Introduction to U.S. ATLAS Facilities Rich Baker Brookhaven National Lab.

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Presentation transcript:

Introduction to U.S. ATLAS Facilities Rich Baker Brookhaven National Lab

10/17/2015 R. Baker US ATLAS Computing Workshop 2 Tier 1 Facility at BNL  Home Page:  Note Link – New Users: Getting Started Guide  Also – Submit Problem Report  ~60 Dual Processor Linux Nodes  16 Available for Interactive Login  Limited Temporary Local Disk Space /home/tmp/  ~10 TB NFS Disk Space – Visible from All Nodes  250 GB Home Directories: /usatlas/u/, Initial 500 MB Quota  500 GB Work Area: /usatlas/workarea/  870 GB Scratch: /usatlas/scratch/  ~500 GB AFS Disk Space – Accessible Worldwide  User Directories: /afs/usatlas/users/, Initial 200 MB Quota  HPSS Tape System  LSF and CONDOR Batch Systems

10/17/2015 R. Baker US ATLAS Computing Workshop 3 Facility Network/Firewall E450 (NFS Server) Dual Intel HPSS CORE Server Backup Server US ATLAS HPSS Server atlas00.usatlas.bnl.gov ~10 TBytes FibreChannel RAID Disk US ATLAS Tier 1 Facility 62 Intel/Linux Dual 1GHz/700/450 MHz 100 Mbit Ethernet 9940 Tape Drive US ATLAS AFS Servers AFS ~500 GBytes RAID Disk US ATLAS Equipment RCF Infrastructure ~50 GBytes JBOD Disk Web Servers RCF Tape Silo SSH Gateways Gigabit Capable US ATLAS Switch NIS/DNS/DTS Servers Gigabit Connections to Data Servers RCF LAN OC12 WAN atlas02.usatlas.bnl.gov

10/17/2015 R. Baker US ATLAS Computing Workshop 4 Access to the Tier 1 Facility  For Interactive Login, You MUST Use SSH  Free (Windows) SSH Client Available at  > ssh atlasgw.bnl.gov  SSH Gateway Nodes – Very Minimal Services  To Login to Linux Farm:  > rterm -i acas+  This takes you to least loaded interactive node  Kerberos 5 and AFS tokens automatically created .cshrc Will Set Up “Standard” HEP Environment  Copy /afs/usatlas/users/rbaker/.cshrc if Needed

10/17/2015 R. Baker US ATLAS Computing Workshop 5 User Web Pages  Primary US ATLAS Web Server  User Pages Can Be Created  In Your AFS Area, Create: /afs/usatlas/users/username/WWW/  This Directory is Visible as:  200 MB Initial Quota on Your AFS Area

10/17/2015 R. Baker US ATLAS Computing Workshop 6 File Transfers to Other Sites  Special Gateway Node: aftpexp.bnl.gov  Currently the supported transfer methods on the network transfer servers are as follows:  SCP  SFTP  Ssh protected FTP  BBFTP (Preferred for Large Files)  Outbound FTP  Documentation: