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Glexec , CREAM CE

This article discusses the principles and deployment of Glexec at IN2P3-CC and provides an overview of CREAM CE in relation to other LCG CEs. It also explores the use of CREAM CE with Atlas and highlights areas of collaboration and testing.

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Glexec , CREAM CE

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  1. Glexec, CREAM CE Pierre Girard Réunion CAF2010-05-07

  2. Content • Glexec • Principles • Deployment at IN2P3-CC • CREAM CE • Today • Asap • CREAM CE and Atlas ? Pierre Girard / CAF / Glexec et CREAM CE

  3. Glexec / Principles (1) VO tasks • Site Access Control (Now) WN LCAS CAs Pilot Job userpilot DN1 ban_users.db CE DNx DNy … Pilot agent qsub submit Task of User1 mapfiles LCMAPS « /vo/role » .user gridmapdir • userpilot <-> DN1 • user002 <-> DN2 • user003 • … userpilot Pierre Girard / CAF / Glexec et CREAM CE

  4. Glexec / Principles (2) • Site Access Control (Glexec/SCAS) VO tasks DN1 WN LCAS CE CAs userpilot qsub ban_users.db Pilot agent SCAS DNx DNy … Glexec user001 Task of User1 with DN1 Task of User2 with DN2 gridmapdir LCMAPS • user001 <-> DN1 • user002 <-> DN2 • user003 • user004 • … user002

  5. Glexec / Deploymentat IN2P3-CC (1) • First setup at CCIN2P3 (may/july 2009) • Setuid/SCAS mode • Glite-WN shared on AFS • But additional module « glite-GLEXEC_wn » not entirelyshareable • /etc/ld.so.conf • no static version of Glexec • LD_LIBRARY_PATH not an alternative because of setuid • /etc/syslog.conf • Gridenvironment variables problem • glexecclearedmost of the environment variables • But a glexecwrappershouldbenowavailable to rebuild the gridenvironment • 2 load-balanced SCAS nodes • Not reallytestedwith a real production load • Tighten collaboration • WithGlexecdevelopers • With VO testers (lhcb/atlas) Pierre Girard / CAF / Glexec et CREAM CE

  6. Glexec / Deploymentat IN2P3-CC (2) • New deployment (2010) • With an enhanced version of Glexec_WN • By the end of may (hopefully) • By starting with SCAS service • But, by probably switching from SCAS to ARGUS Service asap • Requires to be tested and well-understood Pierre Girard / CAF / Glexec et CREAM CE

  7. CREAM CE • Today IN2P3-CC (T1) IN2P3-CC-T2 (T2) LCG CE1 LCG CE2 LCG CE4 CREAM CE1 LCG CE5 CREAM CE3 SL4 Glite3.1 LCG CE3 LCG CE7 LCG CE8 LCG CE6 Glite3.2 SL5 SL5 VO/color: ALICE ATLAS LHCB CMS EGEEs Pierre Girard / CAF / Glexec et CREAM CE

  8. CREAM CE • ASAP • Only CREAM CE • Glite 3.2 / SL5 IN2P3-CC (T1) IN2P3-CC-T2 (T2) CREAM CE5 CREAMCE6 CREAM CE1 CREAM CE2 CREAM CE3 CREAM CE4 Glite 3.2 Glite 3.2 SL5 SL5 VO/color: ALICE ATLAS LHCB CMS EGEEs Pierre Girard / CAF / Glexec et CREAM CE

  9. Use of cccreamceli01 / VOs Suzanne Poulat

  10. CREAM CE vs LCG CEs (T1) Suzanne Poulat

  11. CREAM CE vs LCG CE / RAM Pierre Girard / CAF / Glexec et CREAM CE

  12. CREAM CE vs LCG CE / CPUs Pierre Girard / CAF / Glexec et CREAM CE

  13. CREAM CE vs LCG CE / Load Pierre Girard / CAF / Glexec et CREAM CE

  14. CREAM CE and Atlas • ??? Pierre Girard / CAF / Glexec et CREAM CE

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