Parallel out-of-core sorting and fast accesses to disks Online publication date: Thu, 10-Nov-2005
by Christophe Cerin, Olivier Cozette, Gil Utard, Hazem Fkaier, Mohamed Jemni
International Journal of High Performance Computing and Networking (IJHPCN), Vol. 3, No. 2/3, 2005
Abstract: The paper addresses two problems. We investigate the problem of parallel external sorting in the context of a form of heterogeneous clusters then we investigate the impact of efficient disk remote accesses on the performance of external sorting. We explore three techniques to show how they can be deployed for clusters with proportional processor performances. We also validate the READ2 library, an efficient implementation of remote SCSI disk accesses. We derive a new parallel sorting algorithm that is adapted to the READ2 interface. The expected gain of using READ2 is compared to the measured gain for one external sorting implementation.
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