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Reducing Thread Divergence in GPU-based B&B Applied to the Flow-shop problem

Abstract : In this paper,we propose a pioneering work on designing and programming B&B algorithms on GPU. To the best of our knowledge, no contribution has been proposed to raise such challenge. We focus on the parallel evaluation of the bounds for the Flow-shop scheduling problem. To deal with thread divergence caused by the bounding operation, we investigate two software based approaches called thread data reordering and branch refactoring. Experiments reported that parallel evaluation of bounds speeds up execution up to 54.5 times compared to a CPU version.
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Submitted on : Monday, November 14, 2011 - 12:05:07 PM
Last modification on : Thursday, January 20, 2022 - 5:27:53 PM
Long-term archiving on: : Wednesday, February 15, 2012 - 2:22:38 AM


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  • HAL Id : hal-00640805, version 1


Imen Chakroun, Ahcène Bendjoudi, Nouredine Melab. Reducing Thread Divergence in GPU-based B&B Applied to the Flow-shop problem. 9th INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING AND APPLIED MATHEMATICS (PPAM 2011), Sep 2011, Torun, Poland. ⟨hal-00640805⟩



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