Solving Open MIP Instances with ParaSCIP on Supercomputers using up to 80,000 Cores

Please always quote using this URN: urn:nbn:de:0297-zib-56404
  • This paper describes how we solved 12 previously unsolved mixed-integer program- ming (MIP) instances from the MIPLIB benchmark sets. To achieve these results we used an enhanced version of ParaSCIP, setting a new record for the largest scale MIP computation: up to 80,000 cores in parallel on the Titan supercomputer. In this paper we describe the basic parallelization mechanism of ParaSCIP, improvements of the dynamic load balancing and novel techniques to exploit the power of parallelization for MIP solving. We give a detailed overview of computing times and statistics for solving open MIPLIB instances.

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Author:Yuji Shinano, Tobias Achterberg, Timo Berthold, Stefan Heinz, Thorsten Koch, Michael Winkler
Document Type:ZIB-Report
Tag:MIPLIB; Mixed Integer Programming; Node merging; Parallel processing; Racing ParaSCIP; Ubiquity Generator Framework
MSC-Classification:68-XX COMPUTER SCIENCE (For papers involving machine computations and programs in a specific mathematical area, see Section -04 in that area)
CCS-Classification:D. Software
I. Computing Methodologies
Date of first Publication:2015/10/27
Series (Serial Number):ZIB-Report (15-53)
Published in:Appeared in: Proc. of 30th IEEE International Parallel & Distributed Processing Symposium

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