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Conference papers
Parallel local search for solving Constraint Problems on the Cell Broadband Engine (Preliminary Results)
Abstract : We explore the use of the Cell Broadband Engine (Cell/BE for short) for combinatorial optimization applications: we present a parallel version of a constraint-based local search algorithm that has been implemented on a multiprocessor BladeCenter machine with twin Cell/BE processors (total of 16 SPUs per blade). This algorithm was chosen because it fits very well the Cell/BE architecture and requires neither shared memory nor communication between processors, while retaining a compact memory footprint. We study the performance on several large optimization benchmarks and show that this achieves mostly linear time speedups, even sometimes super-linear. This is possible because the parallel implementation might explore simultaneously different parts of the search space and therefore converge faster towards the best sub-space and thus towards a solution. Besides getting speedups, the resulting times exhibit a much smaller variance, which benefits applications where a timely reply is critical.
https://hal-paris1.archives-ouvertes.fr/hal-00663842
Contributor : Daniel Diaz <>
Submitted on : Friday, January 27, 2012 - 4:46:28 PM
Last modification on : Friday, January 8, 2021 - 5:32:04 PM
Contributor : Daniel Diaz <>
Submitted on : Friday, January 27, 2012 - 4:46:28 PM
Last modification on : Friday, January 8, 2021 - 5:32:04 PM
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