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A global climate model agent for high spatial and temporal resolution data

delete2014-01-17
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PRE
AI
L
L. Wood *
J
Jeff Daily
M
Michael Henry
B
Bruce Palmer
K
Karen Schuchardt
D
D. A. Dazlich
R
Ross Heikes
D
David A. Randall
DOI:10.1177/1094342013518808delete
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摘要

摘要

En 中文
Fine cell granularity in modern climate models can produce terabytes of data in each snapshot, causing significant I/O overhead. To address this issue, a method of reducing the I/O latency of high-resolution climate models by identifying and selectively outputting regions of interest is presented. Working with a global cloud-resolving model and running with up to 10,240 processors on a Cray XE6, this method provides significant I/O bandwidth reduction depending on the frequency of writes and the size of the region of interest. The implementation challenges of determining global parameters in a strictly core-localized model and properly formatting output files that only contain subsections of the global grid are addressed, as well as the overall bandwidth impact and benefits of the method. The gains in I/O throughput provided by this method allow dual output rates for high-resolution climate models: a low-frequency global snapshot as well as a high-frequency regional snapshot when events of particular interest occur.
Keyword:
Global cloud-resolving model
software agent
Hoshen-Kopelman algorithm
parallel clustering
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期刊

International Journal of High Performance Computing Applications 封面图
International Journal of High Performance Computing Applications
IF:
2.5
论文数:
1.1K
被引数:
1.3K

机构

P
Pacific Northwest National Laboratory
学者数:
9.0K
论文数: 6.3K
被引数: 14
U
united states department of energy (doe)
学者数:
11.3W
论文数: 9.6W
被引数: 246
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