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A distributed computing approach to improve the performance of the Parallel Ocean Program (v2.1)

B. van Werkhoven, J. Maassen, M. Kliphuis, H. A. Dijkstra, S. E. Brunnabend, M. van Meersbergen, F. J. Seinstra, H. E. Bal
VU University Amsterdam, Amsterdam, the Netherlands
Geoscientific Model Development Discussions, 6, 4705-4744, 2013

@article{van2013distributed,

   title={A distributed computing approach to improve the performance of the Parallel Ocean Program (v2. 1)},

   author={van Werkhoven, B and Maassen, J and Kliphuis, M and Dijkstra, HA and Brunnabend, SE and van Meersbergen, M and Seinstra, FJ and Bal, HE},

   year={2013}

}

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The Parallel Ocean Program (POP) is used in many strongly eddying ocean circulation simulations. Ideally one would like to do thousand-year long simulations, but the current performance of POP prohibits this type of simulations. In this work, using a new distributed computing approach, two innovations to improve the performance of POP are presented. The first is a new block partitioning scheme for the optimization of the load balancing of POP such that it can be run efficiently in a multi-platform setting. The second is an implementation of part of the POP model code on Graphics Processing Units. We show that the combination of both innovations leads to a substantial performance increase also when running POP simultaneously over multiple computational platforms.
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