Unable to find plugin 'MuonExercise2' in category 'CMS EDM Framework Module'

[chuxue26]

----- Begin Fatal Exception 07-Jun-2023 08:18:41 CEST----------------------- An exception of category 'PluginNotFound' occurred while [0] Constructing the EventProcessor Exception Message: Unable to find plugin 'MuonExercise2' in category 'CMS EDM Framework Module'. Please check spelling of name. ----- End Fatal Exception -------------------------------------------------

[cmsbuild]

A new Issue was created by @chuxue26 chuxue.

@Dr15Jones, @perrotta, @dpiparo, @rappoccio, @makortel, @smuzaffar can you please review it and eventually sign/assign? Thanks.

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[perrotta]

@chuxue26 could you please give some more context? What is that MuonExercise2 (I can't find it in CMSSW)? How did you get that error? How can one reproduce it?

[chuxue26]

It is from 2020 CMS Data Analysis School @ CERN : Muon Short Exercise (virtual) (https://twiki.cern.ch/twiki/bin/view/CMS/SWGuideCMSDataAnalysisSchoolCERN2020MuonShortExercise). Exercise 2: Looking at the Z mass spectrum Step 1: Generated and reconstructed dimuon Z mass

I just: xrdcp /eos/user/c/cmsdas/short-exercises/muon/Exercise2/MuonExercise2.py MuonExercise2.py mkdir plugins cd plugins xrdcp /eos/user/c/cmsdas/short-exercises/muon/Exercise2/plugins/MuonExercise2.cc MuonExercise2.cc xrdcp /eos/user/c/cmsdas/short-exercises/muon/Exercise2/plugins/BuildFile.xml BuildFile.xml And then scram b cmsRun MuonExercise2.py

[makortel]

Did you do the steps

cd MuonExercises
mkdir MuonExercise2
cd MuonExercise2

inside a CMSSW developer area? (i.e. are the MuonExercise2.cc and BuildFile.xml files copied under $CMSSW_BASE/src/MuonExercises/MuonExercise2/plugins?

(Is this exercise by any chance part of the ongoing CMSDAS at CERN? Or are you doing the exercise independently?)

[chuxue26]

Yes, I did the steps inside a CMSSW developer area. I am doing the exercise independently. But I think this step can probably be done independently. Because the first half of the exercise can be done independently, just using files in /eos/user/c/cmsdas/. Could you please tell me how I make sure that I can do this exercise independently? Thanks.

[chuxue26]

I successfully did the step in /eos/home-c/chuxue/.../CMSDAS2020/$CMSSW_BASE/src/MuonExercises/MuonExercise2 ! Thank you!!!

I did it in /eos/user/c/chuxue/.../CMSDAS2020/$CMSSW_BASE/src/MuonExercises/MuonExercise2 before. What is the difference for these two? Thanks!

[perrotta]

Why are you setting your local area on eos instead of (e.g.) afs, as also suggested in https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideCMSDataAnalysisSchoolCERN2020MuonShortExercise#Pre_requisite ?

[chuxue26]

Because I cannot open my X11 forwarding: Error: cannot open display: localhost:26.0

And one of the reasons I found online is there is no enough memory in my home dictionary. So I move all the files to /eos/. But it still not works. May I ask about this question? Thanks!!!