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STAR environment on OS X

Updated on Wed, 2008-02-27 14:10. Originally created by kocolosk on 2006-11-02 11:25. Under:

This page is obsolete -- please see Mac port of STAR offline software for the current status

In order of decreasing importance:

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Database Mirror

Updated on Wed, 2008-02-06 22:00. Originally created by kocolosk on 2006-11-02 11:20. Under:
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Xgrid

Updated on Wed, 2008-02-06 17:33. Originally created by kocolosk on 2006-11-02 11:16. Under:
Summary of Apple's Xgrid cluster software and the steps we've taken to get it up and running at MIT.
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MIT

Updated on Wed, 2008-02-06 17:32. Originally created by kocolosk on 2006-11-02 11:15. Under:

STAR Inner Silicon tracking detector committee report

Updated on Thu, 2006-11-02 10:13. Originally created by jeromel on 2006-11-02 10:10.

Reference


Talk time : 15:00, Duration : 00:20

AOB

Updated on Tue, 2006-10-31 10:46. Originally created by testadmin on 2006-10-31 10:45.

Reference

Speaker : All ( All )


Talk time : 14:20, Duration : 00:10

Run VII purchase follow-up and discussion

Updated on Tue, 2006-10-31 10:44. Originally created by testadmin on 2006-10-31 10:44.

Reference

Speaker : Jerome Lauret ( BNL )


Talk time : 14:00, Duration : 00:10

tripwire evaluation and configuration

Updated on Tue, 2006-10-31 10:45. Originally created by testadmin on 2006-10-31 10:44.

Reference

Speaker : Mike DePhillips ( BNL )


Talk time : 14:10, Duration : 00:10

Run VII preparation, meeting #6

Updated on Tue, 2006-10-31 10:46. Originally created by jeromel on 2006-10-31 10:41. Under:
-00-00
Thursday, 1 January 1970
, at 00:00 (GMT), duration : 00:00
TimeTalkPresenter
14:00Run VII purchase follow-up and discussion ( 00:10 ) 0 filesJerome Lauret (BNL)
14:10tripwire evaluation and configuration ( 00:10 ) 0 filesMike DePhillips (BNL)
14:20AOB ( 00:10 ) 0 filesAll (All)

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MIP check on 2006 Slope Calibration

Updated on Wed, 2007-03-21 09:05. Originally created by kocolosk on 2006-10-31 09:10. Under:

2006_mip-.pdf

2006_mip.txt

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Run 3 BTOW Calibration

Updated on Tue, 2006-10-31 08:55. Originally created by staruser on 2006-10-31 08:55. Under:

I plan on "Drupalizing" these pages soon, but for now here are links to Marco's slope calibration and Alex's MIP and Electron calibrations for the 2003 run:

Marco's tower slope calibration
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DC IOPerf 20061029 (time after) - jpg

Updated on Thu, 2009-02-12 15:52. Originally created by testadmin on 2006-10-29 15:21. Under:
DC IOPerf 20061029 (time after) - jpg

DC IOPerf 20061027 (time before) - jpg

Updated on Thu, 2009-02-12 15:54. Originally created by testadmin on 2006-10-29 15:17. Under:
DC IOPerf 20061027 (time before) - jpg

HPSS Error relative proportion, 2006-09

Updated on Sun, 2006-10-29 14:42. Originally created by testadmin on 2006-10-29 14:41. Under:
HPSS Error relative proportion, 2006-09

HPSS Error types 2006 09 W36

Updated on Sun, 2006-10-29 14:40. Originally created by testadmin on 2006-10-29 14:29. Under:
HPSS Error types 2006 09 W36

HPSS IO efficiency per file size and per

Updated on Thu, 2009-02-12 15:49 by testadmin. Originally created by jeromel on 2006-10-29 08:33. Under:
HPSS IO efficiency per file size and per

This graph has been extracted for an optimal 30 MB/s capable drive. Both file size and number of files per cartriges have been evaluated.

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HPSS Performance study

Updated on Mon, 2006-10-30 18:39. Originally created by jeromel on 2006-10-29 07:48. Under:

Introduction

HPSS is software that manages petabytes of data on disk and robotic tape libraries. We will discuss in this section our observations as per the efficiency of accessing files in STAR as per a snapshot of the 2006 situation. It is clear that IO opptimizations has several components amongst which:
  • Access pattern optimization (request ordering, ...)
  • Optimization based on tape drive and technology capabilities
  • Miscellaneous technology considerations
    (cards, interface, firmware and driver, RAID, disks, ...)
  • HPSS disk cache optimizations
  • COS and/or PVR optimization
However, several trend have already been the object of past research and we will point to some of those and compare to our situation rather than debating the obvious. Wewill try to keep a focus on measurements in our environment.

Tape drive and technology capabilities

A starting point would be to discuss the capabilities of the technologies involved and their maximum performance and limitations. In STAR, two technologies remain as per 1006/10:
  • the 994B drives
  • the LTO-3 drives

Access pattern optimization (request ordering, ...)

A first simple and immediate consideration is to minimize tape mount and dismount operations, causing latencies and therefore performance drops. Since we use the DataCarousel for most restore operations, let's summarize its features.

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Phi meson spin alignment wrt production plane / Global polarization of Lambda hyperons

Updated on Mon, 2006-11-06 15:42. Originally created by seluzhen on 2006-10-28 16:19.

Reference

Speaker : Ilya Selyuzhenkov ( WSU )


Talk time : 12:00, Duration : 00:30

Spin Alignment of vector mesons (K*, phi) in Au+Au collisions

Updated on Fri, 2006-11-03 20:54. Originally created by bedanga on 2006-10-28 16:18.

Reference

Speaker : Jinhui


Talk time : 11:30, Duration : 00:30

TEA BREAK

Updated on Sat, 2006-10-28 16:17. Originally created by bedanga on 2006-10-28 16:17.

Reference


Talk time : 11:00, Duration : 00:30