r16 - 06 Feb 2008 - 13:44:39 - CharlesWaldmanYou are here: TWiki >  Admins Web > MinutesTPJan7

MinutesTPJan7

Introduction

Minutes of the Facilities Integration Program meeting focusing on Throughput, January 7, 2008.
  • Objectives: 200 MB/s throughput sustained disk-to-disk Tier1-Tier2
  • Other meetings and background : IntegrationProgram
  • Coordinates: Mondays, 2:00pm Eastern
    • Phone: (605) 475-6000, Access code: 735188; Dial 6 to mute/un-mute.
  • Check out status via the BNL/SLAC netflow plots at Tier-2 Netflow

Attending

  • Meeting attendees: tbd
  • Apologies:

Overview (Shawn)

Discuss current and near-term future plans for throughput testing.

  • Status report on "load testing": Hiro
  • 200MB/s for 20 minutes has been attained for AGLT2. This can be seen in
    traffic_bnl_um.gif
  • Discussion of current testing and implication for normal data operations: All
  • Status of Jay's testing and any changes required based upon current results: Jay
    • Hiro saw a drop of data transfer rates after transferring 2GB using FTS but Jay saw erratic rates using 3GB glite-url-copy to uct2-dc3.uchicago.edu: 3, 23, 9, 25, 10, 18 MB/s and relatively even 3GB glite-url-copy to umfs05.aglt2.org of 75, 75, 75, 76, 47, 65, 66, 64 MB/s.
    • Cannot get enough samples for uct2-dc3.uchicago.edu using globus-url-copy
    • Transfer to other hosts using globus-url-copy are also even.
    • Still working on repository web site to easily provide live test results ro saw a drop of data transfer rates after transferring 2GB using FTS but Jay saw erratic rates using 3GB glite-url-copy to uct2-dc3.uchicago.edu: 3, 23, 9, 25, 10, 18 MB/s and relatively even 3GB glite-url-copy to umfs05.aglt2.org of 75, 75, 75, 76, 47, 65, 66, 64 MB/s.

Tier1 action items

  • Status of DDM system and architecture: Dantong
    • Is the current GridFTP? door config working OK?
    • Where are the bottlenecks?
    • Diagram of typical data movement for IN or OUT of BNL

AGLT2

  • Site report and plans: Wenjing

MWT2

  • Site report and plans: Sarah

NET2

  • Site report and plans: Saul?

SWT2

  • Site report and plans: Patrick or Horst?

WT2

  • Site report and plans: Wei

Wisconsin

  • Site report and plans: Bruce?

-- RobertGardner - 04 Jan 2008

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Attachments


gif traffic_bnl_um.gif (10.8K) | Main.hito, 07 Jan 2008 - 14:01 |
gif bnl_um_2.gif (11.3K) | Main.hito, 07 Jan 2008 - 13:50 | gridftp door throughput at BNL dCache during transfer to UM 500MB/s
gif load_generator1.gif (11.6K) | Main.hito, 07 Jan 2008 - 13:55 | gridftp door throughput at BNL dCache during transfer to AGLT2/MWT2/WT2 700MB/s
 
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