Here's a bunch of random tricks I use, some SLAC-related, but many are general to ATLAS.
If you leave a window open too long, your kerberos ticket will expire, so you can't write to your /afs home directory.
Get a new ticket with:
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kinit <username>
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If you need a particular database release, for running over data typically,
you can set the database release you want to use by adding to your cmthome/requirements file:
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hadd -h #show how to use hadd -f step.root */*step.root #for instance |
Sometime Sometimes when running over data it helps to put a link in your running directory:
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