Extreme Scale Earthquake Simulation with Uncertainty Quantification
Extreme Scale Earthquake Simulation with Uncertainty Quantification
复制标题
具有不确定性量化的极大规模地震模拟
DOI:
10.1109/sc41404.2022.00009
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Lalith Maddegedara
中科院分区:
文献类型:
--
作者:
Ichimura Tsuyoshi;Fujita Kohei;Kusakabe Ryota;Koyama Kentaro;Murakami Sota;Kikuchi Yuma;Hori Takane;Hori Muneo;Inoue Hikaru;Nose Takafumi;Kawashima Takahiro;Lalith Maddegedara
We develop a stochastic finite element method with ultra-large degrees of freedom that discretize probabilistic and physical spaces using unstructured second-order tetrahedral elements with double precision using a mixed-precision implicit iterative solver that scales to the full Fugaku system and enables fast Uncertainty Quantification (UQ). The developed solver designed to attain high performance on a variety of CPU/GPU-based supercomputers enabled solving 37 trillion degrees-of-freedom problem with 19.8% peak FP64 performance on full Fugaku (89.8 PFLOPS) with 87.7% weak scaling efficiency, corresponding to 224-fold speedup over the state of the art solver running on full Summit. This method, which has shown its effectiveness via solving huge (32-trillion degrees-of-freedom) practical problems, is expected to be a breakthrough in damage mitigation, and is expected to facilitate the scientific understanding of earthquake phenomena and have a ripple effect on other fields that similarly require UQ.
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DOI:
--
发表时间:
2009
期刊:
Tectonophysics 472
影响因子:
--
作者:
Koketsu;K.;H.Miyake;Afnimar;Y.Tanaka
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DOI:
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期刊:
IEEE International Parallel and Distributed Processing Symposium
影响因子:
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期刊:
IEEE International Conference on Cluster Computing
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DOI:
--
发表时间:
2006
期刊:
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影响因子:
--
作者:
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影响因子:
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通讯作者:
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