 2019, Vinzenz Bildstein, Bug Report, https redirect and ODB access
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I'm not sure if these issues are related or not, but I'm getting an error
message when I want to access the root of the ODB via the webserver:
[mhttpd,ERROR] [mhttpd.cxx:563:rread,ERROR] Cannot read file '/root', read of
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16 Sep 2019, Konstantin Olchanski, Bug Report, https redirect and ODB access
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> I'm not sure if these issues are related or not, but I'm getting an error
> message when I want to access the root of the ODB via the webserver:
> [mhttpd,ERROR] [mhttpd.cxx:563:rread,ERROR] Cannot read file '/root', read of
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07 Feb 2019, Stefan Ritt, Info, History panels in custom pages
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A new tag has been implemented to display history panels in custom pages, integrated in the
new custom page design from 2017. The full documentation can be found at
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08 Feb 2019, Thomas Lindner, Info, History panels in custom pages
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> A new tag has been implemented to display history panels in custom pages, integrated in the
> new custom page design from 2017. The full documentation can be found at
>
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12 Sep 2019, Pintaudi Giorgio, Info, History panels in custom pages
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> > A new tag has been implemented to display history panels in custom pages, integrated in the
> > new custom page design from 2017. The full documentation can be found at
> >
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12 Sep 2019, Stefan Ritt, Info, History panels in custom pages
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Indeed there was a bug in some JavaScript code, which I fixed here: https://bitbucket.org/tmidas/midas/commits/d2b1a783240e252820c622001e15c09c5d7798c0
Note that your code will bring you the "old style" history panels (with GIF images). If you want the new style (interactive canvas panels), you need the |
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13 Sep 2019, Pintaudi Giorgio, Info, History panels in custom pages
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Dear Stefan,
thank you very much for the prompt reply. Your suggestions worked wonderfully. Now I can display all the plots that I want where I want.
The new JavaScript history plots are really a huge improvement over the old ones.
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07 Aug 2019, Paolo Baesso, Bug Report, ROOTANA bug?
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Hi,
I posted on the ROOTANA elog but there seems to be little activity there...
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07 Aug 2019, Thomas Lindner, Bug Report, ROOTANA bug?
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Hi Paolo,
Sorry for the slow response. We were discussing this with Konstantin yesterday. He is aware of the problem now and will be working on a solution soon.
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08 Aug 2019, Lauren Manton, Bug Report, ROOTANA bug?
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Hi,
Thank you, commenting out the line worked and we can now compile the code. However, when we try to run ana.exe or anaDisplay.exe, we get the following |
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08 Aug 2019, Konstantin Olchanski, Bug Report, ROOTANA bug?
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> indnerlt:rootana lindner$ git diff libMidasInterface/TMidasOnline.cxx
> diff --git a/libMidasInterface/TMidasOnline.cxx b/libMidasInterface/TMidasOnline.cxx
> index 92eb3e9..67da613 100644
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14 Aug 2019, Konstantin Olchanski, Bug Report, ROOTANA bug?
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> - ss_suspend_set_dispatch_ipc(NULL);
> + // ss_suspend_set_dispatch_ipc(NULL);
>
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14 Aug 2019, Konstantin Olchanski, Bug Fix, incorrect recursion in ss_suspend() via the user event handler
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The ROOTANA midas analyzer uncovered a problem with recursive use of ss_suspend().
When running in graphical mode, the ROOT graphics main event loop was calling
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05 Aug 2019, Stefan Ritt, Info, Precedence of equipment/common structure
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Today I fixed a long-annoying problem. We have in each front-end an equipment structure
which defined the event id, event type, readout frequency etc. This is mapped to the ODB
subtree
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06 Aug 2019, Thomas Lindner, Info, Precedence of equipment/common structure
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Hi Stefan,
This change does not sound like a good idea to me. I think that this change will cause just as much confusion as before; probably more since you are changing |
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06 Aug 2019, Stefan Ritt, Info, Precedence of equipment/common structure
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Hi Thomas,
the change only affects Eqipment/<name>/common not the Equipment/<name>/Settings.
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06 Aug 2019, Stefan Ritt, Info, Precedence of equipment/common structure
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After some internal discussion, I decided to undo my previous change again, in order not to break existing habits. Instead, I created a new function
set_odb_equipment_common(equipment, name);
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09 Aug 2019, Konstantin Olchanski, Info, Precedence of equipment/common structure
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> Today I fixed a long-annoying problem. ...
> /Equipment/<name>/Common
> In the past, the ODB setting took precedence over the frontend structure...
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13 Aug 2019, Stefan Ritt, Info, Precedence of equipment/common structure
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> Lacking any ideas for improvements, I vote for the status quo. (plus a review of the documentation to ensure we have clearly
> written up what each entry in "common" does and whether the user is permitted to edit it in odb).
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22 Jul 2019, Hassan, Bug Report, Fetest History Plot
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Hi,
We've been trying to run Fetest in the attempt of plotting the sine wave data on
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24 Jul 2019, Pierre-Andre Amaudruz, Bug Report, Fetest History Plot
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> Hi,
>
> We've been trying to run Fetest in the attempt of plotting the sine wave data on
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26 Jul 2019, Hassan, Bug Report, Fetest History Plot
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Hi, our logger was running. I have tried restarting mlogger (even though we haven't
changed variable names). We ran the following commands one after another and still no
luck with history plot. Is there anything else that could be causing these problems?
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09 Aug 2019, Konstantin Olchanski, Bug Report, Fetest History Plot
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> Hi, our logger was running.
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09 Aug 2019, Konstantin Olchanski, Bug Report, Fetest History Plot
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> Hi, our logger was running.
Please do these simple tests:
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08 Aug 2019, Art Olin, Suggestion, midas cmake migration
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I want to report a bug in the ROOT build process that might be relevant to the midas implementation. I had an annoying failure to build root 6.18 (current
pro version) with a misleading error message about a fault in the root code. It turned out this was a cmake problem, and the error was from my cmake version
being older than 3.14, which is quite recent. Took a bit of searching to find this.
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08 Aug 2019, Stefan Ritt, Suggestion, midas cmake migration
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Each CMakeLists.txt should specify which version of CMake it requires. The MIDAS CMakeLists.txt requires CMake 3.1 or later.
We deliberately stayed away from fancy cutting edge CMake features in order to make midas easier to compile. On top of that,
midas is a much simpler package compared to root, so things are not so complicated.
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08 Aug 2019, Konstantin Olchanski, Suggestion, midas cmake migration
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> Each CMakeLists.txt should specify which version of CMake it requires. The MIDAS CMakeLists.txt requires CMake 3.1 or later.
> We deliberately stayed away from fancy cutting edge CMake features in order to make midas easier to compile. On top of that,
> midas is a much simpler package compared to root, so things are not so complicated.
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08 Aug 2019, Stefan Ritt, Suggestion, midas cmake migration
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I just tried CMake 3.1.0 and it worked with midas. So I believe all versions between 3.1.0 and 3.6.1 are ok.
Actually playing around with different versions I realized that 3.0.0 is also ok, so I changed the requirement of midas down to 3.0
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07 Aug 2019, Pintaudi Giorgio, Suggestion, ROOT and multi-threading
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Hello!
I am creating this thread to comment on an issue raised today during the MIDAS
workshop.
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21 May 2019, Thomas Lindner, Forum, MIDAS Workshop on Aug 7
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Dear MIDAS users,
We would like to announce a third MIDAS workshop at TRIUMF on Aug 7, 2019.
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03 Jul 2019, Thomas Lindner, Forum, MIDAS Workshop on Aug 7
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Dear MIDAS users,
Here's further information on the third MIDAS workshop:
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06 Aug 2019, Thomas Lindner, Forum, MIDAS Workshop on Aug 7
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Dear MIDAS users,
A final reminder about the MIDAS workshop tomorrow. A couple reminders/notes:
|
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04 Jul 2019, Lukas Gerritzen, Info, Limitations of MSL
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Hi,
I am missing a few features. Do any of the following exist and I have just
overlooked them?
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05 Jul 2019, Konstantin Olchanski, Info, Limitations of MSL
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> I am missing a few features.
MSL did not start out as a fully featured programming language.
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08 Jul 2019, Stefan Ritt, Info, Limitations of MSL
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Sure some existing scripting languages can be used, but they fall short of a few important items in larger experiments:
- they are typically run from a local terminal in the counting house. A remote observer of the experiment has no idea which script is running and at which |
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08 Jul 2019, Lukas Gerritzen, Info, Limitations of MSL
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Thank you two!
Actually, both solutions would allow me to fix my problem and I can see use cases for both. Having everything web-based is useful in bigger setups. However, |
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08 Jul 2019, Konstantin Olchanski, Info, Limitations of MSL
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> Konstantin, would you mind resurrecting and sharing the python code?
Not until September or later.
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09 Jul 2019, Stefan Ritt, Info, Limitations of MSL
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> Yes, this has been the way to do it for years...
Calling odbedit -c ... ist certainly not the most effective way, but it works. I just tried on my Mac and found that I can call odbedit about 150 times |
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08 Jul 2019, Konstantin Olchanski, Info, Limitations of MSL
|
Hi, Stefan, on second thought, I agree, I do not know of any scripting language implementation (packaged as a library or not) that
can store it's state in a file ("checkpoint the execution") and that can execute it's program "one line at a time", like the midas
sequencer does now. In the most severe case, one invocation of msequencer executes one line of the msl script.
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16 Jul 2019, Lukas Gerritzen, Info, Limitations of MSL
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Dear Stefan,
another thing which does not work is the comparison of floating point numbers.
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30 Jul 2019, Stefan Ritt, Info, Limitations of MSL
|
> Would it be possible to add something like the following?
> 343 if (!isdigit(value1_var[i]) && value1_var[i] != '.')
> 344 break;
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26 Jul 2019, Nik Berger, Bug Report, History/Endianness
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Hi,
I have a bank of floats with slow control values that I store to the history and
ODB. When reading the history, both in the webbrowser and with mhist, the floats
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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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08 Jul 2019, Vinzenz Bildstein, Bug Report, Frontend killed at stop of run
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I wrote a c++ frontend to read data from CAEN VX1730 digitizers which is used in
parallel with the GRIFFIN frontend to read out DESCANT.
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08 Jul 2019, Konstantin Olchanski, Bug Report, Frontend killed at stop of run
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> After a long overnight run to check that the frontend runs smoothly for a longer
> time, I stopped the run and the frontend was killed by midas.
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08 Jul 2019, Vinzenz Bildstein, Bug Report, Frontend killed at stop of run
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> run the frontend inside gdb and post the stack trace after the crash?
>
> if there is no crash (the program is stopped by exit()), you may need
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08 Jul 2019, Konstantin Olchanski, Bug Report, Frontend killed at stop of run
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> > run the frontend inside gdb and post the stack trace after the crash?
> >
> > if there is no crash (the program is stopped by exit()), you may need
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08 Jul 2019, Vinzenz Bildstein, Bug Report, Frontend killed at stop of run
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> > > run the frontend inside gdb and post the stack trace after the crash?
> > >
> > > if there is no crash (the program is stopped by exit()), you may need
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08 Jul 2019, Konstantin Olchanski, Bug Report, Frontend killed at stop of run
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> >
> > For SIGKILL, my gdb reports "Program terminated with signal SIGKILL, Killed." and there is no stack
> > trace. Is this what you see?
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08 Jul 2019, Vinzenz Bildstein, Bug Report, Frontend killed at stop of run
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> > >
> > > For SIGKILL, my gdb reports "Program terminated with signal SIGKILL, Killed." and there is no stack
> > > trace. Is this what you see?
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10 Jul 2019, Vinzenz Bildstein, Bug Report, Frontend killed at stop of run
|
> > > >
> > > > For SIGKILL, my gdb reports "Program terminated with signal SIGKILL, Killed." and there is no stack
> > > > trace. Is this what you see?
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10 Jul 2019, Konstantin Olchanski, Bug Report, Frontend killed at stop of run
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> ... finding a current midas.log file
On the "help" page, see "midas.log".
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11 Jul 2019, Vinzenz Bildstein, Bug Report, Frontend killed at stop of run
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> > ... finding a current midas.log file
>
> On the "help" page, see "midas.log".
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11 Jul 2019, Konstantin Olchanski, Bug Report, Frontend killed at stop of run
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> Wed Jul 10 06:23:58 2019 [mhttpd,ERROR] [system.c:4580:ss_recv_net_command,ERROR] timeout receiving network command header
> Wed Jul 10 06:23:58 2019 [mhttpd,ERROR] [midas.c:10322:rpc_client_call,ERROR] call to "fedescant" on "grsmid00.triumf.ca" RPC "rc_transition": timeout
waiting for reply
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16 Jul 2019, Konstantin Olchanski, Bug Report, a3818 and signals, Frontend killed at stop of run
|
Message from John M O'Donnell <odonnell@lanl.gov>
Folks,
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16 Jul 2019, Konstantin Olchanski, Bug Report, a3818 and signals, Frontend killed at stop of run
|
> Message from John M O'Donnell <odonnell@lanl.gov>
>
> the A3818 and MIDAS both used unix alarm signals, resulting in clashes.
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11 Jul 2019, Konstantin Olchanski, Bug Report, problems with the default mhttpd configuration
|
We installed recent mhttpd on a ubuntu machine and discovered a number of problems
with the default mhttpd settings.
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11 Jul 2019, Konstantin Olchanski, Bug Report, problems with the default mhttpd configuration, also elogd
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> It turns out that unlike CentOS-7, Ubuntu LTS 18.04 does not run a restrictive firewall
> and access to mhttpd ports 8080 and 8443 is not blocked
>
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11 Jul 2019, Konstantin Olchanski, Bug Report, rework of mhttpd configuration
|
> Ubuntu LTS 18.04 does not run a restrictive firewall and access to mhttpd ports 8080 and 8443 is not
blocked.
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11 Jul 2019, Stefan Ritt, Bug Report, rework of mhttpd configuration
|
> - this will activate the mhttpd password protection, so one would have to define a username and password
> in the .htdigest file (this is done by the mongoose web server library).
|
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12 Jul 2019, Konstantin Olchanski, Bug Report, rework of mhttpd configuration
|
> > - this will activate the mhttpd password protection, so one would have to define a username and password
> > in the .htdigest file (this is done by the mongoose web server library).
>
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