SuperB – INFN-Bari Giacinto DONVITO

Site configuration ~ 1000 Core shared among several VO/groups 10% of this resources could be used by “not founding” VOs Farm accessible both from local batch system and grid Two different CEs: lcg-CE and CREAM-CE ~500TB of storage Available locally with Lustre (distributed) file-system We provide SRM end-point by means of a StoRM installation

Experience on supporting SuperB The farm is reconfigured to support also SuperB activities: The required list of (32bit) libraries where installed on all the WN Exploiting a local tool that enforces the consistency between WNs The Lustre file-system is configured such a way that the SuperB users could access both using SRM interface and locally to the SuperB area Reading from lustre as a local file-system is already possible Specific ACLs are configured in order to allow also writing on lustre without using SRM interface This will increase the performance and the reliability in writing the output

Problems encountered Writing to lustre file-system requires particular set-up of “umask” at user level Long jobs failing due to a configuration error at site level => Fixed!

SuperB activity: future In the future, Bari will join the distributed computing infrastructure in order to provide Tier1 computational resources to SuperB experiment Both network (1Gbit/s now, 10Gbit/s in the near future) and the infrastructure will easily fit with the requirement of the experiment TIER-1