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CHEP 2001

CHEP 2001. Highlights Vladim i r.Bahyl@cern.ch. CHEP 2001 1/4. Electronic Logbook for the HEP Control Room (Philippe Canal/FNAL) multimedia, remotely-viewable, configurable, platform independent GDML (Radovan Chytr áček/CERN) Geometry description of detectors

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CHEP 2001

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  1. CHEP 2001 Highlights Vladimir.Bahyl@cern.ch

  2. CHEP 2001 1/4 • Electronic Logbook for the HEP Control Room (Philippe Canal/FNAL) • multimedia, remotely-viewable, configurable, platform independent • GDML (Radovan Chytráček/CERN) • Geometry description of detectors • Geant4 prototype in C++ • To Compress or Not to Compress (Andrew Hanushevsky/SLAC) • Objectivity compression database support • Compared ootidy, zlib, zz-comp • 2x capacity vs. 9x servers

  3. CHEP 2001 2/4 • The Linux Farm at the RCF (Antonio Chan/BNL) • CRS – Reconstruction - 187 CPUs • Batch only, own batch software written in Perl • CAS – Analysis - 151 CPUs • Batch and interactive access, LSF • VACM, web based monitoring, NFS, AFS • Linux @ DESY (Knut Woller/DESY) • 750 in Hamburg, 160 in Zeuthen • SuSE (YaST) – 200 pkgs locally – rest in AFS • server/personal workstation configurations • www.netsaint.org

  4. CHEP 2001 3/4 • D0 Reconstruction Farm (Lee Lueking/FNAL) • 40 dual-CPU PC’s – testing, 50 in production • 4 CPU SGI Origin 2000 for $HOME • SAM/Enstore - data delivery, FBS - job control • The CDF Run 2 Offline Computer Farms (Pasha Murat/FNAL) • 2 I/O SGI nodes (staging, NFS, control) • 154 dual-CPU PCs, 1 GB I/O files, 20 MB/sec • Experiences Constructing and Running Large Shared Clusters at CERN (Vladimír Bahyl/CERN)

  5. CHEP 2001 4/4 • Security for Grid (Robert Cowles/SLAC) • Authorization and authentication based on PKI • Possible authentication solutions: • Accounts everywhere, Central DB of userid/passwords, Central DB combined with distributed DB, Decentralize • Variations: Proxy/Delegation, Community Authorization Service, MyProxy • Object features of Oracle 9i (Marcin Nowak/CERN) • Object modeling (SQL 1999), OTT, C++ binding via OCCI • VLDB features for HEP (tablespaces, partitioning)

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