TWiki> AtlasCanada Web>GridActivities>ATLASCanadaTier-2Operations>T2WeeklyReport20101207 (2010-12-13, BryanCaron) EditAttach

Tier1 and Tier-2 Weekly Report 2010-12-07

General News

  • end of running for the year with the last run of heavy ions finished Monday [20101206]

pd2p-ca-20101207.png
    • Open Issues and Ongoing Discussions:
      • small logfiles going to tape endpoints at T1s [20101018]
      • temporary increase in size of HOTDISK at TRIUMF from 1 to 1.5 TB prior to central cleanup of unneeded DBRelease versions for T1s [20101013]
      • published site installed resource capacity information to be investigated and confirmed against WLCG information [20100928]
      • CREAM CE deployment preparations
      • HammerCloud tests of TRIUMF completed via panda to compare direct i/o via dcap, FileStager and full file copy
      • 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
        • Previously Reported Information on this topic:
          • escalate query to ATLAS dashboard support regarding missing CA-SCINET-T2 site in the ARDA dashboard production activity display [20100216]
            • reminder message posted to the Dashboard Savannah entry for this problem https://savannah.cern.ch/bugs/index.php?64507 [20100518] (updated 20101012)
            • news from ADC monitoring coordinator A. Read (20101013):
              • "The cloud issue has proven difficult to deal with in the present production dashboard framework. This month and next we are discussing changes in direction which we hope will make it much more straightforward to deal with the clouds."
      • CA-VICTORIA-WESTGRID-T2 site missing from the ATLAS dashboard SAM Visualization page [20100824]
      • 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]
      • 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 [20101207]
    • 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) [2011019]
      • CA-ALBERTA-WESTGRID-T2 OK (both for local squid and backup to SFU)
      • CA-SCINET-T2: OK (both for local squid and backup to SFU)
      • CA-VICTORIA-WESTGRID-T2 OK (both for local squid and backup to CA-ALBERTA-WESTGRID-T2)
      • SFU-LCG2 OK (both CEs; both for local squid and backup to CA-VICTORIA-WESTGRID-T2)
      • ATLAS_AUSTRALIA - OK (OK for local squid and backup to CA-VICTORIA-WESTGRID-T2)
      • TRIUMF-LCG2 OK (ce1) OK (ce2) (local Frontier launchpad and BNL as backup)
      • VICTORIA-LCG2 OK (OK for local squid and backup to CA-VICTORIA-WESTGRID-T2)

SAM Results

  • site service status via Gridview - Please check your site
    • NOTE: Comments regarding last weeks service issues are still to be added to the report

  • November 2010 Results
triumf-november2010.png australia-november2010.png alberta-november2010.png scinet-november2010.png sfu-november2010.png victoria-november2010.png

APEL Accounting

APEL Publishing Status

  • apel publishing issue since last week for CA-ALBERTA-WESTGRID-T2 (to be investigated)
    • see nagios errors
apel-status-aus-20101207.png apel-status-ca-20101207.png

APEL Accounting Results

apel-statistics-aus-20101207.png apel-statistics-ca-20101207.png

Site Reports

Alberta

Recent Issues

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

  • analysis job issues
    • See "Notes" section below

  • created separate dcap, dccp and gridftp movers in an attempt to correct problems observed with suspended file access in dCache (analysis jobs dominantly)
  • occasional memory exhaustion issues with dCache admin node
    • plan to split admin node services across multiple nodes on timescale of next hardware purchase (spring 2011)
  • glitch in moab accounting group setting last week resulted in larger than expected share of running atlas jobs on the cluster (greater than 600) compared to allocation target
  • apel publishing issue since last week (to be investigated)

Outstanding Issues

  • dCache door network tuning
  • cream CE testing
  • dCache testbed - futher studies regarding dCache upgrade path
  • 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 - delayed
    • 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

  • 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

  • cream CE installation and testing started [20100929]
    • test installation (blackhole.westgrid.ca) at first which will subsequently be applied to update the lcg-CEs (snowpatch then bugaboo)

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

Outstanding Issues

  • CREAM CE installation to be performed in next few weeks [20101005]
  • Occasionally some jobs arrive without stage-in .gpg files and have to be terminated. Cause unknown (20100928)

Toronto

Recent Issues

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

  • analysis job issues
    • See "Notes" section below

Outstanding Issues

  • tcp tuning exercise [20101116]
    • corrected routing issue between doors and pools which previously were transferring data to pools over external nics rather than internal network [20101112]
    • improvements in communication between LFC server and site WNs observed
    • retry ENV variables to be added still

  • 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)
    • Q: Are these still an issue and under investigation? (BC) [20101026]

  • 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.

TRIUMF

Recent Issues

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

  • analysis job issues
    • see "Notes" section below

Outstanding Issues

  • temporary increase in size of HOTDISK from 1 to 1.5 TB to avoid DDM blacklist while the central list of required DBReleases is coordinated by ADC [20101013]
    • cleanup by ADC across sites did not liberate much space

  • configured CREAM CE [20100929]
    • under local test and debugging of ENV settings

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

  • no news

Production

Summary

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

    • NOTE: ARDA ProdSys Dashboard has stopped being used by ADCoS team due to information updating issues with the interface. The historical job usage information is to appear separately within ARDA and is being validated. This will be used in the future for information presented here.

  • Within the CA Cloud:

  • Within the CA Cloud (Panglia View):
panglia-production-ca-week-20101207.png panglia-analysis-ca-week-20101207.png

  • How we fared to other ATLAS sites during the past week:
panglia-production-all-week-20101207.png panglia-analysis-all-week-20101207.png

  • Alternate Views (Source link for last 7 days): 

Time interval:   2010-11-30 00:00:00   to   2010-12-07 00:00:00

cloud:  [FINISHED/FAILED]
US (849851/192952)   
DE (457858/77023)   
FR (427103/65245)   
CERN (382833/99645)   
UK (326152/78366)   
NL (240274/60531)   
IT (187998/23357)   
CA (153886/20619)   
ES (139974/21496)   
ND (120567/3418)   
TW (76745/16341)

Cloud:             [FINISHED/FAILED]
                  CA (153886/20619)

Production Site:
Australia-ATLAS          (2848/515)
CA-ALBERTA-WESTGRID-T2   (11744/851)
CA-SCINET-T2            (24932/1183)
CA-VICTORIA-WESTGRID-T2 (7286/33)
SFU-LCG2                 (7540/135)
TRIUMF                 (32435/2553)

Analysis Site:
ANALY_AUSTRALIA        (4795/2279)
ANALY_ALBERTA-WG1       (5804/4745)
ANALY_SCINET            (10007/653)
ANALY_VICTORIA-WG1      (5804/4745)
ANALY_SFU               (5867/1764)
ANALY_SFU_bugaboo       (5873/290)
ANALY_TRIUMF           (29109/4747)

Failed Jobs

  • From Panda Monitor (last week)

  • to be added
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: (Nov 30 - December 7, 2010) 


No central report this week.

-- BryanCaron - 2010-12-07

Attachments Attachments
Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng alberta-avail-20101214.png r1 manage 16.3 K 2010-12-13 - 22:46 BryanCaron  
PNGpng alberta-november2010.png r1 manage 16.2 K 2010-12-07 - 21:43 BryanCaron  
PNGpng apel-statistics-aus-20101207.png r1 manage 827.5 K 2010-12-07 - 17:31 BryanCaron  
PNGpng apel-statistics-ca-20101207.png r2 r1 manage 1216.2 K 2010-12-07 - 17:32 BryanCaron  
PNGpng apel-status-aus-20101207.png r1 manage 15.3 K 2010-12-07 - 17:31 BryanCaron  
PNGpng apel-status-ca-20101207.png r1 manage 25.8 K 2010-12-07 - 17:31 BryanCaron  
Texttxt atlas-sw-week-summary-20101207.txt r1 manage 6.8 K 2010-12-07 - 19:44 BryanCaron  
PNGpng australia-avail-20101214.png r1 manage 16.3 K 2010-12-13 - 22:46 BryanCaron  
PNGpng australia-november2010.png r1 manage 16.0 K 2010-12-07 - 21:43 BryanCaron  
PNGpng panglia-analysis-all-week-20101207.png r1 manage 37.0 K 2010-12-07 - 17:39 BryanCaron  
PNGpng panglia-analysis-ca-week-20101207.png r1 manage 31.7 K 2010-12-07 - 17:39 BryanCaron  
PNGpng panglia-production-all-week-20101207.png r1 manage 33.8 K 2010-12-07 - 17:39 BryanCaron  
PNGpng panglia-production-ca-week-20101207.png r1 manage 29.1 K 2010-12-07 - 17:39 BryanCaron  
PNGpng pd2p-ca-20101207.png r1 manage 501.5 K 2010-12-07 - 16:55 BryanCaron  
PNGpng scinet-avail-20101214.png r1 manage 16.4 K 2010-12-13 - 22:46 BryanCaron  
PNGpng scinet-november2010.png r1 manage 15.9 K 2010-12-07 - 21:43 BryanCaron  
PNGpng sfu-avail-20101214.png r1 manage 16.2 K 2010-12-13 - 22:46 BryanCaron  
PNGpng sfu-november2010.png r1 manage 15.8 K 2010-12-07 - 21:43 BryanCaron  
PNGpng triumf-avail-20101214.png r1 manage 16.3 K 2010-12-13 - 22:46 BryanCaron  
PNGpng triumf-november2010.png r1 manage 15.9 K 2010-12-07 - 21:43 BryanCaron  
PNGpng victoria-avail-20101214.png r1 manage 16.3 K 2010-12-13 - 22:46 BryanCaron  
PNGpng victoria-november2010.png r1 manage 16.0 K 2010-12-07 - 21:43 BryanCaron  
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