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    BiLD-Dev

    → Europe/Zurich
    Federico Stagni (CERN)
    Description

    Bi-Weekly "Loyal" DIRAC developers meeting. And, following, the LHCbDIRAC developers meeting.

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    Meeting ID: 910 8369 4183
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    BiLD (Bi-weekly DIRAC Development meeting) – 18/08/2022

    On Zoom: Federico, Christophe, Christopher, Cedric, Simon F, Simon M, Xiaomei, Janusz, Alexey, Ueda, Igor
    Apologies: Andrei

    Follow-up from previous meetings

    DIRAC communities roundtable

    GridPP:

    SimonF+Janusz

    • Using v7r3 and py3.
    • Now using CloudComputingElement in production. Using Singularity too and PoolCE together (with patched version).

    LHCb:

    Federico+Christophe+Christopher+Alexandre+SimonM+Alexey

    • Running latest v7.3.27
    • MySQL DBs: Moved from BLOBs to TEXTs everywhere (a downtime was necessary)
    • Moved all ElasticSearch to OpenSearch (no issues)
    • Have yet to run an LHCbDIRAC hackathon using DIRAC 8.0 as base
    • from previous meeting Andrei to LHCb
      • Further details about the optimizations performed would be interesting.

    Federico details of the update could be found in https://codimd.web.cern.ch/5-ImZHjFTi6ko_a-5-5BFw#

    • How many concurrent MySQL connections do you support?
      • André 1000 should be the max
    mysql> show session variables like '%connections%';
Variable_name 	Value
max_connections 	1000
max_user_connections 	1000

    ILC/CLIC/FCC/Calice:

    André

    • NTR

    EGI:

    no one

    • NTR

    Belle2

    Ueda

    • Running on v7r2 since end of July (still py2)
    • from previous meeting Anil Presented ideas on using the Rucio data popularity features in Belle II. A link to the presentation has been added.

    BES, Juno

    Xiaomei

    • Just migrated to 7.3.20 (py3). Mostly fine, still some issues with using CloudComputingElement, still few issues – lots of progress thanks to SimonF.

    Nica

    Igor

    • Everything is fine. Started migrated to v7.3.27. Added small fixes to documentation.
    • Moving servers to bare metal

    Topics from GitHub/Discussions or Google forum

    only un-answered topics below:

    DIRAC releases

    • v7r2:
      • v7r2p48
        • FIX: (#6223) Increase VOMS command timeout
        • FIX: (#6265) Fix FC change{group,owner,mode} for multiple LFNs
        • FIX: (#6230) remove REST information from the ARC6 pilot job references to bind them with jobs
      • rel-v7r2 HEAD:
        • uses suds (only affects py3 clients)
    • v7r3
      • v7.3.26
        • FIX: (#6274) Conditional FC ProxyPlugin checks the ThreadConfig
      • v7.3.27
        • CHANGE: (#6284) Make GOCDB2CSAgent functionMap less private
        • Fix for ReqDB and BLOB (see above)
      • rel-v7r3 HEAD:
        • Few fixes merged (mostly Computing Resources), tag needed
    • integration
      • v8.0.0a27 tagged few weeks ago, since then many new fixes.

    DIRAC projects

    DIRAC:

    Issues by milestone:

    Other issues:

    PRs discussed:

    WebApp:

    • Just 1 PR open, Christopher will fix it.

    Pilot:

    DIRACOS2:

    Documentation:

    OAuth2:

    tornado/HTTPs

    • One release of our tornado fork for supporting python 3.10

    management

    • Added a few recipes (PRs already merged)

    diraccfg

    • Christopher Do we want to make a release that drops support for py2?
      • yes

    COMDIRAC

    • Merge in DIRAC? https://github.com/DIRACGrid/DIRAC/discussions/6157
      • from previous meeting Andrei This is a good idea to merge COMDIRAC but there are quite a number of subtle technical implications. Suggestion is to have a discussion among interested developers (Andrei, Andrii, Daniela, Simon) and come up with a proposal to be discussed at some future BiLD.

    DB12

    • NTR

    Rucio

    Release planning, tests and certification

    8.0 release

    • Create 8.0 release? LHCbDIRAC hackathon tomorrow, then we decide
    • Christpher remove the various six from everywhere?
      • yes

    Certification machines

    • lbcertifdirac70 machine:
      • NTR
    • lbcertifdiracoauth machine:
      • NTR

    Next hackathon(s)

    • from previous meeting Computing Element of each supported type should be configured (HTCondorCE, 2 ARCS (Alexandre), 2 Clouds (Daniela), SSH). Consider OAuth tests as well - what is needed as far as certification servers configuration is concerned.

    AOB

    Next hackathon on September 1st?
    Next BiLD on September 15th?

    from previous meeting An ARC/HTCondor CE Hackathon will happen on September 15th-16th in Amsterdam: https://indico.nikhef.nl/event/3612/. It would be good if one of us would participate.

    LHCbDIRAC

     
    There are minutes attached to this event. Show them.
      • 10:00 → 10:10
        Items from Previous BiLD-Dev 10m
      • 10:10 → 10:20
        DIRAC Communities roundtable 10m
      • 10:20 → 10:30
        DIRAC releases 10m
      • 10:30 → 10:55
        DIRAC projects 25m
        • DIRAC
        • WebApp
        • Pilot
        • DIRACOS
        • DIRACOS2
        • VMDIRAC
        • Documentation
        • OAuth2
        • tornado/HTTPs
        • other externals (include Rucio)
        DIRAC certification
      • 10:55 → 11:00
        Release planning, tests and certification 5m
        DIRAC PRs
        google forum
      • 11:00 → 11:15
        Weekly development(s) focus 15m
      • 11:15 → 11:25
        AOB
        Convener: Federico Stagni (CERN)
      • 11:25 → 11:40
        LHCbDIRAC 15m