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Among the various public machines at SLAC, for to get started on ATLAS work you should ssh to either:

rhel4-32.slac.stanford.edu (a cluster of a few nodes good for ATLAS work)

atlint01one of the ATLAS interactive machines like atlint03.slac.stanford.edu (an ATLAS machine)

If you have any questions please post them to the Non-Grid Jobs at SLAC Forum in the ATLAS Hypernews system,
where all local SLAC ATLAS computing issues are discussed. (If you don't have an ATLAS account, please mail me.)

How to get up and running quick

#Do this just once:
cd
cp ~ahaas/.bashrc .
cp ~ahaas/.profile .
mkdir .hepix; cp ~ahaas/.hepix/* .hepix/
echo "none" > ATLCURRENT
mkdir reldirs
cp -r ~ahaas/cmthome .
bash
cd cmthome
source /afs/slac.stanford.edu/g/atlas/c/CMT/v1r20p20090520/mgr/setup.sh
cmt config

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You may want to have an area with >500MB of storage space (the /afs home limit).
If you're in group "atlas" (check with "groups", otherwise mail young@slac and he'll do "ypgroup adduser -group atlas -user username"):

mkdir /afs/slac.stanford.edu/g/atlas/work/<firstLetterOfUsername>/<username>
ln -s /afs/slac.stanford.edu/g/atlas/work/<firstLetterOfUsername>/<username> nfs

Otherwise you have to use /scratch areas on the machines...

mkdir /scratch/<username>
ln -s /scratch/<username> scratch

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Everytime you log in and want to use an ATLAS release (15.2.0.1 is used for this example, but 15.5.1 is a more recent release...):

touch ~/.usecvmfs
bash #this is the supported shell for ATLAS work at SLAC
mkdir ~/reldirs/15.2.0 #if it doesn't already exist (where 15.2.0 is the first 3 numbers of the release)
cd reldirs/15.2.0
. ~/cmthome/setup.sh -tag=15.2.0.1

Note: for 16.0.0+ you should (and may have to) use:

 asetup 16.5.0.1 #(or whatever the release is...)

The releases available at SLAC can be seen here.

setupATLAS
asetup 17.2.7.4.1,64,AtlasPhysics,here,slc5 #to setup a particular release.

Now you can run athena, for example:

get_files -jo HelloWorldOptions.py
athena.py HelloWorldOptions.py > ~/scratch/hello.log

#Check out code for skeleton AOD analysis:
atladdpkg PhysicsAnalysis/AnalysisCommon/UserAnalysis

#To get a particular version of the package, other than what's in the current release:
#cmt co -r UserAnalysis-00-13-17 PhysicsAnalysis/AnalysisCommon/UserAnalysis

#If no ATLAS access yet:
#cp -r ~ahaas/reldirs/15.3.1/PhysicsAnalysis .

#build package
cd PhysicsAnalysis/AnalysisCommon/UserAnalysis/cmt; make; cd ../run

More (and possibly updated) details on setup with cvmfs can be found at the beginning of the Software Basics section of the ATLAS Software tutorial.

You should be able to run anything from the CERN computing workbook, software workbook, and physics workbook.

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The default "requirements" file:

set CMTSITE STANDALONE
set SITEROOT /afs/slac/g/atlas/b/
#set DBRELEASE_OVERRIDE 7.1.1

macro ATLAS_DIST_AREA ${SITEROOT}
macro ATLAS_TEST_AREA ${HOME}/reldirs
apply_tag setup
apply_tag simpleTest
use AtlasLogin AtlasLogin-* $(ATLAS_DIST_AREA)