Swiss WLCG Operations Meeting on 20100715
Agenda
- Site status
- WLCG Workshop in London last week
- CreamCE
- Report on German Atlas Cloud Meeting
- CMS vobox
- AOB
Attendants
- ATLAS: Marc Goulette
- CMS: Leonarda Sala
- LHCb: Roland Bernet
- CSCS: Pablo Fernandez, Peter Oettl
Minutes
- Site Status (PF)
- mostly running fine
- some Lustre errors which are mostly transparent to users
- PBS at some point fails creating tmp directories; mds failover "solves" the problem
- under inverstigation; also opened ticket to Sun support
- Some Atlas jobs put high laod on mds which slows down other jobs
- WLCG Workshop in London last week. http://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=82919
- It's better to have a local BDII-top for job reliability
- Is there a way to see if users gravitate out of our site? According to the VOs this is not happening
- ATLAS
- no user blacklisting
- only during downtime or major problems
- MG happy with CSCS; faster than other sites
- CMS
- cms users are quite happy
- no user blacklisting at least from Swiss physics community
- LHCb
- users can't blacklist
- centrally only during downtimes or major problems --> ticket
- The storage model is under discussion, maybe the push model is not good enough and would be good to have some pull/caching mechanisms
- Altas complained about the storage pledges in Tier2s, they only provide 75% of the pledges. We were one of the red sites, but all free space was assigned to the VOs and now we're fine.
- The experiment software is creating troubles to sites. NFS is not the best place nor it is Lustre. Looks like CernVmFs could be a good solution.
- Having 10 Gbps bandwidth is about three times more than we're required to, very good feedback.
- CREAM-CE (PO)
- hostname: cream02.lcg.cscs.ch
- installation was pretty smooth
- up for a week
- processed about 5000 jobs; mostly CMS
- VO reps should tell their VOs that it's available for testing
- German Atlas Cloud Meeting (MG)
Action Items
- VO Reps: announce cream02 available for testing
This topic: LCGTier2
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Topic revision: r8 - 2011-01-13 - PabloFernandez