CMS @ GridKa Summer 2010 T. Kress, G.Quast, A. Scheurer

1. CMS @ GridKa Summer 2010 T. Kress, G.Quast, A. Scheurer 2 PB GridKa took its share of CMS T1 computing: - data import from T0 (250 TB of 2000 TB total) - MC import from T2 (200 TB of 2000 TB total) - and data processing(typically 10% of jobs) - data export to T1 and T2(900 TB of 8000 TB total) Since Aug. 2010 also MC production @ T1s including GridKa Some general („cooling incident“) and CMS-specific problems (dCache head node, re-configuration of VOMS-roles) caused efficiency loss Overall: first LHC data taking period successfully mastered at GridKa !keeping efficiency high requires careful and steady monitoringsupport and fast reaction by GridKa staff essential • Migration of data from old to new dCache instance finished on Nov. 23rd almost 500'000 files (600 TB) copied • Data consistency check showed only minor problems • Import of first LHC collision data without any problems • Smooth running over Christmas – low job activity, but ~30 TB import of MC from Tier2s • Marian Zvada started his job as CMS admin on Feb. 1st, cofinanced by GridKa and EKP(BMBF) • Have taken up frequent „GridKa monitoring shifts“ during initial phase of LHC data taking • GridKa was ready for first 7 TeV collision data, first re-processing and data distribution campain very successful: • Migration of data from old to new dCache instance finished on Nov. 23rd almost 500'000 files (600 TB) copied • Data consistency check showed only minor problems • Import of first LHC collision data without any problems • Smooth running over Christmas – low job activity, but ~30 TB import of MC from Tier2s • Marian Zvada started his job as CMS admin on Feb. 1st, cofinanced by GridKa and EKP(BMBF) • Have taken up frequent „GridKa monitoring shifts“ during initial phase of LHC data taking • GridKa was ready for first 7 TeV collision data, first re-processing and data distribution campain very successful: • Migration of data from old to new dCache instance finished on Nov. 23rd almost 500'000 files (600 TB) copied • Data consistency check showed only minor problems • Import of first LHC collision data without any problems • Smooth running over Christmas – low job activity, but ~30 TB import of MC from Tier2s • Marian Zvada started his job as CMS admin on Feb. 1st, cofinanced by GridKa and EKP(BMBF) • Have taken up frequent „GridKa monitoring shifts“ during initial phase of LHC data taking • GridKa was ready for first 7 TeV collision data, first re-processing and data distribution campain very successful: • Migration of data from old to new dCache instance finished on Nov. 23rd almost 500'000 files (600 TB) copied • Data consistency check showed only minor problems • Import of first LHC collision data without any problems • Smooth running over Christmas – low job activity, but ~30 TB import of MC from Tier2s • Marian Zvada started his job as CMS admin on Feb. 1st, cofinanced by GridKa and EKP(BMBF) • Have taken up frequent „GridKa monitoring shifts“ during initial phase of LHC data taking • GridKa was ready for first 7 TeV collision data, first re-processing and data distribution campain very successful:

2. D-CMS @ GridKa Summer 2010 Jobs by German CMS users (D-CMS) play an increasingly significant role at GridKa • Dedicated jobs slots for VOMS role DCMS had been used since long German CMS computing team porposed and implemented concept to usenational resources @ GridKa • New: - tape and disk storage made availale by GridKa - twiki for German CMS users set up - improved monitoring: publish data sets available on disk at GridKa - disk-only space to be used as temporary storage for local and remote job output for user analyis - tape storage to be accessed by German data admins only to archive analysis data sets ~20% of CMS jobs in September were D-CMS National Jobs @ GridKa in September