 19 Feb 2018, Thomas Lindner, Suggestion, Rename sequencer program to msequencer
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Hi Folks,
In last year's updates to MIDAS, the MIDAS sequencer has been broken out as a
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 05 Mar 2018, Thomas Lindner, Suggestion, Rename sequencer program to msequencer
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Hearing no objections I changed the name of the program to msequencer. Wiki
documentation updated.
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28 Feb 2018, Thomas Lindner, Bug Report, Problems with start program button with new mhttpd webpages
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Pierre Gorel identified a problem with the 'start program' button on the new version of MIDAS that uses the
mjsonrpc functions for building the webpages. In particular, he tracked the problem down to some
questionable std::string / char* handling.
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01 Dec 2017, Frederik Wauters, Bug Report, small bug in mfe.c init
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There is a small bug in the mfe.c initialization for the EQ_POLLED mode. There
is a routine where the number of polls fitting in eq_info->period is counted:
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01 Dec 2017, Stefan Ritt, Bug Report, small bug in mfe.c init
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> There is a small bug in the mfe.c initialization for the EQ_POLLED mode. There
> is a routine where the number of polls fitting in eq_info->period is counted:
>
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04 Dec 2017, Frederik Wauters, Bug Report, small bug in mfe.c init
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> > There is a small bug in the mfe.c initialization for the EQ_POLLED mode. There
> > is a routine where the number of polls fitting in eq_info->period is counted:
> >
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04 Dec 2017, Stefan Ritt, Bug Report, small bug in mfe.c init
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> Thanks, I misunderstood the loop then. If poll_event(equipment[idx].info.source, (INT)count, TRUE); doesn`t do anything with "count", the loop becomes
infinite except for the overflow
> check.
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07 Sep 2016, Wes Gohn, Forum, ODB as JSON file
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Hi. Is it currently possible to automatically save the MIDAS ODB as a JSON file?
I can do it manually in odbedit, but it looks like the only option for the
automatic ODB save for each run is the standard .ODB format. Is there a way to
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07 Sep 2016, Stefan Ritt, Forum, ODB as JSON file
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> Hi. Is it currently possible to automatically save the MIDAS ODB as a JSON file?
> I can do it manually in odbedit, but it looks like the only option for the
> automatic ODB save for each run is the standard .ODB format. Is there a way to
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08 Sep 2016, Pierre-Andre Amaudruz, Forum, ODB as JSON file
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Hi,
We do generate a .json odb at the end of run in order to extract some of its info for our CouchDB.
This is done using the "/program/Execute on stop run" script command. This method decouples the necessity
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30 Sep 2016, Konstantin Olchanski, Forum, ODB as JSON file
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> Hi. Is it currently possible to automatically save the MIDAS ODB as a JSON file?
> I can do it manually in odbedit, but it looks like the only option for the
> automatic ODB save for each run is the standard .ODB format. Is there a way to
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21 Nov 2017, Konstantin Olchanski, Release, Pending release of midas
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We are readying a new release of midas and it is almost here except for a few buglets on the new html status page.
The current release candidate branch is "feature/midas-2017-10" and if you have problems with the older versions
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21 Nov 2017, Konstantin Olchanski, Info, MIDAS support on el5?
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It has been reported that the current midas release candidate does not build on el5 linux (SL/RHEL/CentOS-5).
According to Red Hat, el5 is end-of-life, last SL 5 (SL5.11) was done in 2014, so this linux is very old. Also as it happens, I do not have access to any |
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10 Nov 2017, Frederik Wauters, Bug Report, bug in init of hv class driver
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bug in init
-----------
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17 Nov 2017, Konstantin Olchanski, Bug Report, bug in init of hv class driver
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Hi, Frederick, this is my personal opinion on the slow controls hv classes, I have
used them a couple of times and I found them full of little buglets like this,
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21 Nov 2017, Stefan Ritt, Bug Report, bug in init of hv class driver
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> bug in init
> -----------
>
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21 Nov 2017, Konstantin Olchanski, Bug Report, bug in init of hv class driver
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>
> The original idea behind the hv driver is that all voltages in the ODB and the class driver are
> positive. If you have a negative power supply, then the voltage is inverted at the device
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15 Nov 2017, Andreas Knecht, Suggestion, Feature request: Separate ODB flag to show programs on "Programs page"
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Currently one has to set the required flag in the ODB (e.g., /Programs/Logger/Required) to "y" for the program
to appear on the "Programs page" and being able to start and stop the program easily.
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17 Nov 2017, Konstantin Olchanski, Suggestion, Feature request: Separate ODB flag to show programs on "Programs page"
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> Currently one has to set the required flag in the ODB (e.g., /Programs/Logger/Required) to "y" for the program
> to appear on the "Programs page" and being able to start and stop the program easily.
>
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21 Nov 2017, Stefan Ritt, Suggestion, Feature request: Separate ODB flag to show programs on "Programs page"
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> > Currently one has to set the required flag in the ODB (e.g., /Programs/Logger/Required) to "y" for the program
> > to appear on the "Programs page" and being able to start and stop the program easily.
> >
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02 Nov 2017, Konstantin Olchanski, Bug Fix, Fixed mlogger memory corruption, updated mxml
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I the agdaq system I see memory corruption in the mlogger. There were at least two bugs: one
memory allocation error in mxml and one incorrect memset() in mlogger.cxx. The mxml bug is fixed
in the mxml repository, mlogger.cxx bug is fixed in the midas-2017-10 branch.
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13 Oct 2017, Konstantin Olchanski, Info, odb multithread support repaired
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multithreaded access to odb was implemented back in 2013-2014. but recently a bug surfaced -
there was a race condition in the odb locking code against cm_watchdog(). Somehow this only
affected the mserver for the DRAGON experiment at TRIUMF. This is now fixed on the branch
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11 Oct 2017, Konstantin Olchanski, Info, added support for ucLinux
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Support for building for ucLinux was added to MIDAS. I use the emcraft toolchain and userland on
some kind of embedded ARM CPU that does not have an MMU. See the Makefile for details. The
main difference of ucLinux is lack of fork(), which cannot be done without an MMU. Not everything
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27 Jul 2017, Wes Gohn, Suggestion, Increasing Max Number of Frontends
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Below are the steps we used to increase the maximum number of frontends that we could run.
In midas.h
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10 Aug 2017, Stefan Ritt, Suggestion, Increasing Max Number of Frontends
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The sizeof checks were originally invented by KO to check for binary compatibility between processes attached to the same ODB and event buffers. So if a
compiler generates different structure sizes due to different padding, one would see that immediately. I wonder however if the absolute numbers make sense |
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12 Aug 2017, Konstantin Olchanski, Suggestion, Increasing Max Number of Frontends
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The checks for byte sizes of critical data structures have been added to ensure (enforce) binary compatibility
of midas with itself on different platforms (32-bit and 64-bit intel, on PPC, on ARM, etc).
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13 Aug 2017, Stefan Ritt, Suggestion, Increasing Max Number of Frontends
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I agree that the binary compatibility checks are crucial. But I kind of find it strange if one gets an assert failure some where if one tries to change
MAX_CLIENTS. It is then not straight
forward to relate both things and understand the consequences. That's why I put a comment next to the definition of MAX_CLIENTS saying:
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13 Aug 2017, Konstantin Olchanski, Suggestion, Increasing Max Number of Frontends
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> if (sizeof(INT) != 4) then severe_error_and_stop_all_programs()
Quick reply.
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13 Aug 2017, Stefan Ritt, Suggestion, Increasing Max Number of Frontends
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The type INT has been defined in 1989 when I for the first time sent data between a 16-bit MS-DOS computer and a 32-bit VAX computer (good old
days!). At that time, uint32_t was not available at all. So much for the historical background.
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04 Aug 2017, Konstantin Olchanski, Info, Notes on installing midas from scratch
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Notes on installing midas from scratch. The instruction on midaswiki will be synced with this later.
cd ~/packages
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07 Aug 2017, Stefan Ritt, Info, Notes on installing midas from scratch
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Thanks for documenting this in detail. A few suggestions:
- is it really necessary to call odbedit three times? Maybe two or even three functions can be merged. Like you call odbinit, it checks if the environment |
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04 May 2017, Thomas Lindner, Forum, MIDAS Workshop - July 26
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Dear MIDAS users,
We would like to announce another MIDAS workshop at TRIUMF on July 26, 2017.
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11 Jul 2017, Thomas Lindner, Forum, MIDAS Workshop - July 26
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Dear MIDAS users,
We have an approximately final agenda for the MIDAS workshop in two weeks. The
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19 Jul 2017, Thomas Lindner, Forum, MIDAS Workshop - July 26
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Dear MIDAS colleagues,
We will use Zoom for people making remote connections to the MIDAS workshop next week. The connection details
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25 Jul 2017, Thomas Lindner, Forum, MIDAS Workshop - July 26
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Hi Folks,
I just realized I never provided the location for the meeting (for those at TRIUMF). It will be in the ISAC-II conference room.
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25 Jul 2017, Stefan Ritt, Info, Current git repository "develop" branch broken
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Dear all,
we are currently undergoing major modifications in the way mhttpd is working. I realized that
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13 Jul 2017, Konstantin Olchanski, Info, implemented: json-rpc batch requests
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The mhttpd json-rpc interface now implements batch requests per
http://www.jsonrpc.org/specification#batch
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19 Jun 2017, Thomas Lindner, Bug Report, mhttpd ODB editor changes string length, breaks
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I guess this might be related to the changes in the last elog conversation; but
I'll break it out as a separate problem.
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21 Jun 2017, Thomas Lindner, Bug Report, mhttpd ODB editor changes string length, breaks
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To follow up; with some help from Konstantin and Stefan, we realized that this
particular problem should already be fixed. While I was using the most recent version
of MIDAS, I hadn't rebuild the EPICS frontend programs when I was doing this test. Once
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20 Jun 2017, Richard Longland, Forum, High Rate
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07 Jun 2017, Alberto Remoto, Forum, Increase MAX_EVENT_SIZE
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Hello,
I am using a CAEN v1720 to digitise signal coming from 5 PMTs and I need to extend the read-
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13 Apr 2017, Andreas Suter, Bug Report, stop form odbedit broken
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when I try to stop a run from odbedit I get a core dump.
[ODBEdit1,INFO] Run #31 stopped odbedit: src/system.c:1223: ss_shm_flush:
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13 Apr 2017, Andreas Suter, Bug Report, stop form odbedit broken
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> when I try to stop a run from odbedit I get a core dump.
>
> [ODBEdit1,INFO] Run #31 stopped odbedit: src/system.c:1223: ss_shm_flush:
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15 Apr 2017, Konstantin Olchanski, Bug Report, stop form odbedit broken
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> > when I try to stop a run from odbedit I get a core dump.
> >
> > [ODBEdit1,INFO] Run #31 stopped odbedit: src/system.c:1223: ss_shm_flush:
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15 Apr 2017, Konstantin Olchanski, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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>
> I shall check on the use of MAX_STRING_LENGTH at least in odb itself...
>
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15 Apr 2017, Konstantin Olchanski, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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> >
> > I shall check on the use of MAX_STRING_LENGTH at least in odb itself...
> >
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19 Apr 2017, Stefan Ritt, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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> Fixed a small buglet, now saving and reloading odb in the old ".odb" format will silently truncate all overlong strings to 256 bytes. (I think it always
did that).
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22 Apr 2017, Konstantin Olchanski, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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> > Fixed a small buglet, now saving and reloading odb in the old ".odb" format will silently truncate all overlong strings to 256 bytes. (I think it always
did that).
>
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06 Jun 2017, Konstantin Olchanski, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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> ... the xml reader, probably has same problem
> ... xml writer truncates long strings via truncation in db_sprintf()
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19 Apr 2017, Stefan Ritt, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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ODB name lengths (the name of a key) are limited to 256 characters, the length of strings in the ODB should NOT be limited. At some point we wanted to have
complete web pages inside the ODB,
which for sure are longer than 256 characters. While this was the idea, I see now that db_paste & co. is hopelessly broken. To fix it, everything should |
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22 Apr 2017, Konstantin Olchanski, Bug Report, MAX_STRING_LENGTH, stop form odbedit broken
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> ODB name lengths (the name of a key) are limited to 256 characters, the length of strings in the ODB should NOT be limited.
Right, I was not ever aware of such limitation until I just now looked at the .odb and .xml writing code. Definitely string length
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02 May 2017, Konstantin Olchanski, Bug Report, mhttpd inline-editor and web MAX_STRING_LENGTH, stop form odbedit broken
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> > I shall check on the use of MAX_STRING_LENGTH at least in odb itself...
Also tested the web interface:
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24 Apr 2017, Stefan Ritt, Bug Report, stop form odbedit broken
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> CSS File = STRING : [1024] mhttpd.css
> Sqlite dir = STRING : [1024]
> History dir = STRING : [1024]
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15 Apr 2017, Konstantin Olchanski, Bug Report, where to report bugs, stop form odbedit broken
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>
> What is the preferred channel to report potential bugs (elog / bitbucket issues)?
>
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15 Apr 2017, Konstantin Olchanski, Bug Report, stop form odbedit broken
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> when I try to stop a run from odbedit I get a core dump.
> [ODBEdit1,INFO] Run #31 stopped odbedit: src/system.c:1223: ss_shm_flush:
> Assertion `size == mmap_size[handle]' failed. Aborted (core dumped)
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