Review of weekly issues by experiment/VO
- LHCb
There are no major issues with the UK over the last week for LHCb. Very low load - primarily from users and not much monte carlo running over the last week. Interesting issues :
1. dCache-Root incompatibility forcing LHCb to ban all the dCache Tier-1s leaving us with only CERN, CNAF and RAL within the mask. The problem seems to be with Root developers changing their dCache plugin and we hope to have it fixed sometime this week.
2. A stop of DIRAC for 24 hours beginning later today to migrate to new, more resilient hardware with a new version of Dirac
- CMS
- ATLAS
- Any conclusions/feedback from the ATLAS T1/2/3 Jamboree? (http://indico.cern.ch/conferenceDisplay.py?confId=76900
). See the last talk link for Graeme's summary slides.
A couple things to note:
-- Chamonix workshop outcomes. 3.5TeV-3.5TeV collisions. Run until 1 fb-1 or end 2011. 2012 upgrades for higher LHC energies.
-- Machine development Nov/Dec 2009.
-- Expect 50% machine efficiency -> 12hrs/day. 4 days/month maintenance.
-- Since 15.6.3 release only build on SL5.
-- Memory usage improving - leveling at 2GB. Pile up event can reach 3GB. Suggestion is not to limit memory.
-- Some discussion about old releases at sites.
-- CREAM testing well underway. Suggestion is for any site with >1CE to have one on CREAM.