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Portland, Oregon, USA
Nov. 13, 1999 to Nov. 18, 1999
ISBN: 1-58113-091-0
pp: 12
ABSTRACT
Applications that make use of very large scientific datasets have become an increasingly important subset of scientific applications. In these applications, datasets are often multi-dimensional, i.e., data items are associated with points in a multi-dimensional attribute space, and access to data items is described by range queries. The basic processing involves mapping input data items to output data items, and some form of aggregation of all the input data items that project to the each output data item. We have developed an infrastructure, called the Active Data Repository (ADR), that integrates storage, retrieval and processing of multi-dimensional datasets on distributed-memory parallel architectures with multiple disks attached to each node. In this paper we address efficient execution of range queries on distributed memory parallel machines within ADR framework. We present three potential strategies, and evaluate them under different application scenarios and machine configurations. We present experimental results on the scalability and performance of the strategies on a 128-node IBM SP.
INDEX TERMS
Information retrieval, Biomedical imaging, Application software, Chemical sensors, Sensor phenomena and characterization, Satellites, Computer science, Educational institutions, Pathology, Parallel architectures
CITATION
"Querying Very Large Multi-dimensional Datasets in ADR", SC, 1999, SC Conference, SC Conference 1999, pp. 12, doi:10.1109/SC.1999.10046
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