Southwest Tier 2 Center Status Report U S

Overview The Southwest Tier 2 Center is a collaboration between the University of Texas

UTA CC Hardware Configuration q 160 compute nodes: Ø Dual Xeon EM 64 T,

UTA DPCC Hardware Configuration q Shared resource with CSE department q 75 compute nodes:

OCHEP Hardware Configuration q 40 compute nodes: Ø Dual Xeon EM 64 T, 3.

Additional OU Resources q Current OSCER cluster, boomer: Ø 135 dual Xeon nodes, 2

Network Connectivity q UTA: Gigabit link to the North Texas Gigapop Ø OC 12

Activities Since UC Meeting (May) q New cluster at UTA CC now on-line (though

IBRIX Issues / Status at UTA CC Scaling issues observed with IBRIX when the

Analysis Activities q Two workshops have been held at UTA (March & May) to

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Southwest Tier 2 Center Status Report U. S. ATLAS Tier 2 Workshop - Harvard Mark Sosebee for the SWT 2 Center August 17, 2006 Mark Sosebee

Overview The Southwest Tier 2 Center is a collaboration between the University of Texas at Arlington (UTA) and the University of Oklahoma (OU) Personnel: q UTA: Kaushik De, Patrick Mc. Guigan, Victor Reece, Mark Sosebee q OU: Karthik Arunachalam, Horst Severini, Pat Skubic August 17, 2006 Mark Sosebee

UTA CC Hardware Configuration q 160 compute nodes: Ø Dual Xeon EM 64 T, 3. 2 GHz, 4 GB RAM, 160 GB Disk q 8 front-end nodes: Ø Dual Xeon EM 64 T, 8 GB RAM, 73 GB SCSI Raid 1 q 16 TB SAN storage (IBRIX): Ø 80 x 250 GB SATA disks Ø 6 I/O servers, 1 management server q 16 TB potential in compute nodes August 17, 2006 Mark Sosebee

UTA DPCC Hardware Configuration q Shared resource with CSE department q 75 compute nodes: Ø Dual Xeon 2. 4 -2. 6 GHz Ø 2 GB RAM Ø 60 -80 GB local disks q 45 TB among 10 NFS servers (IDE RAID) q Typically ~100 ATLAS production queue slots August 17, 2006 Mark Sosebee

OCHEP Hardware Configuration q 40 compute nodes: Ø Dual Xeon EM 64 T, 3. 2 GHz, 4 GB RAM, 160 GB Disk q 2 front-end nodes: Ø Dual Xeon EM 64 T, 8 GB RAM, 73 GB SCSI Raid 1 q 4 TB SAN storage (IBRIX): Ø 20 x 250 GB SATA disks Ø 2 I/O servers, 1 management server q 4 TB potential in compute nodes August 17, 2006 Mark Sosebee

Additional OU Resources q Current OSCER cluster, boomer: Ø 135 dual Xeon nodes, 2 GHz Ø 5 TB storage Ø Used for D-zero MC production & data processing q New OSCER cluster, topdawg: Ø 512 dual Xeon EM 64 T nodes, 3. 2 GHz Ø 10 TB storage Ø Will be used for ATLAS Tier 2 & D-zero computing a. s. a. p. August 17, 2006 Mark Sosebee

Network Connectivity q UTA: Gigabit link to the North Texas Gigapop Ø OC 12 from NTG to Houston peering site (I 2) Ø Future: LEARN / NLR Ø q OU: Campus backbone 10 Gbps Ø Connection to NLR via One. Net Ø Current connection is OC 12 to Gigapop in K. C. Ø August 17, 2006 Mark Sosebee

Activities Since UC Meeting (May) q New cluster at UTA CC now on-line (though we’re not as yet running at full capacity…) q Large effort devoted to DQ 2 upgrade q SC 4 d. Cache setup – it works, with a couple of caveats – learned much about the system for potential future deployments q http: //www. atlas-swt 2. org/twiki/bin/view/SWT 2/Web. Home August 17, 2006 Mark Sosebee

IBRIX Issues / Status at UTA CC Scaling issues observed with IBRIX when the number of running jobs exceeds ~ 150 Ø Lost files Ø One segment server becomes a “hot-spot” q IBRIX tech supports recommends: Ø Upgrade software to v 2 Ø Reconfigure storage – one large filesystem rather than current two q Software upgrade scheduled for end of August q August 17, 2006 Mark Sosebee

Analysis Activities q Two workshops have been held at UTA (March & May) to promote physics analysis for ATLAS groups in the SWT 2 region q Participants: UTA OU, UNM, Langston, SMU, UT Dallas, LTU q Bi-weekly video / phone meetings q See: http: //indico. cern. ch/category. Display. py? categ. Id=885 August 17, 2006 Mark Sosebee