 26 Jan 2007, Carl Metelko, Forum, Front end electronics broadcast data over ethernet, can midas read this in
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Hi,
the system I'm building will have data read into the frontend nodes
via ethernet (optic). Is this possible?> |
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21 Jan 2007, Denis Bilenko, Bug Report, buffer bugs
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Hello,
We've been using midas and have stumbled upon some inconsistent behaviour:
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 22 Jan 2007, Stefan Ritt, Bug Report, buffer bugs
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[quote="Denis Bilenko"]1. Blocking calls to midas api aren't usable when client is connected through mserver. This is true at least for bm_receive_event,
but seems to be a more general problem - midas application has call cm_yield within 10 seconds (or whatever timeout is set) to remain alive.
That not the case when RPC is not used.[/quote]
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23 Jan 2007, Denis Bilenko, Bug Report, buffer bugs
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1 & 3 - thanks for the fix and the explanation, as for 2 - I've tried consume and produce
and still has a problem:
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23 Jan 2007, Stefan Ritt, Bug Report, buffer bugs
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[quote="Denis Bilenko"]1 & 3 - thanks for the fix and the explanation, as for 2 - I've tried consume and produce
and still has a problem[/quote]
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24 Jan 2007, Stefan Ritt, Bug Report, buffer bugs
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I tried again and could [U]not[/U] reproduce the problem. Last time I was probably confused by some old mserver.exe executable I had lying around. I updated
to the most recent version (3516) and did a [B]C:\midas> nmake -f makefile.nt[/B]. Last time I was also confused about the low rate, but that was caused
by a mserver.exe executable which was not compiled with optimization. For small event sizes (such as 10 bytes) there is a big difference between optimized |
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11 Jan 2007, Steve Hardy, Forum, Shared memory problems
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Hello,
Just did a fresh install of MIDAS from the SVN repository under CentOS and
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11 Jan 2007, Stefan Ritt, Forum, Shared memory problems
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> Hello,
>
> Just did a fresh install of MIDAS from the SVN repository under CentOS and
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11 Jan 2007, Steve Hardy, Forum, Shared memory problems
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Thanks for your help. I tried again and it got me back to the initial problem I had.
The frontend will start, and the analyzer starts (complains about there not being a
last.root, but other than that it's fine), and then when starting mlogger, I get:
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11 Jan 2007, Stefan Ritt, Forum, Shared memory problems
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That sounds like you mix versions: You have an old executable (maybe your mlogger) which
has been linked against the old midas version, but you create the ODB with the new
odbedit or frontend. The new version complains if it finds an ODB from a previous version
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27 Dec 2006, Eric-Olivier LE BIGOT, Forum, Access to out_info from mana.c
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Hello,
Is it possible to access out_info (defined in mana.c) from another program?
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05 Jan 2007, Eric-Olivier LE BIGOT, Suggestion, Access to out_info from mana.c
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Would it be relevant to transform out_info into a *non-static* variable of a type
defined by a *named* struct?
Currently, programs that try to access out_info cannot do it anymore; and they
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08 Jan 2007, Stefan Ritt, Suggestion, Access to out_info from mana.c
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I changed out_info into a global structure definition ANA_OUTPUT_INFO and put it into
midas.h, so it can be accessed easily from the user analyzer source code.
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26 Oct 2006, Hans Fynbo, Forum, Setup of Ortec ADC AD413A in MIDAS
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We are new to MIDAS and try to setup a simple system with one ortec camac ADC
AD413A and the hytec1331 controler. Has anyone used this module in MIDAS we
would be grateful for the corresponding frontend.c etc.
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16 Oct 2006, Exaos Lee, Bug Fix, Build error with mana.c while using CERNLIB, svn 3366
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If you use CERNLIB to build hmana.o, you may encounter the following error:
[code]
src/mana.c: In function ‘write_event_hbook’:
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16 Oct 2006, Stefan Ritt, Bug Fix, Build error with mana.c while using CERNLIB, svn 3366
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| Committed, thanks. |
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23 Sep 2006, Konstantin Olchanski, Bug Report, mhttpd elog corruption via double-edit
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Aparently the mhttpd elog will corrupt the elog files if two (or more?) elog entries are being edited at the
same time. K.O. |
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24 Sep 2006, Stefan Ritt, Bug Report, mhttpd elog corruption via double-edit
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[Quote="K.O.]Aparently the mhttpd elog will corrupt the elog files if two (or more\?) elog entries are being edited at the same time. K.O.[/quote]
That's strange. Since mhttpd is single threaded, there should not be any multi-thread/process conflict there, since the elog files cannot be written simultaneously |
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27 Sep 2006, Konstantin Olchanski, Bug Report, mhttpd elog corruption via double-edit
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[quote="Stefan Ritt"][Quote="K.O.]Aparently the mhttpd elog will corrupt the
elog files if two (or more\?) elog entries are being edited at the same time.
K.O.[/quote]
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28 Sep 2006, Stefan Ritt, Bug Report, mhttpd elog corruption via double-edit
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> I do not know how to "properly" fix this bug without changing the indexing
> scheme to something similar to what is used by elogd- message numbers instead of
> file indices. In the existing scheme, message editing also breaks URLs shown in
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20 Sep 2006, Stefan Ritt, Suggestion, Increase of maximum event size
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Dear midas users,
The current event size in midas is limited to 512k (MAX_EVENT_SIZE in midas.h). This is mainly due to old (pre 2.2) linux kernels which had only a very |
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20 Sep 2006, Stefan Ritt, Suggestion, Increase of maximum event size
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Since nobody complained so far, I increased MAX_EVENT_SIZE to 2MB. If anybody has problems with this setting, please report. Note that after updating to
SVN revision 3327 it will be necessary to recompile [U]all[/U] midas programs and to delete any old [B]SYSTEM.SHM[/B] or [B].SYSTEM.SHM[/B]. I added some
code which should check for inconsistent SYSTEM.SHM sizes, but I'm not sure if it works everywhere. |
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27 Sep 2006, Konstantin Olchanski, Suggestion, Increase of maximum event size
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> The current event size in midas is limited to 512k (MAX_EVENT_SIZE in midas.h)
Yes, 512 kBytes is rather small. For the T2K prototype TPC DAQ, I built and ran
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28 Sep 2006, Stefan Ritt, Suggestion, Increase of maximum event size
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[quote="K.O."]Now, we have per-buffer tunable size (see message
https://ladd00.triumf.ca/elog/Midas/283) and in the long run, I would prefer the
compiled-in limit to go away: already all memory is allocated dynamically and
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05 Sep 2006, Konstantin Olchanski, Forum, Forums moved from dasdevpc.triumf.ca to ladd00.triumf.ca
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For the record, the MIDAS (& co) forums have been physically moved from
dasdevpc.triumf.ca to our new server machine ladd00.triumf.ca. This change
should be transparent to all users, but if anything stops working, please let me
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04 Sep 2006, Konstantin Olchanski, Bug Fix, Fix MIDAS on MacOS 10.4.7
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I commited minor fixes for building MIDAS on MacOS 10.4.7:
1) there is no linux/unistd.h
2) gcc 4.0.0 does not like "struct { ... } var;" although "struct Foo { ... } var;" is fine
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01 Sep 2006, pohl, Forum, Hytec 5331 CAMAC kernel 2.6 driver problem
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Grüezi,
I am new to this list.
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19 Aug 2006, Konstantin Olchanski, Bug Fix, fixes for minor mhttpd problems
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I commited fix for minor mhttpd problems (rev 3314):
- for a newly created experiment, the "history" button gave the error [history
panel "" does not exist] (new problem introduced in revision 3150)
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26 Aug 2006, Konstantin Olchanski, Bug Fix, fixes for minor mhttpd problems
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> I commited fix for minor mhttpd problems (rev 3314):
> - elog attachments did not work for file names containing character plus (+)
> (attachement URLs should be properly encoded to escape special CGI characters)
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17 Aug 2006, Konstantin Olchanski, Bug Report, "double" values are truncated
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The mhttpd ODB displays and mhist truncate values of "float" and "double"
floating point variables to 6 digits. In reality, "float" has 7 significant
digits and "double" has 16. I recommend that db_sprintf() in odb.c be changed to
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17 Aug 2006, Stefan Ritt, Bug Report, "double" values are truncated
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> The mhttpd ODB displays and mhist truncate values of "float" and "double"
> floating point variables to 6 digits. In reality, "float" has 7 significant
> digits and "double" has 16. I recommend that db_sprintf() in odb.c be changed to
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12 Aug 2006, Pierre-André Amaudruz, Release, Midas updates
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Midas development:
Over the last 2 weeks (Jul26-Aug09), Stefan Ritt has been at Triumf for the "becoming" traditional Midas development 'brainstorming/hackathon' (every second |
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07 Aug 2006, Konstantin Olchanski, Bug Fix, Refactoring and rewrite of event buffer code
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In close cooperation with Stefan, I refactored and rewrote the MIDAS event
buffering code (bm_send_event, bm_flush_cache, bm_receive_event and bm_push_event).
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09 Aug 2006, Konstantin Olchanski, Bug Fix, Refactoring and rewrite of event buffer code
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> In close cooperation with Stefan, I refactored and rewrote the MIDAS event
> buffering code (bm_send_event, bm_flush_cache, bm_receive_event and bm_push_event).
>
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07 Aug 2006, Konstantin Olchanski, Bug Fix, Fix crash in mfe.c
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Some time ago, I accidentally introduced a bug in mfe.c- if there is data
congestion in the system, mfe.c can exit with the error "bm_flush_cache(ASYNC)
error 209" because it did not expect the valid return value BM_ASYNC_RETURN
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07 Aug 2006, Stefan Ritt, Info, New multi-threaded midas slow control system
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[b]Multi-threaded slow control system[/b]
The Midas slow control system has been modified to support multi-threaded slow control front-ends. Each device gets it's own thread in the front-end, which |
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02 Aug 2006, Shawn Bishop, Bug Report, MIDAS packaged examples: compilation bug?
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Hi All,
I switched to Sci. Linux 4.3, from FC5, and was able to get the guts of MIDAS to compile without any difficulties. Now, I have followed the "Quick Start" |
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03 Aug 2006, Stefan Ritt, Bug Report, MIDAS packaged examples: compilation bug?
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[quote="Shawn Bishop"]Anyone have an idea what's going on here?[/quote]
The Makefile contained the outdated target [B]fal[/B], which is a combined frontend/analyzer/logger. You don't need that, so I removed it from the makefile. |
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03 Aug 2006, Shawn Bishop, Bug Report, MIDAS packaged examples: compilation bug?
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[quote="Stefan Ritt"][quote="Shawn Bishop"]Anyone have an idea what's going on here?[/quote]
The Makefile contained the outdated target [B]fal[/B], which is a combined frontend/analyzer/logger. You don't need that, so I removed it from the makefile. |
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03 Aug 2006, Shawn Bishop, Bug Report, MIDAS packaged examples: compilation bug?
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[quote="Stefan Ritt"][quote="Shawn Bishop"]Anyone have an idea what's going on here?[/quote]
The Makefile contained the outdated target [B]fal[/B], which is a combined frontend/analyzer/logger. You don't need that, so I removed it from the makefile. |
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01 Aug 2006, Konstantin Olchanski, Bug Fix, User-tunable buffer sizes
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By default, MIDAS creates shared memory event data buffers of default size
EVENT_BUFFER_SIZE defined in midas.h and until now making of large data buffers
for high data rate or large event size experiments was complicated.
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31 Jul 2006, Konstantin Olchanski, Bug Fix, Fix user memory corruption in ODB
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We have been seeing consistent user memory corruption while setting up a new
experiment. This has been traced to a user memory overwrite in ODB db_set_data()
function and this problem is now fixed. This error was triggered by our frontend
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