Problem with key(?)

CMS
1

My students are having a problem when trying to access the DoubleParked_Muons data, stopping while trying to access a private key. Do you have any suggestions?

Thanks>

When attempting to run the dimuon spectrum analysis code on the 2016 proton-proton CMS open data docker container. When compiling a script using root, this error message popped up.

260603 19:43:09 246 secgsi_InitProxy: cannot access private key file: /home/cmsusr/.globus/userkey.pem

The file that was being accessed via this line in the script

ROOT::RDataFrame df(“Events”, “root://eospublic.cern.ch//eos/opendata/cms/derived-data/AOD2NanoAODOutreachTool/Run2012BC_DoubleMuParked_Muons.root”);

The code came from the .C file in this github project https://github.com/cms-opendata-analyses/DimuonSpectrumNanoAODOutreachAnalysis

2

Hi Rob,

Just letting you know I’m checking into this. I can see that the file is accessible to me on a cluster with ROOT, e.g. just running root root://eospublic.cern.ch//eos…to open the file. It might be helpful to know if you see the same error when doing a typical file open like that in ROOT as opposed to dataframe command.

Thanks,

Julie Hogan