Investigating In Situ Reduction via Lagrangian Representations for Cosmology and Seismology Applications
| Autor: | Chris R. Johnson, Hank Childs, Sudhanshu Sane |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Computer science 020207 software engineering 02 engineering and technology 01 natural sciences Cosmology Reduction (complexity) Range (mathematics) Encumbrance 0202 electrical engineering electronic engineering information engineering Code (cryptography) Vector field Representation (mathematics) Seismology Lagrangian analysis 0105 earth and related environmental sciences |
| Zdroj: | Computational Science – ICCS 2021 ISBN: 9783030779603 ICCS (1) |
| Popis: | Although many types of computational simulations produce time-varying vector fields, subsequent analysis is often limited to single time slices due to excessive costs. Fortunately, a new approach using a Lagrangian representation can enable time-varying vector field analysis while mitigating these costs. With this approach, a Lagrangian representation is calculated while the simulation code is running, and the result is explored after the simulation. Importantly, the effectiveness of this approach varies based on the nature of the vector field, requiring in-depth investigation for each application area. With this study, we evaluate the effectiveness for previously unexplored cosmology and seismology applications. We do this by considering encumbrance (on the simulation) and accuracy (of the reconstructed result). To inform encumbrance, we integrated in situ infrastructure with two simulation codes, and evaluated on representative HPC environments, performing Lagrangian in situ reduction using GPUs as well as CPUs. To inform accuracy, our study conducted a statistical analysis across a range of spatiotemporal configurations as well as a qualitative evaluation. In all, we demonstrate effectiveness for both cosmology and seismology—time-varying vector fields from these domains can be reduced to less than 1% of the total data via Lagrangian representations, while maintaining accurate reconstruction and requiring under 10% of total execution time in over 80% of our experiments. |
| Databáze: | OpenAIRE |
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