Abstract
The ILOG CPLEX Mixed Integer Optimizer is a state-of-the-art solver for mixed integer programming. In this paper, we introduce ParaLEX which realizes a master-worker parallelization specialized for the solver on a PC cluster using MPI. To fully utilize the power of the solver, the implementation exploits almost all functionality available in it. Computational experiments are performed for MIPLIB instances on a PC cluster composed of fifteen 3.4GHz pentiumD 950 (with 2G bytes RAM) PCs (running a maximum of 30 CPLEX Mixed Integer Optimizers). The results show that ParaLEX is highly effective in accelerating the solver for hard problem instances.
This work was partially supported by MEXT in Japan through Grants-in-Aid(18510118).
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Shinano, Y., Fujie, T. (2007). ParaLEX: A Parallel Extension for the CPLEX Mixed Integer Optimizer. In: Cappello, F., Herault, T., Dongarra, J. (eds) Recent Advances in Parallel Virtual Machine and Message Passing Interface. EuroPVM/MPI 2007. Lecture Notes in Computer Science, vol 4757. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75416-9_19
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DOI: https://doi.org/10.1007/978-3-540-75416-9_19
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-75415-2
Online ISBN: 978-3-540-75416-9
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