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Simulation Production at UTD

Simulation Production at UTD. Shuwei YE, UT-Dallas DOE Review, Nov. 17, 2004. Outline. SP5  SP6 migration Operation challenges UTD Production Preparation for SP6  SP7 migration. SP5  SP6 migration. Started in the end of Jan-2004

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Simulation Production at UTD

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  1. Simulation Production at UTD Shuwei YE, UT-Dallas DOE Review, Nov. 17, 2004

  2. Outline • SP5  SP6 migration • Operation challenges • UTD Production • Preparation for SP6  SP7 migration

  3. SP5  SP6 migration • Started in the end of Jan-2004 • Smooth in general owing to last experience • Big changes in production • Problem with merging and export

  4. Big changes in SP6 • No evt database, in ROOT format • Cond/cfg database only • Automatic transfer and cleanup  non-stop production • Replace bbftp with bbcp because of file fragments in bbftp

  5. Trouble shooting in SP • Objy-NFS lives with disk automount: • Trouble with spmerge, spexport: solved by “LD_LIBRARY_PATH” • spmerge failure in August caused by a VERY RARE case: a node failed just before a job was done

  6. Hardware challenges • Occasional corrupt disk and bad memory we have spare disk, but no spare memory • A/C failures: July 2004, September 2004 • Power outage: electrical infrastrure upgrade • Corrupt file system  loss of database and useful scripts

  7. Hardward Problems • A/C problem (addressed in Xinchou’s talk) • Old RAID problem (spare disks available) • Rare unexpected power outage (could damage databases)

  8. UTD SP6 production Power Upgrade Official Report UTD is No. 2 in the world before August

  9. UTD total production UTD total production • 180 Million SP6 events • 170 Million SP5 events • 70 Million SP4 events

  10. SP7 preparation Major changes besides routine updates • Objy 7.2  8.0.9 (wait until SP7 is ready) • Operating System: RHEL or SL We did testing on SL and have passed SP6 validation.

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