globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016MS000816
Scopus记录号: 2-s2.0-85013478425
论文题名:
An approach to secure weather and climate models against hardware faults
作者: Düben P; D; , Dawson A
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期:1
起始页码: 501
结束页码: 513
语种: 英语
英文关键词: Climatology ; Computer architecture ; Hardware ; Hardware security ; Meteorology ; Scalability ; Supercomputers ; Atmosphere models ; Dynamical core ; Hardware faults ; High performance computing ; Model development ; Climate models ; atmospheric modeling ; climate modeling ; computer simulation ; detection method ; error analysis ; future prospect ; hardware ; model test ; performance assessment ; shallow water ; weather
英文摘要: Enabling Earth System models to run efficiently on future supercomputers is a serious challenge for model development. Many publications study efficient parallelization to allow better scaling of performance on an increasing number of computing cores. However, one of the most alarming threats for weather and climate predictions on future high performance computing architectures is widely ignored: the presence of hardware faults that will frequently hit large applications as we approach exascale supercomputing. Changes in the structure of weather and climate models that would allow them to be resilient against hardware faults are hardly discussed in the model development community. In this paper, we present an approach to secure the dynamical core of weather and climate models against hardware faults using a backup system that stores coarse resolution copies of prognostic variables. Frequent checks of the model fields on the backup grid allow the detection of severe hardware faults, and prognostic variables that are changed by hardware faults on the model grid can be restored from the backup grid to continue model simulations with no significant delay. To justify the approach, we perform model simulations with a C-grid shallow water model in the presence of frequent hardware faults. As long as the backup system is used, simulations do not crash and a high level of model quality can be maintained. The overhead due to the backup system is reasonable and additional storage requirements are small. Runtime is increased by only 13 % for the shallow water model. © 2017. The Authors.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75815
Appears in Collections:影响、适应和脆弱性
气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: AOPP, Department of Physics, University of Oxford, Oxford, United Kingdom; European Centre for Medium Range Weather Forecasts, Reading, United Kingdom

Recommended Citation:
Düben P,D,, Dawson A. An approach to secure weather and climate models against hardware faults[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(1)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Düben P]'s Articles
[D]'s Articles
[, Dawson A]'s Articles
百度学术
Similar articles in Baidu Scholar
[Düben P]'s Articles
[D]'s Articles
[, Dawson A]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Düben P]‘s Articles
[D]‘s Articles
[, Dawson A]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.