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APPLICATIONS: Math, Physical Sciences Physics |
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Bandwidth Gluttony: Distributed Grid-Enabled Particle Physics Event Analysis |
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![]() For iGrid, distributed databases located at ANL, StarLight, Caltech, CERN and other HEP institutions are used. As the collections are instantiated on the client machine in Amsterdam, ROOT analyzes the data, rendering the results in real time. The virtual data collections are catalogued using the Globus Replica Catalogue. This scheme is a preview of a general Grid-Enabled Analysis Environment that is being developed for CERN’s Large Hadron Collider (LHC) experiments. In a closely related part of the demonstration, an attempt is made to saturate a 10Gbps (OC-192) link between Amsterdam, ANL and StarLight and a 2.5Gbps (OC-48) link between Amsterdam and CERN, by using striped GridFTP channels, and specially tuned TCP/IP stacks. In this test, memory-cached data, in contrast to the file-based ROOT part of the demonstration, is used. Acknowledgment: Caltech wishes to acknowledge the following awards: USA Department of Energy DE-FC03-99ER25410 (PPDG) and DE-FG03-92-ER40701 (Caltech / CMS), and USA National Science Foundation 8002-48195 (ALDAP) and PHY-0122557 (iVDGL). ANL efforts are supported by the Mathematical, Information, and Computational Science Division subprogram of the Office of Advanced Scientific Computing Research, USA Department of Energy, under Contract W-31-109-Eng-38. Also acknowledged are The Globus Project, GriPhyN, PPDG, iVDGL, EU DataGrid and EU DataTAG. Contact Julian Bunn California Institute of Technology (Caltech), USA julian@cacr.caltech.edu William E. Allcock Argonne National Laboratory (ANL), USA allcock@mcs.anl.gov Collaborators William E. Allcock, John Bresnahan, Joe Link, Joe Insley, ANL, USA Julian Bunn, Iosif Legrand, Harvey Newman, Steven Low, Sylvain Ravot, Conrad Steenberg, Suresh Singh, Caltech, USA Jean-Philippe Flatin, CERN, Switzerland pcbunn.cacr.caltech.edu/iGrid2002/demo.htm |