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CMS activities (a non-expert view – focus on T2)

CMS activities (a non-expert view – focus on T2). Sources : CMS CCRC08 https://twiki.cern.ch/twiki/bin/view/CMS/CMSCCRC08 Talks given at WLCG and CCRC coordination meeting : http://indico.cern.ch/conferenceDisplay.py?confId=32361 iCSA08 is part of CCRC08 phase 2

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CMS activities (a non-expert view – focus on T2)

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  1. CMS activities (a non-expert view – focus on T2) • Sources : • CMS CCRC08 https://twiki.cern.ch/twiki/bin/view/CMS/CMSCCRC08 • Talks given at WLCG and CCRC coordination meeting : http://indico.cern.ch/conferenceDisplay.py?confId=32361 • iCSA08 is part of CCRC08 phase 2 • CSA08 : procesing activities - CMS specific exercise • CCRC08 : scale factor check and multi-VO activities • iCSA08 : initial CSA08 in May NOW! • fCSA08 : final in July • T1 workflows : reprocessing and skimming (iCSA08 • T2 workflows : MC prod (iCSA08), Analysis (iCSA08 + CCRC08) • Distributed Data Transfer : T0-T1, T1-T1, T1-T2, T2-T1 (CCRC’08) Thanks to Claude Charlot, Andrea Sciaba

  2. Distributed Data Transfer • PhEDEX-driven FTS transfers • T1 T2 and T2 T1 : down/up streams to/from analysis site • https://twiki.cern.ch/twiki/bin/view/CMS/CCRC08-DataTransfers • Mandatory to participate : Data Transfer commissioning • PADA DDT (Debugging Data Transfer) : • See details of link commisioning metric and procedure : https://twiki.cern.ch/twiki/bin/view/CMS/DDT • T1-T1 and T1 to T2 downlink: >20MB/s for 1 day • T2 to T1 uplink: >5MB/s for 1 day • periodic exercising of transfer to remain commissioned

  3. DDT commissioningreported by Claude Clarlot on May 13today situation ? Any progress ? https://twiki.cern.ch/twiki/bin/view/CMS/DDTLinkExercisingProd • T1_CCIN2P3 <-> autres T1s: tous les liens sont commissionnés • T1_CCIN2P3 -> associated T2s: Les liens vers les sites belges et chinois sont commissionnés, pour les sites français il nous manque actuellement: T1_CCIN2P3 ->T2_GRIF_LLR T1_CCIN2P3 ->T2_GRIF_IRFU T1_CCIN2P3 ->T2_IPHC. Les problèmes sont en cours d'investigation. • associated T2s -> T1_CCIN2P3 T2_GRIF_IRFU -> T1_CCIN2P3 vient d'être commissionné aujourd'hui. Tous les liens sont donc maintenant commissionés à l'exception de T2_IPHC -> T1_CCIN2P3

  4. T2 analysis worflows • More analysis activities foreseen in the context of CCRC’08-2 • Produce a realistic chaotic analysis workload… • https://twiki.cern.ch/twiki/bin/view/CMS/CCRC08-AnalysisAtTier2 • Mandatory to participate : PADA analysis commissioning coordinated by Josep Flix and Andrea Sciabà • Commissionning rules available from https://twiki.cern.ch/twiki/bin/view/CMS/PADASiteCommissioning • Plans : May 1st-2nd week : preparation 3rd week : instructions to site 4th week : Site commissioning start-up… to be ready in June

  5. 14 CC-IN2P3 AF yes yes 70-80% 90-100% - 15 GRIF yes yes - 90-100% 0 16 GRIF yes yes - 90-100% 2 17 GRIF yes yes 90-100% - - 18 GRIF yes yes - - 2 19 IPHC yes missing entry - - 1 Site commissioning • Reported by Andrea Sciaba on May 6 • Several criteria part of the site commissioning procedure • Including results of CMS SAM tests • Reported by Claude Charlot on May 13« L'objectif de ce commissioning est de valider les sites pour l'analyse au T2 (transferts de datasets de physique, soumission de jobs grille, écriture dans /store/user). Parmi les sites français, pour l'instant seul T2_CCIN2P3 est commissionné et donc en cours d'opération pour le test CCRC08 .»

  6. GDB CMS SAM testing A.Sciaba@GDB14 May • Slides : http://indico.cern.ch/getFile.py/access?contribId=1&sessionId=5&resId=0&materialId=slides&confId=20229 • CMS SAM tests : CE, SRM • Testing basic functionality, software installation and config, reproduce operations of MC production • Credentiels used /cms/Role=lcgadmin for most of the tests, /cms/Role=production for CE-cms-prod and CE-cms-mc tests) • SRMv2 tests use lcg-util commands – space token CMS_DEFAULT tested • Test criticality • WLCG critical tests + some CMS tests (in fact most of them) like CMSSW installation, FroNtier... • set and taken into account in dashboard : SAM page developped by CMS to be used soon by other VOs, in particular Atlas. • Designed for sites : CMS SAM page is a central location for getting site status at a glance -alarms through Nagios : works also for OSG (tested by Caltech) • Site commissioning defines useability of a site: SAM is one of the source of information. • CMS dashboard http://dashboard.cern.ch/cms/index.html • CMS SAM page : http://lxarda16.cern.ch/dashboard/request.py/samvisualization

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