 10 Jun 2020, Konstantin Olchanski, Info, Preparing the VME hardware - VME address jumpers.
|
Hi, if you are not using any VME hardware, then you have no VME address jumpers to
set. https://en.wikipedia.org/wiki/VMEbus
|
|
10 Jun 2020, Konstantin Olchanski, Forum, slow-control equipment crashes when running multi-threaded on a remote machine
|
Yes, it is supposed to crash. On a remote frontend, cm_get_path() cannot be used
(we are on a different computer, all filesystems maybe no the same!) and is actually not set and
triggers a trap if something tries to use it. (this is the crash you see).
|
 28 Jun 2020, Konstantin Olchanski, Info, mhttpd https support openssl -> mbedtls
|
For password protection of midas web pages, https is required, good old http
with passwords transmitted in-the-clear is no longer considered secure. Latest
recommendation is to run mhttpd behind an industry-standard https proxy, for
|
|
28 Jun 2020, Konstantin Olchanski, Info, mhttpd https support openssl -> mbedtls
|
To add. Using https with either openssl or mbedtls requires obtaining an https certificate. This can be self-
signed, or signed by a higher authority, or issued by the "let's encrypt" project.
|
|
28 Jun 2020, Konstantin Olchanski, Info, Makefile update
|
I reworked the MIDAS Makefile to simplify things and to remove redundancy with functions
provided by cmake.
|
|
07 Aug 2020, Konstantin Olchanski, Info, update of MYSQL history documentation
|
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
|
|
11 Aug 2020, Konstantin Olchanski, Bug Report, data missing in runXXXXXX.mid
|
> I have to reproduce the problem to fix it. Why don't you go and modify midas/examples/experiment/frontend.cxx in such a way that
> it creates exactly the banks you have, just with random data. If you see the same problem, send me your frontend file so that I
> can reproduce it.
|
|
24 Aug 2020, Konstantin Olchanski, Forum, History plot problems for frontend with multiple indicies
|
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.
|
|
24 Aug 2020, Konstantin Olchanski, Release, midas-2020-12
|
midas-2020-12-a is here.
new features and notable updates since midas-2020-03: |
|
08 Sep 2020, Konstantin Olchanski, Forum, json parser error
|
> 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", |
|
08 Sep 2020, Konstantin Olchanski, Forum, Transition status message
|
> > 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.
|
|
22 Sep 2020, Konstantin Olchanski, Forum, INT INT32 in experim.h
|
> For my analyzer I generate the experim.h file from the odb.
>
> Before midas commit 13c3b2b this generates structs with INT data types. compiles fine with my analysis code (using the old mana.cpp)
|
|
06 Oct 2020, Konstantin Olchanski, Forum, using python client to start and stop run
|
> 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.
|
|
13 Oct 2020, Konstantin Olchanski, Info, About remote control of front end part of MIDAS on chip
|
> 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.
|
|
27 Nov 2020, Konstantin Olchanski, Suggestion, ODBSET wildcards with array keys in Sequencer files
|
> The following all fail with "Cannot find ODB key "<key>""
>
> ODBSET "/Detectors/Det*/Settings/Charge/Bias (V)[*]" 0
|
|
27 Nov 2020, Konstantin Olchanski, Forum, Invalid name "Analyzer/Tests"
|
> 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.
|
|
27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
|
>
> Tested with midas-2020-08-a up until the HEAD of develop
>
|
|
27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
|
>
> With the current code, we are limited to loading history data up to 50% of
> the javascript memory limit.
|
|
27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
|
>
> Are you sure that the delay comes from the browser or actually from mhttpd
> digging through GBytes of history data?
|
|
27 Nov 2020, Konstantin Olchanski, Forum, History plot consuming too much memory
|
>
> 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.
|