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Certainly for ATLAS up to tier-0 (and I believe all that follows until a
user plots a root file on a windows system or linux depending on
preference and convenience) is all SLC4 (the C is for CERN).  We have
some windows systems for the slow controls but all analysis/trigger/daq
including SBCs use SLC4.

The grid is too, but for all I know some of it may run under XEN or some
other emulation, so I suppose it could be SL4 under something else.

Christopher Hunter wrote:
> Out of curiousity, how much of LHC computing is done with scientific linux:
> - detector event recording (ie. ATLAS) ?
> - Tier-0 storage backend ?
> - grid computing ?
> - (desktop) data analysis
> 
> Cheers,
> 

- --
Robert E. Blair, Room E277, Building 362
Argonne National Laboratory (High Energy Physics Division)
9700 South Cass Avenue, Argonne, IL 60439, USA
Phone: (630)-252-7545  FAX: (630)-252-5782
GnuPG Public Key: http://www.hep.anl.gov/reb/key.asc
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