July meeting Wednesday 11th July
Welcome (Michel Jouvin)
• September meeting to include IPv6, LS1 and extended run plans
• EMI-2 WN testing also in September
CVMFS deployment status (Ian Collier)
• Recap; 78/104 sites for ATLAS – the UK looks good thanks to Alessandra
• Using two repos for ATLAS. Local shared area will be dropped in future.
• 36/86 for LHCb. Two WN mounts. Pref for CVMFS – extra work
• 5 T2s for CMS. Info for sites https://twiki.cern.ch/twiki/bin/view/CMSPublic/CompOpsCVMFS
• Client with shared cache in testing
• Looking at NFS client and MAC OS X
Pre-GDB on CE Extensions (Davide Salomoni)
• https://indico.cern.ch/conferenceDisplay.py?confId=196743
• Goal – review proposed extensions + focus on whole-node/multi-core set
• Also agree development plan + timeline for CEs.
• Fixed cores and variable number of cores + mem requirements. May impact expt. frameworks.
• Some extra attributes added in Glue 2.0 – e.g. MaxSlotsPerJob
• JDL. Devel. Interest. Queue level or site level.
• How. CE implementations. Plan. Actions.
Initial Meeting with EMI, EGI and OSG (Michel Jouvin)
• ID issues related to end of supporting projects (e.g. EMI)
• Globus (community?); EMI MW (WLCG); OSG; validation
• Discussion has not included all stakeholders.
How to identify the best top level BDIIs (Maria Alandes Pradillo)
• Only 11% are “properly” configured (LCG_GFAL_INFOSYS 1,2,3)
• UK BDIIs appear in top 20 of ‘most configured’.
MUPJ – gLEexec update (Maarten Litmaath)
• ‘glexec’ flag in GOCDB for each supporting CE
•
• http://cern.ch/go/PX7p (so far… T1, Brunel, IC-HEP, Liv, Man, Glasgow, Ox, RALPP)
Improved instructions: https://twiki.cern.ch/twiki/bin/view/LCG/GlexecDeployment
• CMS ticketing sites. Working on GlideinWMS.
WG on Storage Federations (Fabrizio Furano)
• Federated access to data – clarify what needs supporting
• ‘fail over’ for jobs; ‘repair mechanisms’; access control
• So far XROOTD clustering through WAN = natural solution
• Setting up group.
DPM Collaboration – Motivation and proposal (Oliver Keeble)
• Context. Why. Who…
• UK is 3rd largest user (by region/country)
• Section on myths: DPM has had investment. Not only for small sites…
• New features: HTTP/WebDAV, NFSv4.1, Perfsuite…
• Improvements with xrootd plugin
• Looking for stakeholders to express interest … expect proposal shortly
• Possible model: 3-5 MoU or ‘maintain’
Update on SHA-2 and RFC proxy support
• IGTF wish CAs -> SHA-2 signatures ASAP. For WLCG means use RFC in place of current Globus legacy proxies.
• dCache & BestMan may look at EMI Common Authentication Library (CANL) – supports SHA-2 with legacy proxies.
• IGTF aim for Jan 2013 (then takes 395 days for SHA-1 to disappear)
• Concern about timeline (LHC run now extended)
• Status: https://twiki.cern.ch/twiki/bin/view/LCG/RFCproxySHA2support
• Plan deployed SW support RFC proxies (Summer 2013) and SHA-2 (except dCache/BeStMan – Summer 2013). Introduce SHA-2 CAs Jan 2014.
• Plan B – short-lived WLCG catch-all CA
ARGUS Authorization Service (Valery Tschopp)
• Authorisation examples & ARGUS motivation (many services, global banning, policies static). Can user X perform action Y on resource Z.
• ARGUS built on top of a XACML policy engine
• PAP = Policy Administration Point. Tool to author policies.
• PDP = Policy Decision Point (evaluates requests)
• PEP = Policy Execution Point (reformats requests)
• Hide XACML with Simplified Policy Language (SPL)
• Central banning = Hierarchical policy distribution
• Pilot job authorization – gLEexec executes payload on WN
https://twiki.cern.ch/twiki/bin/view/EGEE/AuthorizationFramework
Operations Coordination Team (Maria Girone)
• Mandate – addresses needs in WLCG service coordination recommendations & commissioning of OPS and Tools.
• Establish core teams of experts to validate, commission and troubleshoot services.
• Team goals: understand services needed; monitor health; negotiate configs; commission new services; help with transitions.
• Team roles: core members (sites, regions, expt., services) + targeted experts
• Tasks: CVMFS, Perfsonar, gLEexec
Jobs with High Memory Profiles
• See expt reports.
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