Spatial prefetching for out-of-core visualization of multidimensional data

Dan R. Lipsa; Philip J. Rhodes; R. Daniel Bergeron; Ted M. Sparr

doi:10.1117/12.704751

29 January 2007 Spatial prefetching for out-of-core visualization of multidimensional data

Dan R. Lipsa, Philip J. Rhodes, R. Daniel Bergeron, Ted M. Sparr

Proceedings Volume 6495, Visualization and Data Analysis 2007; 64950G (2007) https://doi.org/10.1117/12.704751
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

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.

Citation Download Citation

Dan R. Lipsa, Philip J. Rhodes, R. Daniel Bergeron, and Ted M. Sparr "Spatial prefetching for out-of-core visualization of multidimensional data", Proc. SPIE 6495, Visualization and Data Analysis 2007, 64950G (29 January 2007); https://doi.org/10.1117/12.704751

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