TWiki> AtlasCanada Web>GridActivities>ATLASCanadaTier-2Operations>T2WeeklyReport20100831 (2010-08-31, BryanCaron) EditAttach

Tier1 and Tier-2 Weekly Report 2010-08-31

General News

  • ADC News [20100831]
  • CA Cloud Squad Actions [20100831]
    • DaTRI requests for approval
      • none
    • ATLAS Site Exclusion Sannah entries created
    • queue operations
      • CA-VICTORIA-WESTGRID-T2: analysis and production queues set to test [20100818] by cloud squad due to DDN storage issues and scheduled downtime
        • validated and returned to online state by cloud squad [20100825] [analysis] and ADCoS shifters [20100825] [production]
      • SFU-LCG2: analysis and production queues set to test [20100823] by cloud squad due to scheduled downtime (power switch upgrade)
        • validated and returned to online state by cloud squad [20100824] [analysis] and ADCoS shifters [20100825] [production]
      • SFU-LCG2: analysis and production queues set to test [20100827] by cloud squad due to scheduled downtime (network maintenance)
        • validated and returned to online state by cloud squad [20100829] [analysis] and ADCoS shifters [20100831] [production]
      • CA-ALBERTA-WESTGRID-T2: analysis and production queues set to test [20100825] by cloud squad due to DDN maintenance and scheduled downtime
        • validated and returned to online state by cloud squad [20100828] [analysis] and ADCoS shifters [20100828][production]
    • issue of sites within Cloud None within the production dashboard [20100829]
      • issue raised to ADC operations email list given that there was no ADC Weekly meeting yesterday
      • reply from ADC monitoring coordinator (A. Read) is that this long-standing problem is known and being worked on, but is difficult to fix
      • this problem will be on the agenda for the next ADC monitoring meeting scheduled for next week
    • Missing Files at TRIUMF-LCG2_MCDISK (Panda ID 1101024400 and 1101024401) [20100818]
    • HammerCloud tests of TRIUMF completed via panda to compare direct i/o via dcap, FileStager and full file copy
    • Open Issues and Ongoing Discussions:
      • CA-VICTORIA-WESTGRID-T2 site missing from the ATLAS dashboard SAM Visualization page [20100824]
      • 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 [20100831]
    • 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 OK (both for local squid and backup to SFU squid)
      • 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)

    • ATLAS squid monitoring (20100827)

  • update to space token sizes for CA-WEST Tier-2 sites [20100831]
    • new values to match MoU commitments and conform with the relative allocation between storage types as requested by ADC

SAM Results

APEL Accounting

APEL Publishing Status

apel-status-aus-20100831.png apel-status-ca-20100831.png

APEL Accounting Results

apel-statistics-aus-20100831.png apel-statistics-ca-20100831.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 [20100831]
    • work last week with DDN and multipath setup, adding 6 new LUNs to the site dCache during scheduled downtime [20100826]
    • brief scheduled downtime planned for 20100901 (3 hours) to coincide with TRIUMF downtime, to add additional storage LUNs to dCache pools
      • ADC Site Exclusion Savannah
    • production activity problems with release 15.6.10 (see above)
      • query into A. de Salvo regarding possible re-install of release + re-validation
      • re-validation underway (20100831)
    • dCache SRM space usage discprepancy work-around to be tested next week (postponed from previous weeks)

Outstanding Issues

  • DDM: discrepancy between SRM and DQ2 usage (see above savannah) [20100511]
    • 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 - targetting mid-September for upgrade
    • 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]

SFU

Recent Issues

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

  • analysis job issues
    • See "Notes" section below

Outstanding Issues

Victoria

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

  • (un)scheduled downtimes starting 20100819 due to DDN array issues [ended 20100825]

  • new site squid host (sphinx.westgrid.ca) completed final testing before it can be considered for additio to the ToA

Outstanding Issues

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-20100831.png

production-dashboard-none-aus-20100831.png production-dashboard-none-scinet-20100831.png production-dashboard-none-vic-20100831.png

  • Within the CA Cloud (Panglia View):
panglia-production-ca-20100831.png panglia-analysis-ca-20100831.png

  • How we fared to other ATLAS sites during the past week:
production-dashboard-all-20100831.png

  • Alternate Views (See link for last 3 days only):
panda-dashboard-summary-20100831.png

  • CA Cloud (last 3 days):
panda-dashboard-ca-20100831.png

Failed Jobs

  • From Panda Monitor (last week):
panda-dashboard-errors-header-20100831.png panda-dashboard-errors-aus-20100831.png panda-dashboard-errors-ca-20100831.png panda-dashboard-errors-sfu-20100831.png panda-dashboard-errors-triumf-20100831.png

  • From Dashboard (last week): 

name,rank,value
TRFERROR,1,498
TRF_UNKNOWN ,2,104
EXEPANDA_DQ2_STAGEIN,3,70
EXEPANDA_GRID-PROXY_INVALID,4,10
TRF_SEGFAULT ,5,6
EXEPANDA_JOBKILL_BYPILOT,6,5
EXEPANDA_JOBDISPATCHER_HEARTBEAT,7,2
EXEPANDA_DQ2PUT_FILECOPYTIMEOUT,8,1
TRF_SVRINIT ,9,1

    • CA-ALBERTA-WESTGRID-T2 
name,rank,value
TRFERROR,1,179
EXEPANDA_DQ2PUT_FILECOPYERROR,2,1

    • Australia-ATLAS 
name,rank,value
TRFERROR,1,14
EXEPANDA_DQ2GET_INFILE,2,3
EXEPANDA_DQ2PUT_FILECOPYTIMEOUT,3,1
TRF_UNKNOWN ,4,1



name,rank,value
TRFERROR,1,1

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

  • My Notes:
    • information missing in dashboard (production) still for CA-SCINET-T2.

  • Yuri's notes: Not Published This Week

-- BryanCaron - 2010-08-30
Attachments Attachments
Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng apel-statistics-aus-20100831.png r1 manage 877.3 K 2010-08-31 - 14:47 BryanCaron  
PNGpng apel-statistics-ca-20100831.png r1 manage 1295.9 K 2010-08-31 - 14:47 BryanCaron  
PNGpng apel-status-aus-20100831.png r1 manage 15.2 K 2010-08-31 - 14:47 BryanCaron  
PNGpng apel-status-ca-20100831.png r1 manage 25.5 K 2010-08-31 - 14:47 BryanCaron  
PNGpng panda-dashboard-ca-20100831.png r1 manage 684.5 K 2010-08-31 - 14:49 BryanCaron  
PNGpng panda-dashboard-errors-aus-20100831.png r1 manage 566.2 K 2010-08-31 - 14:48 BryanCaron  
PNGpng panda-dashboard-errors-ca-20100831.png r1 manage 1752.4 K 2010-08-31 - 14:48 BryanCaron  
PNGpng panda-dashboard-errors-header-20100831.png r1 manage 90.1 K 2010-08-31 - 14:48 BryanCaron  
PNGpng panda-dashboard-errors-sfu-20100831.png r1 manage 333.9 K 2010-08-31 - 14:48 BryanCaron  
PNGpng panda-dashboard-errors-triumf-20100831.png r1 manage 991.9 K 2010-08-31 - 14:48 BryanCaron  
PNGpng panda-dashboard-summary-20100831.png r1 manage 1753.6 K 2010-08-31 - 14:49 BryanCaron  
PNGpng panglia-analysis-ca-20100831.png r1 manage 35.6 K 2010-08-31 - 14:49 BryanCaron  
PNGpng panglia-production-ca-20100831.png r1 manage 25.1 K 2010-08-31 - 14:49 BryanCaron  
PNGpng production-dashboard-all-20100831.png r1 manage 920.3 K 2010-08-31 - 14:50 BryanCaron  
PNGpng production-dashboard-ca-20100831.png r1 manage 434.4 K 2010-08-31 - 14:50 BryanCaron  
PNGpng production-dashboard-none-aus-20100831.png r1 manage 61.0 K 2010-08-31 - 14:50 BryanCaron  
PNGpng production-dashboard-none-scinet-20100831.png r1 manage 128.4 K 2010-08-31 - 14:50 BryanCaron  
PNGpng production-dashboard-none-vic-20100831.png r1 manage 131.2 K 2010-08-31 - 14:50 BryanCaron  
Edit | Attach | Watch | Print version | History: r7 < r6 < r5 < r4 < r3 | Backlinks | Raw View | Raw edit | More topic actions
Topic revision: r7 - 2010-08-31 - BryanCaron
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2026 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback