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Proceedings Paper

Spatial prefetching for out-of-core visualization of multidimensional data
Author(s): Dan R. Lipsa; Philip J. Rhodes; R. Daniel Bergeron; Ted M. Sparr
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Paper Abstract

In this paper we propose a technique called storage-aware spatial prefetching that can provide significant performance improvements for out-of-core visualization. This approach is motivated by file chunking in which a multidimensional data file is reorganized into multidimensional sub-blocks that are stored linearly in the file. This increases the likelihood that data close in the n-dimensional volume represented by the file will be closer together in the physical file. Chunking has been demonstrated to improve the typical access to such data, but it requires a complete re-organization of the file and sometimes efficient access is only achieved if multiple different chunking organizations are maintained simultaneously. Our approach can be thought of as on-the-fly chunking, but it does not require physical re-organization of the data or multiple copies with different formats. We also describe an implementation of our technique and provide some performance results that are very promising.

Paper Details

Date Published: 29 January 2007
PDF: 8 pages
Proc. SPIE 6495, Visualization and Data Analysis 2007, 64950G (29 January 2007); doi: 10.1117/12.704751
Show Author Affiliations
Dan R. Lipsa, Armstrong Atlantic State Univ. (United States)
Philip J. Rhodes, Univ. of Mississippi (United States)
R. Daniel Bergeron, Univ. of New Hampshire (United States)
Ted M. Sparr, Univ. of New Hampshire (United States)

Published in SPIE Proceedings Vol. 6495:
Visualization and Data Analysis 2007
Robert F. Erbacher; Jonathan C. Roberts; Matti T. Gröhn; Katy Börner, Editor(s)

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