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0001 ---
0002 title: "Instructor Notes"
0003 ---
0004
0005 This tutorial follows the [environment setup](https://eic.github.io/tutorial-setting-up-environment/)
0006 and [geometry development with DD4hep](https://eic.github.io/tutorial-geometry-development-using-dd4hep/)
0007 tutorials and assumes learners already have a working `eic-shell`.
0008
0009 ## Before the session
0010
0011 - Ask learners to complete the [Setup](../learners/setup.md) page in advance and to have `eic-shell`
0012 installed and working. On systems without `/cvmfs` the container download is large and should not
0013 be done live.
0014 - The physics-event episode reads large HepMC3 input files from the EIC XRootD server. Network
0015 access to `root://dtn-eic.jlab.org` from the training systems should be confirmed beforehand, and
0016 learners should be aware that centrally produced files are many GB in size.
0017
0018 ## Timing
0019
0020 Each episode is roughly 30 minutes of teaching and 20 minutes of exercises. The first `ddsim` run
0021 against cvmfs can be slow the first time, as Geant4 data files are fetched; budget extra time.
