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Data Logistics and the CMS Analysis Model

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dc.contributor.author Managan, Julie E.
dc.date.accessioned 2009-05-07T15:37:00Z
dc.date.available 2009-05-07T15:37:00Z
dc.date.issued 2009-04-20
dc.identifier.uri http://hdl.handle.net/1803/2945
dc.description Honors in Physics
dc.description.abstract The Compact Muon Solenoid Experiment (CMS) at the Large Hadron Collider (LHC) at CERN has brilliant prospects for uncovering new information about the physical structure of our universe. Soon physicists around the world will participate together in analyzing CMS data in search of new physics phenomena and the Higgs Boson. However, they face a significant problem: with 5 Petabytes of data needing distribution each year, how will physicists get the data they need? How and where will they be able to analyze it? Computing resources and scientists are scattered around the world, while CMS data exists in localized chunks. The CMS computing model only allows analysis of locally stored data, "tethering" analysis to storage. The Vanderbilt CMS team is actively working to solve this problem with the Research and Education Data Depot Network (REDDnet), a program run by Vanderbilt's Advanced Computing Center for Research and Education (ACCRE). I participated in this effort by testing data transfers into REDDnet via the gridFTP server, a File Transfer Protocol which incorporates an LHC Computing Grid security layer. I created a test suite which helped identify and solve a large number of problems with gridFTP. Once optimized, I achieved sustained throughputs of 700-800 Megabits per second (Mbps) over a 1 Gigabit per second (Gbps) connection, with remarkably few failures. GridFTP is the gateway between REDDnet and CMS, and my tests were designed to exercise and harden this important tool. My results support other indications that the REDDnet system will be a successful solution to the limitations of data-tethering in the CMS computing model. en
dc.language.iso en_US en
dc.publisher Vanderbilt University. Dept. of Physics and Astronomy en
dc.subject CMS en
dc.subject REDDnet en
dc.subject GridFTP en
dc.subject Data logistics en
dc.subject Data storage en
dc.subject.lcsh Solenoids en
dc.subject.lcsh Higgs bosons en
dc.subject.lcsh Muons en
dc.subject.lcsh Large Hadron Collider (France and Switzerland) en
dc.title Data Logistics and the CMS Analysis Model en
dc.type Thesis en
dc.description.college College of Arts and Science
dc.description.department Department of Physics and Astronomy


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