U S ATLAS Facility Planning U S ATLAS

U. S. ATLAS Facility Planning U. S. ATLAS Tier-2 & Tier-3 Meeting at SLAC 30 November 2007

Planning ahead … Ø Scope: ~6 months Ø Milestones and Items on the following slides are guided by Production and Analysis needs Ø U. S. ATLAS Computing Integration Program will translate them into the technical steps sites have to perform M. Ernst Tier-2/3 Meeting at SLAC 28 November 2007 2

Analysis Ø Analysis at Tier-2 s q Implement analysis queues at all 5 Tier 2's o q Complete by 15 December Replicate all R 13 AOD's (and some selected R 12 AOD's) to all
Tier 2's o o How much space is needed at each Tier-2 Who makes decision on datasets? Who makes subscriptions and runs DDM operations? Complete by 31 December v Demonstrate automatic redirection of analysis jobs to all
Tier 2's by pathena v 15 January M. Ernst Tier-2/3 Meeting at SLAC 28 November 2007 3

Analysis Ø Interactive Analysis q BNL PROOF farm available to all US ATLAS users for testing o q BNL PROOF farm in production mode o q q Complete 31 January Complete 31 March Tier 2 PROOF farms available o Complete 30 June o Does this fit our model (User account management etc. )? Support Tier-3 activities as part of the Computing Integration Meeting o M. Ernst Immediately, ongoing Tier-2/3 Meeting at SLAC 28 November 2007 4

Storage Services Ø At Tier-1 q Evaluate Pinning with SRM v 2. 2 o q Propose data placement plan for data at Tier 1, including
pinning, disk only partitions etc o q Complete 21 December User space management at Tier 1, including
user management, cache cleanup o o q Complete 31 January Develop and deploy disk-only d. Cache space management tools o q Complete 15 January Disk space reconfiguration according to computing model o q Complete by 31 December Develop and deploy software necessary to mange pinned files o q Complete by 21 December Proposal: Complete 31 December Deployment: 31 January LFC o Test system deployed: Complete 31 December Test system production ready: 31 January o Migration to LFC completed for US, assuming successful
tests: 28 February o M. Ernst Tier-2/3 Meeting at SLAC 28 November 2007 5

U. S ATLAS Data Ø Data Management q Deploy storage quota system US ATLAS wide o q DQ 2 data deletion fully operational o q Complete by 28 February Complete by 15 December Complete DQ 2 lost file tagging for US o Complete 15 January Ø What is data flow model in Pathena? Ø What if researcher produces data at Tier 3? Ø How is the decision to archive made? Ø Are Tier 2’s expected to maintain precious data indefinitely? Ø User Data Lifetime? Ø Consistency Checks? M. Ernst Tier-2/3 Meeting at SLAC 28 November 2007 6

Operations & Performance Ø Incident tracking / Communication q Elog deployed & operational o Complete 15 December Ø Performance Demonstrate 2007 WLCG pledge with 90% average efficiency o Complete 31 December q Demonstrate 90% 2008 WLCG pledge q o o M. Ernst Complete 30 June Contingent to funding situation Tier-2/3 Meeting at SLAC 28 November 2007 7

Next Meeting Ø Jointly with OSG All-Hands Meeting at RENCI (Chapel Hill, North Carolina) q 3 - 5 March 2008 M. Ernst Tier-2/3 Meeting at SLAC 28 November 2007 8