MeetingSwissWLCGOperations20101104 < LCGTier2

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---+ Swiss WLCG Operations Meeting on 2010-11-04
   * *Date and time*: 2010-11-04 at 9:30 CET
   * *Place*: evo, pass: chipp
   * *External link / EVO*: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=vsvivIeieDI2I2a9avItas

---++ Agenda
   * Cluster Status 
      * Please include a report on the Problems of Friday, Monday, Tuesday 
         * (Derek) Could an emergency procedure be documented enabling Jason or Derek (or smbd else) to restart services in cases like these, where both Peter and Pablo are not available?
      * Last security upgrades
      * CreamCE 
         * Bug in qsub that every now and then caused a crash. CSCS submitted a ticket to AdaptiveComputing
         * CREAM has had a bug fix which already has been installed at CSCS (CSCS being now in the staged rollout group for CREAM CE)
   * Users @ cscs UI 
      * (Derek): I would like to keep the possibility of opening user accounts (though we will not need them right now, I think). Use cases are 
         * users who want to debug applications locally (dcap can only be used locally)
         * possibility of directly interacting with dcache through a mounted PNFS should not be totally neglected. May become attractive at some point to allow users to organize their files through normal unix commands (but at least with dcache, that may take some time)
   * Closure of queues before downtimes: ReduceClosureTimeQueues
   * Next scheduled maintenance: [[Maintenance2010x11x08]]
   * ATLAS HammerCloud tests: http://ce.lhep.unibe.ch/gsciacca/tmp/talks/CSCS-SiteReport-Nov10HC.pdf
   * ATLAS batch priorities (prd:plt:user): http://ce.lhep.unibe.ch/gsciacca/tmp/talks/CSCS-SiteReport-Nov10Stats.pdf
   * AOB
      * (Derek) EGI hosts a Jabber service. Instructions you can find here: http://www.egi.eu/about/intranet/.  Andres Aeschlimann can be reached via chat, there.

---++ Attendants
   * CMS: Derek
   * Atlas: Marc, Gianfranco, Szymon
   * CSCS: Peter, Pablo

---++ Minutes
   * We agreed to create an emergency restart twiki page for the CE, since it's getting very complex and it's not easy to handle for people outside CSCS.
   * CSCS will take full control of the users in the Tier2, as discussed in previous emails.
   * A HC test was performed in the site, and it turns out that filestager is better than direct-io. Gianfranco is going to repeat the tests anyway next week, to see if they match previous conclussions.

---++ Review action items

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who
jpg	HC_test1.jpg	r1	manage	225.1 K	2010-11-04 - 09:28	PabloFernandez
jpg	HC_test2.jpg	r1	manage	230.3 K	2010-11-04 - 09:28	PabloFernandez
jpg	HC_test3.jpg	r1	manage	222.5 K	2010-11-04 - 09:28	PabloFernandez