 19 Apr 2012, Stefan Ritt, Bug Report, Build error with mlogger: invalid conversion from ‘void*’ to ‘gzFile’
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[quote="Exaos Lee"]I tried to build MIDAS under ArchLinux, failed on errors as following:
[CODE]src/mlogger.cxx: In function ‘INT midas_flush_buffer(LOG_CHN*)’:
src/mlogger.cxx:1011:54: error: invalid conversion from ‘void*’ to ‘gzFile’ [-fpermissive]
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27 Apr 2012, Stefan Ritt, Bug Report, Build error with mlogger: invalid conversion from ‘void*’ to ‘gzFile’
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[quote="KO]BTW, I read the midas elog via email and if you post html or elcode messages, I receive complete
gibberish. For prompt service, please select message type "plain". (yes, you cannot use fancy colours and
blinking text, but better than me not reading your stuff at all).
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14 Jun 2012, Stefan Ritt, Bug Report, Cannot start/stop run through mhttpd
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> I found the problem only appears when I run mhttpd in scripts, whether bash or python.
> And I'm quite sure that the MIDAS environments (e.g. PATH, MIDAS_EXPTAB, MIDASSYS, etc.)
> are set in such scripts. If I start mhttpd in an xterm with or without "-D", it works
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21 Jun 2012, Stefan Ritt, Info, midas vme benchmarks 
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Just for completeness: Attached is the VME transfer speed I get with the SIS3100/SIS1100 interface using
2eVME transfer. This curve can be explained exactly with an overhead of 125 us per DMA transfer and a
continuous link speed of 83 MB/sec. |
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21 Jun 2012, Stefan Ritt, Bug Report, Cannot start/stop run through mhttpd
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> I agree. Somehow mhttpd cannot run mtransition. I am not super happy with this dependance on user $PATH settings and the inability to capture error messages
> from attempts to start mtransition. I am now thinking in the direction of running mtransition code by forking. But remember that mlogger and the event |
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22 Jun 2012, Stefan Ritt, Info, midas vme benchmarks
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> > Just for completeness: Attached is the VME transfer speed I get with the SIS3100/SIS1100 interface using
> > 2eVME transfer. This curve can be explained exactly with an overhead of 125 us per DMA transfer and a
> > continuous link speed of 83 MB/sec.
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25 Jun 2012, Stefan Ritt, Info, midas vme benchmarks
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> P.S. Observe the ever present unexplained event rate fluctuations between 130-140 event/sec.
An important aspect of optimizing your system is to keep the network traffic under control. I use GBit Ethernet between FE and BE, and make sure the switch |
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13 Jul 2012, Stefan Ritt, Bug Report, Crash after recursive use of rpc_execute()
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> Then I realized that I see a recursive call to rpc_execute(): rpc_execute() calls tr_stop() calls cm_yield() calls
> ss_suspend() calls rpc_execute(). The second rpc_execute successfully completes, but leave corrupted
> data for the original rpc_execute(), which happily crashes. At the moment of the crash, recursive call to
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 05 Sep 2012, Stefan Ritt, Info, New pipe compression implemented in mlogger
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A new pipe compression has been implemented in mlogger thanks to Fedor Ignatov from BINP
Novosibirsk. The way it works that the logger write into a pipe instead directly into a file. The pipe can
then be connected to any compression program without the need to copile against any additional C
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11 Sep 2012, Stefan Ritt, Info, MIDAS button to display image
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> Hi,
>
> I've written a python script that reads some data from a file and generates a
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09 Oct 2012, Stefan Ritt, Bug Fix, [PATCH] mana.c compile fix, gz files
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> Hi,
>
> I had to apply the attached patch to convince SuSE Linux 12.2 to compile mana.c
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13 Dec 2012, Stefan Ritt, Bug Report, ss_thread_kill() kills entire program
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The Linux thread functionality was introduced by Konstantin, so he might have a better idea about that.
What I usually do is a graceful thread shutdown just by a flag. Like
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14 Dec 2012, Stefan Ritt, Suggestion, Midas + Elog with SSL
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> I've been trying to set up midas to create an automatic elog entry at the end of
> each run and I've run into a problem. I've setup an elog on our server which
> uses SSL and it seems that the melog provided by midas to create logbook entries
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20 Dec 2012, Stefan Ritt, Bug Report, MIDAS does not function correctly on F17
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If is not so easy to get out of zlib how many bytes have been written actually. I used an undocumented function,
which breaks down on 64-bit systems.
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09 Jan 2013, Stefan Ritt, Bug Report, Outputting ADC and TDC data into ROOT tree with the MIDAS SVN Revision:5347.
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Dear Bill,
the Midas analyzer "mana.c" is currently not maintained. At PSI we use the ROME framework (which might be too complicated for a
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01 Feb 2013, Stefan Ritt, Forum, analyzer cannot connect to the statistics database
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> The simplest thing is probably to delete all files .[A-Z]*.SHM in the odb directory (the
> one you specified in /etc/exptab).
> This wipes the ODB, shared memory and all the other obscure stuff, giving you a clean,
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06 Feb 2013, Stefan Ritt, Info, Compression benchmarks
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I redid the tests from Konstantin for our MEG experiment at PSI. The event structure is different, so it
is interesting how the two different experiments compare. We have an event size of 2.4 MB and a trigger
rate of ~10 Hz, so we produce a raw data rate of 24 MB/sec. A typical run contains 2000 events, so has a
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11 Feb 2013, Stefan Ritt, Forum, send_tcp error
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> I am getting a series of errors from MIDAS that I do not understand, so I hope
> someone can help me figure this out.
>
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12 Feb 2013, Stefan Ritt, Forum, send_tcp error
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Ok, now the picture is clearer. I have however no idea what the real problem is. The number of concurrent programs in midas is 64 as defined in midas.h
(MAX_CLIENTS) so that should not be the problem. In our experiment we run 10 front-ends (but
on 10 different machines) without problems. Other experiments used 27 front-ends.
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14 Feb 2013, Stefan Ritt, Info, Review of github and bitbucket
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Let me add my five cents:
We use bitbucket now since two months at PSI, and are very happy with it.
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