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  <doc>
    <id>762</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>reportzib</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2003-11-26</completedDate>
    <publishedDate>2003-11-26</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Progressive Retrieval and Hierarchical Visualization of Large Remote Data</title>
    <abstract language="eng">\noindent The size of data sets produced on remote supercomputer facilities frequently exceeds the processing capabilities of local visualization workstations. This phenomenon increasingly limits scientists when analyzing results of large-scale scientific simulations. That problem gets even more prominent in scientific collaborations, spanning large virtual organizations, working on common shared sets of data distributed in Grid environments. In the visualization community, this problem is addressed by distributing the visualization pipeline. In particular, early stages of the pipeline are executed on resources closer to the initial (remote) locations of the data sets. \noindent This paper presents an efficient technique for placing the first two stages of the visualization pipeline (data access and data filter) onto remote resources. This is realized by exploiting the ``extended retrieve'' feature of GridFTP for flexible, high performance access to very large HDF5 files. We reduce the number of network transactions for filtering operations by utilizing a server side data processing plugin, and hence reduce latency overhead compared to GridFTP partial file access. The paper further describes the application of hierarchical rendering techniques on remote uniform data sets, which make use of the remote data filtering stage.</abstract>
    <identifier type="serial">03-40</identifier>
    <identifier type="opus3-id">763</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-7623</identifier>
    <enrichment key="SourceTitle">Appeared in: Proc. 2003 Workshop on Adaptive Grid Middleware, September 2003, pp. 60-72</enrichment>
    <author>Hans-Christian Hege</author>
    <author>Andrei Hutanu</author>
    <author>Ralf Kähler</author>
    <author>André Merzky</author>
    <author>Thomas Radke</author>
    <author>Edward Seidel</author>
    <author>Brygg Ullmer</author>
    <series>
      <title>ZIB-Report</title>
      <number>03-40</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>remote data access</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>large files</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>visualization pipeline</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>hdf5</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>grid</value>
    </subject>
    <collection role="ddc" number="000">Informatik, Informationswissenschaft, allgemeine Werke</collection>
    <collection role="ccs" number="C.2.4">Distributed Systems</collection>
    <collection role="ccs" number="I.4.m">Miscellaneous</collection>
    <collection role="ccs" number="I.6.6">Simulation Output Analysis</collection>
    <collection role="pacs" number="07.05.Kf">Data analysis: algorithms and implementation; data management (for data analysis in nuclear physics, see 29.85.-c)</collection>
    <collection role="institutes" number="">ZIB Allgemein</collection>
    <collection role="persons" number="hege">Hege, Hans-Christian</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/762/ZR-03-40.ps</file>
    <file>https://opus4.kobv.de/opus4-zib/files/762/ZR-03-40.pdf</file>
  </doc>
</export-example>
