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LHC Tier 2 Networking BOF. Joe Metzger [email protected] Joint Techs Vancouver 2005. LHC: Accelerator at CERN. Used by physicists from around the world. http://www.ilrasoiodioccam.it/articoli/lhc.html. http://hepweb.rl.ac.uk/ppUKpics/images/POW/1999/990303.jpg.

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LHC Tier 2 Networking BOF

Joe Metzger

[email protected]

Joint Techs Vancouver 2005

lhc accelerator at cern used by physicists from around the world
LHC: Accelerator at CERN.Used by physicists from around the world.

http://www.ilrasoiodioccam.it/articoli/lhc.html

north american lhc site hierarchy
North American LHC Site Hierarchy
  • Tier 0 CERN
  • Tier 1 Regional Archive & Analysis
    • US
      • Brookhaven ATLAS
      • FERMI CMS
    • Canada
      • TRIUMF ATLAS
  • Tier 2 Analysis Centers
    • Universities
data challenges
Data Challenges
  • SC1: initial tests between some Tier-1 sites and CERN. Datafiles transported from disk to disk using globus_url_copy. Date: December 2004. Result: tests were done with BNL, CCIN2P3, Fermilab, FZK and SARA.
  • SC2: sustained file transfers with an aggregated rate of 500 MByte/sec out of CERN. Disk to disk using software components from the radiant service at CERN. Participating sites: CCIN2P3, CNAF, Fermilab, FZK, RAL, SARA. Date: last two weeks of March 2005.
  • SC3: sustained file transfer simultaneously to 6 Tier-1 sites. Disk to tape (at 60 MByte/sec) using SRM. Participating sites: CCIN2P3, CNAF, Fermilab, FZK, RAL, SARA. Date: July 2005.

http://lcg.web.cern.ch/LCG/PEB/gdb/ServiceChallenges.htm

data challenges1
Data Challenges
  • SC4: sustained file transfer simultaneously to all 10 Tier-1 and some Tier-2 sites. Inclusion of data processing on farms at CERN and at the Tier-1 sites. Date: Q4 2005
  • SC5: the whole infrastructure of Tier-1 and Tier-2 sites in place. Simulated data movements between all partners. Date: Q1 2006
  • SC6: test of the whole infrastructure at twice the nominal rate. Date: Q2 2006
  • SC7: test of the whole infrastructure with real (cosmic) data from the experiments

http://lcg.web.cern.ch/LCG/PEB/gdb/ServiceChallenges.htm

atlas tier 2 sites bnl
ATLAS Tier 2 Sites BNL
  • University of Texas at Arlington
  • University of Oklahoma
  • University of New Mexico
  • Langston University
  • University of Chicago
  • Indiana University
  • Boston University
  • Harvard University
  • University of Michigan

http://lcg.web.cern.ch/LCG/PEB/gdb/LCG-Tiers.htm

cms tier 2 sites fermi
CMS Tier 2 Sites FERMI
  • MIT
  • University of Florida, Gainesville
  • University of Nebraska, Lincoln
  • University of Wisconsin, Madison
  • Caltech
  • Purdue University
  • University of California, San Diego

http://lcg.web.cern.ch/LCG/PEB/gdb/LCG-Tiers.htm

atlas tier 2 sites triumf
ATLAS Tier 2 Sites TRIUMF
  • University of Victoria
  • WestGrid
  • University of Alberta
  • University of Toronto
  • Carleton University
  • University de Monreal

http://lcg.web.cern.ch/LCG/PEB/gdb/LCG-Tiers.htm

data challenge survey
Data Challenge Survey
  • Sent to Network contacts at Universities
  • Questions
    • Expected 05 Data Rates for long flows
    • Expected 06 Data Rates for long flows
    • Upstream Provider
    • Light Paths
    • Contact Info
tier 2 light path plans
Tier 2 Light Path Plans
  • U Texas
    • No
  • U Chicago
    • Initially not, though we do have capabilities to do so. At UC, we connect to Starlight via optical links provided by I-WIRE.
  • Indiana U.
    • Initially not, though we do have capabilities to do so.
  • Caltech
    • We\'ll experiment on-demand network path setup dynamically using Monalisa service agents and GMPLS.
  • U Michigan
    • We are an UltraLight collaborating site and will utilize dedicated light-paths, QoS/MPLS and high-performance protocols (like FAST) to do our Service Challenge work.
summary
Summary

Synopsis of LHC Tier 2 Networking

Web Page

Mailing list to discuss US LHC networking.

[email protected]

Send message to [email protected] with a subject of “subscribe lhc-us-net”

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