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kpedro88/old_htcondor_bindings.md

Last active January 14, 2021 03:20
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Using htcondor python bindings in CMSSW_8_0_X
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old_htcondor_bindings.md

CMSSW_8_0_X cannot use the htcondor python bindings as installed using the system python in RHEL7 operating systems.

There is a method to install and use (automatically) the correct versions of the bindings. This can enable e.g. the use of manageJobs.py from CondorProduction. This method depends on scram-pip from lpc-scripts, which is available on cvmfs at /cvmfs/cms-lpc.opensciencegrid.org/FNALLPC/lpc-scripts/scram-pip.

Assuming you are in a CMSSW_8_0_X release area and have already done cmsenv, execute these bash commands:

HOME=$CMSSW_BASE python -m ensurepip --user
scram-pip -d $CMSSW_BASE/.local
cmsenv
HOME=$CMSSW_BASE pip install --no-cache-dir --user --upgrade pip
scram-pip -d $CMSSW_BASE/.local htcondor==$(condor_version | head -n 1 | cut -d' ' -f2) -p="--no-cache-dir"
cmsenv

Starting the python and pip commands with HOME=$CMSSW_BASE works around the lack of support for --prefix in ensurepip and older versions of pip. After executing these commands, $CMSSW_BASE/.local/lib/python2.7/site-packages will automatically be added to your $PYTHONPATH whenever you call cmsenv.

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