[subexp-daq] Question on UCESB / UPEXPS

[Weber, Guenter Dr.]

Dear friends,


we have now checked the code for the SIS3316 module and will push a version with some bug fixes soon.


The next thing on our list is to understand how we can access and store the data that we produce. Bastian told us the following command to write LMD files to hard disk:

/LynxOS/mbsusr/mbsdaq/mbsrun/rio4/2021_mcalstruck/drasi/bin/lwrocctrl localhost --file-open=auto=1Gi,${file}

How does this LWROCCTRL work together with the Event Builder and UCESB which are started by the following commands?

../drasi/bin/lwrocmerge \
    --label=MCAL_EB \
    --merge-mode=event \
    --server=trans,flush=1 \
    --server=stream,flush=1 \
    --buf=size=800Mi \
    --max-ev-size=10Mi \
    --eb-master=rio4-mcal-2 \
    --file-writer \
    --drasi=rio4-mcal-2

------------------------------------

while :
do
~/mbsrun/rio4/mcalstruck/ucesb/empty/empty \
    stream://localhost \
    --server=stream:8001,bufsize=10Mi,flush=1,dataport:7001
sleep 5
done


Moreover, to read in the online data stream as well as the LMD files from disk, to us it looks like Bastian used a programm called UCESB_IN which is using a mapping that is defined within UPEXPS to interpret the content of the LMD files. To us it looks like UCESB_IN is like a wrapper for UCESB to do a mapping of the content of the LMD events and to send out a data stream of some of this content. Attached please find the configuration file for UCESB_IN.
Here, we are not sure up to which point there is a common approach to read experimental data and beyond that everybody is on his own.



Many thanks and best greetings from Jena
Günter



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