Hybrid parallel framework for multiple-point geostatistics on Tianhe-2: A robust solution for large-scale simulation

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Serval ID
serval:BIB_37C6DE5377A7
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Hybrid parallel framework for multiple-point geostatistics on Tianhe-2: A robust solution for large-scale simulation
Journal
Computers & Geosciences
Author(s)
Cui Zhesi, Chen Qiyu, Liu Gang, Mariethoz Gregoire, Ma Xiaogang
ISSN
0098-3004
Publication state
Published
Issued date
12/2021
Peer-reviewed
Oui
Volume
157
Pages
104923
Language
english
Abstract
Multiple-point geostatistical (MPS) simulation methods have attracted an enormous amount of attention in earth and environmental sciences due to their ability to enhance extraction and synthesis of heterogeneous patterns. To characterize the subtle features of heterogeneous structures and phenomena, large-scale and high-resolution simulations are often required. Accordingly, the size of simulation grids has increased dramatically. Since MPS is a sequential process for each grid unit along a simulation path, it results in severe computational consumption. In this work, a new hybrid parallel framework is proposed for the case of MPS simulation on large areas with enormous amount of grid cells. Both inter-node-level and intra-node-level parallel strategies are combined in this framework. To maintain the quality of the realizations, we implement a conflict control method adapting to the Monte-Carlo process. Also, an optimization method for the simulation information is embedded to reduce the inter-node communication overhead. A series of synthetic tests were used to verify the availability and performance of the proposed hybrid parallel framework. The results corroborate that the proposed framework can efficiently achieve the high-resolution reproduction and characterization of complex structures and phenomena in earth sciences.
Keywords
Multiple-point geostatistics, Hybrid parallel strategy, Parallel computing, Tianhe-2 supercomputer, Fine-grained parallel strategy
Web of science
Create date
04/10/2021 11:34
Last modification date
03/12/2022 7:48
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