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Multilevel Techniques for Compression and Reduction of Scientific Data-Quantitative Control of Accuracy in Derived Quantities

Journal Article · · SIAM Journal on Scientific Computing
DOI:https://doi.org/10.1137/18M1208885· OSTI ID:1570895
 [1];  [1];  [1];  [2]
  1. Brown Univ., Providence, RI (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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Although many compression algorithms are focused on preserving pointwise values of the data, application scientists are generally more concerned with derived quantities. Equally well, the user may even be willing to accept a high level of lossiness in the compression provided that the compressed data respect certain invariants, such as mass conservation. In the current work, we develop a mathematical framework and techniques that enable data to be adaptively compressed while maintaining a specified tolerance on a class of user-prescribed quantities. Here, the algorithm is used to augment the functionality of the data reduction package MGARD developed in previous work and the functionality is illustrated by a range of application including data from computational simulation of autocatalytic reaction simulation, turbulent combustion simulation, experimental data obtained from magnetic confinement fusion experiment, and simulation of turbulent flow along a rectangular channel. In each case, we consider one or more relevant quantities of interest and reduce the data so as to preserve these quantities.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1570895
Journal Information:
SIAM Journal on Scientific Computing, Vol. 41, Issue 4; ISSN 1064-8275
Publisher:
SIAMCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

Figures / Tables (17)

Algorithm 1(p. 4)figure Algorithm 1
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Algorithm 2(p. 8)figure Algorithm 2
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Table 1(p. 11)table Table 1
Table 2(p. 12)table Table 2
Fig. 4(p. 13)figure Fig. 4
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Fig. 11(p. 19)figure Fig. 11
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97 MATHEMATICS AND COMPUTING
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