Title

Error-Controlled, Progressive, and Adaptable Retrieval of Scientific Data with Multilevel Decomposition

Abstract

Extreme-scale simulations and high-resolution instruments have been generating an increasing amount of data, which poses significant challenges to not only data storage during the run, but also post-processing where data will be repeatedly retrieved and analyzed for a long period of time the challenges in satisfying a wide range of post-hoc analysis needs while minimizing the I/O overhead caused by inappropriate and/or excessive data retrieval should never be left unmanaged. In this paper, we propose a data refactoring, compressing, and retrieval framework capable of 1) fine-grained data refactoring with regard to precision; 2) incrementally retrieving and recomposing the data in terms of various error bounds; and 3) adaptively retrieving data in multi-precision and multi-resolution with respect to different analysis. With the progressive data re-composition and the adaptable retrieval algorithms, our framework significantly reduces the amount of data retrieved when multiple incremental precision are requested and/or the downstream analysis time when coarse resolution is used. Experiments show that the amount of data retrieved under the same progressively requested error bound using our framework is 64% less than that using state-of-The-Art single-error-bounded approaches. Parallel experiments with up to 1, 024 cores and 600 GB data in total show that our approach yields 1.36x and 2.52x performance over existing approaches in writing to and reading from persistent storage systems, respectively.

Meeting Name

International Conference for High Performance Computing, Networking, Storage and Analysis, SC'21 (2021: Nov. 14-19, St. Louis, MO)

Department(s)

Computer Science

Comments

This research was supported by the Exascale Computing Project (17-SC-20-SC), a collaborative effort of U.S. Department of Energy Office of Science and the National Nuclear Security Administration. Specifically, this research was supported by the ADIOS2-ECP project. This material is also based upon work supported by the U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research (ASCR), Scientific Discovery through Advanced Computing (SciDAC) program, specifically the RAPIDS-2 SciDAC institute. Furthermore, the research in this project was also supported by the SIRIUS-2 ASCR research project and the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL). This research used resources of the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility.

Keywords and Phrases

Data compression; data retrieval; error control; storage and I/O

International Standard Book Number (ISBN)

978-145038442-1

International Standard Serial Number (ISSN)

2167-4337; 2167-4329

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2021 Association for Computing Machinery (ACM), All rights reserved.

Publication Date

19 Nov 2021

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