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  <doc>
    <id>5640</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>reportzib</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2015-10-27</completedDate>
    <publishedDate>2015-10-27</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Solving Open MIP Instances with ParaSCIP on Supercomputers using up to 80,000 Cores</title>
    <abstract language="eng">This paper describes how we solved 12 previously unsolved mixed-integer program-&#13;
ming (MIP) instances from the MIPLIB benchmark sets. To achieve these results we&#13;
used an enhanced version of ParaSCIP, setting a new record for the largest scale MIP&#13;
computation: up to 80,000 cores in parallel on the Titan supercomputer. In this paper&#13;
we describe the basic parallelization mechanism of ParaSCIP, improvements of the&#13;
dynamic load balancing and novel techniques to exploit the power of parallelization&#13;
for MIP solving. We give a detailed overview of computing times and statistics for&#13;
solving open MIPLIB instances.</abstract>
    <identifier type="issn">1438-0064</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-56404</identifier>
    <identifier type="doi">10.1109/IPDPS.2016.56</identifier>
    <enrichment key="SourceTitle">Appeared in: Proc. of 30th IEEE International Parallel &amp; Distributed Processing Symposium</enrichment>
    <submitter>Yuji Shinano</submitter>
    <author>Yuji Shinano</author>
    <author>Tobias Achterberg</author>
    <author>Timo Berthold</author>
    <author>Stefan Heinz</author>
    <author>Thorsten Koch</author>
    <author>Michael Winkler</author>
    <series>
      <title>ZIB-Report</title>
      <number>15-53</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mixed Integer Programming</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Parallel processing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Node merging</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Racing ParaSCIP</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ubiquity Generator Framework</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>MIPLIB</value>
    </subject>
    <collection role="ccs" number="D.">Software</collection>
    <collection role="ccs" number="I.">Computing Methodologies</collection>
    <collection role="msc" number="68-XX">COMPUTER SCIENCE (For papers involving machine computations and programs in a specific mathematical area, see Section -04 in that area)</collection>
    <collection role="msc" number="90-XX">OPERATIONS RESEARCH, MATHEMATICAL PROGRAMMING</collection>
    <collection role="institutes" number="optimization">Mathematical Optimization</collection>
    <collection role="institutes" number="mip">Mathematical Optimization Methods</collection>
    <collection role="persons" number="achterberg">Achterberg, Tobias</collection>
    <collection role="persons" number="koch">Koch, Thorsten</collection>
    <collection role="persons" number="shinano">Shinano, Yuji</collection>
    <collection role="projects" number="MIP-ZIBOPT">MIP-ZIBOPT</collection>
    <collection role="projects" number="MODAL-SynLab">MODAL-SynLab</collection>
    <collection role="projects" number="MODAL-Gesamt">MODAL-Gesamt</collection>
    <collection role="institutes" number="aopt">Applied Optimization</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/5640/ZR-15-53.pdf</file>
    <file>https://opus4.kobv.de/opus4-zib/files/5640/ZR-15-53-rev.pdf</file>
  </doc>
</export-example>
