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Tier1 and Tier-2 Weekly Report 2010-08-17

General News

  • CA Cloud Squad Actions [20100817]
    • DaTRI requests for approval
      • none requiring cloud squad approval
    • queue operations
      • CA-ALBERTA-WESTGRID-T2: analysis queue set online [20100816] by cloud squad and production set online [20100817] by ADCoS shifters
        • site analysis and production queues originally set offline (test) [20100809] during unscheduled downtime (power outage)
    • HammerCloud tests of TRIUMF started and in progress to compare direct i/o via dcap and FileStager
    • Open Issues and Ongoing Discussions:
      • Pending action: update values for maxinputsize for SFU-LCG2 (snowpatch and bugaboo) within panda schedconfig [20100817]
      • HammerCloud tests of CA clouds sites is planned to be resumed soon to help measure site performance and identify any site setup bottlenecks [2010803]
      • discussion with DDM operations regarding centrally performed space cleaning policy and procedures [20100721]
      • submitted feature request to DaTRI to allow for disabling of auto-approval for LOCALGROUPDISK transfer requests [20100720]
      • CA-VICTORIA-WESTGRID-T2 site analysis queues marked online by Cloud Squad (20100709)
        • production queue kept in test state pending investigation of fortran runtime error "permission denied" within software release area (20100708) [SOLVED]
          • resolved by changing WN client NFS mounts to v3 from original NFSv4 (root cause within NFSv4 still unknown) [OPEN]
      • ROOTSYS truncated at 127 characters issue [20100608]
        • http://savannah.cern.ch/bugs/?68546 (open)
        • currently affecting Victoria (Tier3) and CA-SCINET-T2
        • varying character lengths below and above 127 characters show variable success and failure
        • related issue: user build jobs failing at CA-SCINET-T2 [20100511]
          • follow-up with site in regards to missing rpm installation; missing rpms added but problem is still occurring [20100518]
      • escalate query to ATLAS dashboard support regarding missing CA-SCINET-T2 site in the ARDA dashboard production activity display [20100216]
      • reviewing draft Squad How-To and providing feedback [20100407]
        • also contains useful information for sites
      • ongoing discussions with ADC experts regarding regional production activity and how to accommodate it cleanly within both the production system and the CA cloud and site operations [20100316]
      • running out of jobs at TRIUMF (and other CA cloud sites other than CA-SCINET-T2) [20100402]
        • "The problem may be due to the jet/group production task. Since these jobs have high priority, they are being sent to CA cloud, to the exclusion of lower prio jobs. Of course, they can only run at one site. So, other sites are running empty. Unanticipated side effect of running the task only at CA-SCINET-T2! Let me think how to solve it." K. De (ADC)
      • request submitted to Panda team for functionality to set site Panda queues offline automatically based upon scheduled outages/availability [20100216]
    • Outstanding Actions to Do:
      • follow-up information system publishing by dCache sites and use of FileStager within GangaRobot [20100111]
        • ie. dcap missing from TRIUMF and CA-ALBERTA-WESTGRID-T2 and so uses lcg-cp.

  • Squid Deployment [20100817]
    • CA cloud Frontier and Squid deployment information (versions and network information)
    • SAM tests: (CA Link), (Aus Link): currently status as of this morning (WARN is ok) [20100720]
      • CA-ALBERTA-WESTGRID-T2 WARN (local squid server offline since 20091108; new installation required; backup to SFU squid passes)
      • CA-SCINET-T2: OK (local squid server online and active for both lcg-ce1 and lcg-ce2; backup to SFU squid)
      • CA-VICTORIA-WESTGRID-T2 OK (both for local at VICTORIA-LCG2 and backup to SFU squid)
      • SFU-LCG2 OK (both CEs; local squid is OK; backup squid at VICTORIA-LCG2 OK)
      • VICTORIA-LCG2 OK (OK for local squid and connection to SFU squid)
      • ATLAS_AUSTRALIA - OK (local squid OK; backup to VICTORIA-LCG2 OK)
      • TRIUMF-LCG2 OK (ce1) OK (ce2) (local Frontier launchpad and BNL as backup)

  • Site Action Items:
    • CA-ALBERTA-WESTGRID-T2
      • reinstall local squid server [DONE 20100812]

SAM Results

APEL Accounting

APEL Publishing Status

apel-status-aus-20100817.png apel-status-ca-20100817.png

APEL Accounting Results

apel-statistics-aus-20100817.png apel-statistics-ca-20100817.png

Site Reports

Alberta

Recent Issues

  • production job issues
    • See "Production" Activities section below

  • analysis job issues
    • See "Notes" section below

  • CA-ALBERTA-WESTGRID-T2 site status [20100810]
    • unscheduled outage due to power outage during severe thunderstorms [20100809]
    • reinstalled squid server via kvm virtual machine and in production [20100809]
      • need to confirm ACLs to allow access from all CA cloud Tier-2 sites
      • operational 20100812
    • dCache SRM space usage discprepancy work-around to be tested this week on dump of postgresql database (postponed)

Outstanding Issues

  • CA-ALBERTA-WESTGRID-T2 site status [20100511]
    • DDM: discrepancy between SRM and DQ2 usage (see above savannah)
      • tests on postgres dump of dCache databases pending
    • additional open items being followed-up:
      • need to update to dCache golden release cycle from currently running 1.9.3-3
      • performance of fairshare trees configuration to be studied with WestGrid site admins in regards to priorities, non-NRAC allocations and effect upon priority of ATLAS jobs
    • network cabling maintenance planned for lighpath connection [postponed from 20100319]
    • squid server (vm) offline since restart to CA-ALBERTA-WESTGRID-T2 services following scheduled downtime for power maintenance [20091108]
      • completed [20100809]

SFU

Recent Issues

  • summary of this weeks Savannah bugs and GGUS tickets for site:

  • production job issues
    • See "Production" Activities section below

  • analysis job issues
    • See "Notes" section below

Outstanding Issues

Victoria

Recent Issues

  • production job issues
    • See "Production" Activities section below

  • analysis job issues
    • see "Notes" section below

Outstanding Issues

  • VICTORIA-LCG2 SCRATCHDISK became full [20091112]
    • action to Bryan to write short srm script to generate warning notifications to sites when token areas approach becoming full
    • UPDATE: removed from issues list to track. ADC now issues automatic notification to cloud squads of sites/tokens with reduced space to be handled by auto-cleanup

Toronto

Recent Issues

  • analysis job issues
    • See "Notes" section below

Outstanding Issues

  • pilot issues [20100511]
    • significant number of immediately failing pilots for both TRIUMF and LMU factories
    • need to logon to WN directly and run the wrapper script by hand

  • dCache error investigations
    • Occassional "There is no file with pnfsid=.." errors (20100430)
      • under discussion with dCache experts at TRIUMF and elsewhere
    • dCache PutUseSpaceCallbacks errors (20100504)

  • large number of LFC related errors (20100404)
    • 'Put error: lfc_setfsizeg failed' and 'lfc_statg failed' and 'errstr = Bad magic number'

  • SciNet-TRIUMF lightpath network use and optimization [20100413]
    • BGP established on Force 10 router for link to TRIUMF [20100407]
      • Information Request: is a failover test to the ORAN planned? A: Not yet.

  • observed high rate of job failures for pilots submitted via CERN factory compared to those from LMU and TRIUMF [20100322]
    • different network path observed from CERN to Scinet compared to from LMU. Pilots from CERN halted pending investigation

  • discussion with pilot factory experts ongoing regarding interplay between condorg and globus gma, and local adjustments to correct the 33% of all pilots which fail on WNs * "submit-helper script running on host gpc-f108n039 gave error: cache_export_dir (/localstorage/lcg/home/prdatl83/.lcgjm/globus-cache-export.W29972) on gatekeeper did not contain a cache_export_dir.tar archive"

TRIUMF

Recent Issues

  • production job issues
    • See "Production" Activities section below

  • analysis job issues
    • see "Notes" section below

Outstanding Issues

Australia-ATLAS

Recent Issues

  • production job issues
    • See "Production" Activities section below

  • analysis job issues
    • See "Notes" section below

Outstanding Issues

  • identified bug in SL53/54 x86_64 where a combination of specific LD_PRELOAD and LD_LIBRARY_PATH can cause core binaries (ls, rm etc.) to segfault

McGill

Recent Issues

  • the technical information and requirements in the issued RFP are available upon request; please contact Bryan who has a copy forwarded from Simon [20100720]

Production

Summary

CA Cloud Statistics Reference Link (Last Week) Overall Statistics Reference Link (Last Week)

  • Within the CA Cloud:
production-dashboard-ca-20100817.png

production-dashboard-none-aus-20100817.png

production-dashboard-none-scinet-01-20100817.png

production-dashboard-none-scinet-02-20100817.png

production-dashboard-none-vic-20100817.png

  • Within the CA Cloud (Panglia View):
panglia-production-ca-20100817.png panglia-analysis-ca-20100817.png

  • How we fared to other ATLAS sites during the past week:
production-dashboard-summary-20100817.png

  • Alternate Views (See link for last 3 days only):
panda-dashboard-ca-20100817.png

  • CA Cloud (last 3 days):
panda-dashboard-statistics-ca-20100817.png

Failed Jobs

  • From Panda Monitor (last week):
    • Not Available this report

  • From Dashboard (last week): 


name,rank,value
TRF_UNKNOWN ,1,272
TRFERROR,2,158
TRF_SEGFAULT ,3,68
EXEPANDA_DQ2_STAGEIN,4,28
EXEPANDA_JOBKILL_BYPILOT,5,3
EXEPANDA_ATHENA_RAN-OUT-OF-MEMORY,6,2

    • CA-ALBERTA-WESTGRID-T2 
name,rank,value

    • Australia-ATLAS 

name,rank,value
TRFERROR,1,41
EXEPANDA_DQ2PUT_FILECOPYTIMEOUT,2,17
EXEPANDA_DQ2PUT_FILECOPYERROR,3,13
EXEPANDA_DQ2GET_INFILE,4,9
TRF_UNKNOWN ,5,5




name,rank,value
TRF_UNKNOWN ,1,19
EXEPANDA_JOBKILL_NOLOCALSPACE,2,7
TRFERROR,3,5
EXEPANDA_DQ2PUT_FILECOPYERROR,4,2
EXEPANDA_PILOTEXCEPTION,5,1

You can find the meanings of the transform error codes on this link.

  • Yuri's notes: week (Aug 10 - Aug 16) 


   - active tasks from PandaDB: 168
      -- distribution by cloud:
       CA:3 CERN:1 DE:48 ES:3 FR:17 IT:6 ND:11 NL:20 TW:5 UK:16 US:38

1) Tue Aug.10
 + CA/CA-ALBERTA-WESTGRID-T2 FT f./DEST./CONN./SRM.GGUS 61033 verified:
   site was set to unscheduled outage.

5) Sat Aug.14
 + CA/Australia-ATLAS job f./Get/err.reading token data header:lcg_cp.GGUS
   61132 verified:DPM restart,pilots with Graeme's cert.do not seem to be
   coming any more.

-- BryanCaron - 2010-08-17
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PNGpng apel-statistics-aus-20100817.png r1 manage 846.7 K 2010-08-17 - 19:25 BryanCaron  
PNGpng apel-statistics-ca-20100817.png r1 manage 1277.8 K 2010-08-17 - 19:25 BryanCaron  
PNGpng apel-status-aus-20100817.png r1 manage 15.1 K 2010-08-17 - 19:25 BryanCaron  
PNGpng apel-status-ca-20100817.png r1 manage 25.3 K 2010-08-17 - 19:25 BryanCaron  
PNGpng panda-dashboard-ca-20100817.png r1 manage 1892.3 K 2010-08-17 - 19:31 BryanCaron  
PNGpng panda-dashboard-statistics-ca-20100817.png r1 manage 684.8 K 2010-08-17 - 19:38 BryanCaron  
PNGpng panglia-analysis-ca-20100817.png r1 manage 26.5 K 2010-08-17 - 19:27 BryanCaron  
PNGpng panglia-production-ca-20100817.png r1 manage 25.0 K 2010-08-17 - 19:27 BryanCaron  
PNGpng production-dashboard-ca-20100817.png r1 manage 430.8 K 2010-08-17 - 19:41 BryanCaron  
PNGpng production-dashboard-none-aus-20100817.png r1 manage 77.1 K 2010-08-19 - 22:30 BryanCaron  
PNGpng production-dashboard-none-scinet-01-20100817.png r1 manage 70.8 K 2010-08-19 - 22:30 BryanCaron  
PNGpng production-dashboard-none-scinet-02-20100817.png r1 manage 64.6 K 2010-08-19 - 22:30 BryanCaron  
PNGpng production-dashboard-none-vic-20100817.png r1 manage 141.7 K 2010-08-19 - 22:30 BryanCaron  
PNGpng production-dashboard-summary-20100817.png r1 manage 941.8 K 2010-08-17 - 19:42 BryanCaron  
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