--+ Tier1 and Tier-2 Weekly Report 2015-03-24

General News

  • ADC and ATLAS Computing News [20150324]
    • ADC Weekly meeting
    • Rucio Clients
      • Update on progress of implementing user-friendlier rucio client commands and richer outputs
      • Discussion about improving documentation and tutorials
      • Caution about too many handles for users to circumvent checks and procedures without some thought (e.g. rucio touch), especially given the new data model
      • Some new suggestions from DAST shifters
        • Syntax for transfer to scratch on a given cloud, for example. List of common use cases, all in one place
          • Tutorial is great, but limited cases and dispersed.
        • rucio list-datasets-rse needs to be more verbose, at least settably: number of replicas, timestamp (and sort by time or list created after a certain time), size (human-readable or not)
        • dq2-finger replacement
        • rucio touch for extending lifetimes
    • HLT Status
      • One ongoing task
      • Brokerage issues – Mostly user created with bad memory and scout specifications
      • Further problems upon merging
        • Incomplete/missing/malformed steps (again, mostly user error)
        • Being fed back into instructions
    • PIC Tape System
      • Use Enstore v4.2.2-3 (from FNAL)
      • Tape drives (shared between all VOs; guaranteed minimum number of drives per experiment):
        • T10KC - 8 drives (5.4 TB/tape, 240 MB/s write)
        • LTO5 - 4 drives (1.5 TB/tape, 140 MB/s write)
        • LTO4 - 11 drives (0.8 TB/tape, 120 MB/s write)
      • Won't go into details here - CMS used tapes more than ATLAS last year (x3?)
      • Led into discussion about tape file families and how this will play with the new rucio naming and data lifetime policies
  • CA Cloud Squad Actions
  • Open Issues and Ongoing Discussions
  • WLCG and General Computing News
    • Security News
    • gLite/EMI News
  • ROC_Canada News

ABCD Determination and Monitoring

SSB Results

SAM Results (based on VO tests)

APEL Accounting

APEL Synchronization Test Links

Production and Usage Status

-- Leslie Groer - 2015-03-24

Comments

Topic revision: r1 - 2015-03-24 - LeslieGroer
 
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