So, how do I use it ? Life is not that simple ...

• A batch script can be as simple as

• #!/bin/csh

• stardev # golden rule No 3

• cd myWorkDirectory/ # ...

• root4star -q -b 'mymacro.C(10,”/star/data09/reco/ppMinBias/ReversedReversld/P02ge/2001/355/st_physics_2355006_raw_0041.MuDst.root”,”myresult.root”)'

• using a specific file as input and output-ing myresult.root

• containing some histograms mymacro.C extracts.

• Immediate problems

• Submitting by hand may be inefficient (resources depends on sites)

• There are ~ 3 Million files (as many batch script to write ?? which one are “goo” ??). They are located in many places (sometimes change location)

• Have to deal with Batch technology / solution

Notes: