SUQ$2$: Uncertainty Quantification Queries over Large Spatio-temporal Simulations - Archive ouverte HAL Access content directly
Journal Articles Bulletin of the Technical Committee on Data Engineering Year : 2020

SUQ$2$: Uncertainty Quantification Queries over Large Spatio-temporal Simulations

(1) , (1) , (1) , (1) , (2) , (3) , (3)
1
2
3

Abstract

The combination of high-performance computing towards Exascale power and numerical techniques enables exploring complex physical phenomena using large-scale spatio-temporal modeling and simulation. The improvements on the fidelity of phenomena simulation require more sophisticated uncertainty quantification analysis, leaving behind measurements restricted to low order statistical moments and moving towards more expressive probability density functions models of uncertainty. In this paper, we consider the problem of answering uncertainty quantification queries over large spatio-temporal simulation results. We propose the SU Q 2 method based on the Generalized Lambda Distribution (GLD) function. GLD fitting is an embarrassingly parallel process that scales linearly to the number of available cores on the number of simulation points. Furthermore, the answer of queries is entirely based on computed GLDs and the corresponding clusters, which enables trading the huge amount of simulation output data by 4 values in the GLD parametrization per simulation point. The methodology presented in this paper becomes an important ingredient in converging simulations improvements to the Exascale computational power.
Fichier principal
Vignette du fichier
Lemus-2020.pdf (678.54 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

lirmm-02531748 , version 1 (03-04-2020)

Identifiers

  • HAL Id : lirmm-02531748 , version 1

Cite

Noel Lemus, Fábio Porto, Yania M Souto, Rafael Pereira, Ji Liu, et al.. SUQ$2$: Uncertainty Quantification Queries over Large Spatio-temporal Simulations. Bulletin of the Technical Committee on Data Engineering, 2020, 43 (1), pp.47-59. ⟨lirmm-02531748⟩
120 View
108 Download

Share

Gmail Facebook Twitter LinkedIn More