An Experimental Study of Input/Output Characteristics of NASA Earth and Space Sciences Applications

Authors:
Michael R. Berry;Tarek A. El-Ghazawi
Affiliations:
-;-
Venue:
IPPS '96 Proceedings of the 10th International Parallel Processing Symposium
Year:
1996

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Abstract

Parallel input/output (I/O) workload characterization studies are necessary to better understand the factors that dominate performance. When translated into system design principles this knowledge can lead to higher performance/cost systems. In this paper we present the experimental results of an I/O workload characterization study of NASA Earth and Space Sciences (ESS) applications. Measurements were collected using device driver instrumentation. Baseline measurements, with no workload, and measurements during regular application runs, were collected and then analyzed and correlated. It will be shown how the observed disk I/O can be identified as block transfers, page requests, and cache activity, and how the ESS applications are characterized by a high degree of spatial and temporal locality.