Computational performance of ultra-high-resolution capability in the Community Earth System Model
With the fourth release of the Community Climate System Model, the ability to perform ultra-high-resolution climate simulations is now possible, enabling eddy-resolving ocean and sea-ice models to be coupled to a finite-volume atmosphere model for a range of atmospheric resolutions. This capability...
Published in: | The International Journal of High Performance Computing Applications |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
2012
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Subjects: | |
Online Access: | http://dx.doi.org/10.1177/1094342012436965 http://journals.sagepub.com/doi/pdf/10.1177/1094342012436965 http://journals.sagepub.com/doi/full-xml/10.1177/1094342012436965 |
Summary: | With the fourth release of the Community Climate System Model, the ability to perform ultra-high-resolution climate simulations is now possible, enabling eddy-resolving ocean and sea-ice models to be coupled to a finite-volume atmosphere model for a range of atmospheric resolutions. This capability was made possible by enabling the model to use large scale parallelism, which required a significant refactoring of the software infrastructure. We describe the scalability of two ultra-high-resolution coupled configurations on leadership class computing platforms. We demonstrate the ability to utilize over 30,000 processor cores on a Cray XT5 system and over 60,000 cores on an IBM Blue Gene/P system to obtain climatologically relevant simulation rates for these configurations. |
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