David Kotz. Disk-directed I/O for an Out-of-core Computation. In Proceedings of the Fourth IEEE International Symposium on High Performance Distributed Computing (HPDC), pages 159-166, August 1995. IEEE Computer Society Press. DOI 10.1109/HPDC.1995.518706.

Abstract: New file systems are critical to obtain good I/O performance on large multiprocessors. Several researchers have suggested the use of collective file-system operations, in which all processes in an application cooperate in each I/O request. Others have suggested that the traditional low-level interface (\tt read, write, seek) be augmented with various higher-level requests (e.g., read matrix). Collective, high-level requests permit a technique called disk-directed I/O to significantly improve performance over traditional file systems and interfaces, at least on simple I/O benchmarks. In this paper, we present the results of experiments with an ``out-of-core'' LU-decomposition program. Although its collective interface was awkward in some places, and forced additional synchronization, disk-directed I/O was able to obtain much better overall performance than the traditional system.

Keywords: parallel-IO, parallel computing, file system


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Copyright © 1995 by IEEE.

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See also earlier version kotz:lu-tr.