 08 Jul 2021, Francesco Renga, Forum, Problem with python file reader
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Dear experts,
while trying to readout a MIDAS file from a python script. I get the error below at the very first event. Any hint?
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 09 Jul 2021, Ben Smith, Forum, Problem with python file reader
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Hi Francesco,
Can you send me an example file to look at please? Either attached to the elog or sent directly to bsmith@triumf.ca
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26 Apr 2017, Francesco Renga, Forum, Problem with logger at run start
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Dear experts,
we have a problem when trying to run a MIDAS DAQ which worked in the past on the same PC (but on a different
network). We get the following error messages when starting a new run:
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26 Apr 2017, Stefan Ritt, Forum, Problem with logger at run start
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Dear Francesco,
Your error (No route to host) typically means that you have a network problem outside of MIDAS. Your computer has to "find itself" and
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26 Apr 2017, Francesco Renga, Forum, Problem with logger at run start
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Dear Stefan,
thank you very much for your reply. We could finally fix the problem by replacing "scarlett" with "scarlett.localdomain" in our
hostname configuration file /etc/hostname (under debian).
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02 May 2017, Konstantin Olchanski, Forum, Problem with logger at run start
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> Wed Apr 26 23:03:12 2017 [mhttpd,ERROR] [midas.c:9106:rpc_client_connect,ERROR] cannot connect to host "scar
> lett", port 44858: connect() returned -1, errno 113 (No route to host)
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14 Oct 2014, Konstantin Olchanski, Bug Report, Problem with EQ_USER
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If you use EQ_USER in mfe.c and have multiple threads writing into the ring buffer, you will have a big
problem - the thread locking in the ring buffer code only works for a single writer thread and a single
reader thread.
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15 Oct 2014, Stefan Ritt, Bug Report, Problem with EQ_USER
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Sure, each thread needs its own ring buffer for writing.
So I see that we need back the multiple-ring-buffer-readout-scheme even before MEG will start. So what you need is something like
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16 Oct 2014, Stefan Ritt, Bug Report, Problem with EQ_USER
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I restructured the front-end code to enable multiple readout threads for EQ_USER equipment. Last summer I was definitively interrupted during
that work and left it in an half finished state, sorry for that.
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10 Aug 2012, Carl Blaksley, Forum, Problem with CAMAC controlled by CES8210 and read out by CAEN V1718 VME controller
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Hello all,
I am trying to put together a system to read out several camac adc. The camac is
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22 Feb 2016, ZiyiGuo, Forum, Problem with BLTRead
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Dear all,
I'm using MIDAS system and CAEN V1721 to digitize the waveform from photomultipliers (
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23 Feb 2016, Pierre-Andre Amaudruz, Forum, Problem with BLTRead
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> Dear all,
>
> I'm using MIDAS system and CAEN V1721 to digitize the waveform from photomultipliers (
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02 Mar 2016, ZiyiGuo, Forum, Problem with BLTRead
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> > Dear all,
> >
> > I'm using MIDAS system and CAEN V1721 to digitize the waveform from photomultipliers (
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26 Jun 2019, Hassan, Forum, Problem transferring fetest data from the remote frontend to the backend
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Hi again, we now have Midas installed on the Rpi (remote frontend machine) and
have managed to run Fetest on it. Now we are at a stage where we want to send
the Fetest data over to the Data Acquisition machine, which also has Midas
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26 Jun 2019, Konstantin Olchanski, Forum, Problem transferring fetest data from the remote frontend to the backend
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> Hi again, we now have Midas installed on the Rpi (remote frontend machine) and
> have managed to run Fetest on it. Now we are at a stage where we want to send
> the Fetest data over to the Data Acquisition machine ...
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12 Mar 2019, Francesco Renga, Forum, Problem stopping every second run
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Dear all,
I'm running a DAQ frontend and it works well if one single run is
taken. If I try to take a second run right after, the run is performed but, when
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13 Mar 2019, Konstantin Olchanski, Forum, Problem stopping every second run
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> I'm running a DAQ frontend and it works well if one single run is
> taken. If I try to take a second run right after, the run is performed but, when
> stopping it, I get the error messages below. Any hint?
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02 Feb 2007, Exaos Lee, Bug Fix, Problem solved by Re-define _syscall0(...)
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OK, I searched and found that my kernel doesn't support "_syscall0" any more. So I patched the system.c as the following (from line 954):
[CODE]
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06 Feb 2007, Stefan Ritt, Bug Fix, Problem solved by Re-define _syscall0(...)
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[quote="Exaos Lee"]Maybe it's not the perfect way, but it works. :-)[/quote]
I changed it to:
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14 Oct 2014, Konstantin Olchanski, Bug Report, Problem in mfe multithread equipments
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In the ALPHA experiment at CERN I found a problem in mfe.c handling of multithreaded equipments. This problem was in
some forms introduced around May 2013 and around Aug 2013 (commit
https://bitbucket.org/tmidas/midas/src/45984c35b4f7/src/mfe.c) (I hope I got it right).
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