Scalability of Global 0.25° Ocean Simulations Using MOM

Abstract : We investigate the scalability of global 0.25° resolution ocean-sea ice simulations using the Modular Ocean Model (MOM). We focus on two major platforms, hosted at the National Computational Infrastructure (NCI) National Facility: an x86-based PRIMERGY cluster with InfiniBand interconnects, and a SPARC-based FX10 system using the Tofu interconnect. We show that such models produce efficient, scalable results on both platforms up to 960 CPUs. Speeds are notably faster on Raijin when either hyperthreading or fewer cores per node are used. We also show that the ocean submodel scales up to 1920 CPUs with negligible loss of efficiency, but the sea ice and coupler components quickly become inefficient and represent substantial bottlenecks in future scalability. Our results show that both platforms offer sufficient performance for future scientific research, and highlight to the challenges for future scalability and optimization.
Document type :
Conference papers
Complete list of metadatas

Cited literature [5 references]  Display  Hide  Download

https://hal.inria.fr/hal-01328605
Contributor : Hal Ifip <>
Submitted on : Wednesday, June 8, 2016 - 11:22:09 AM
Last modification on : Wednesday, June 8, 2016 - 11:34:29 AM

File

978-3-319-15994-2_55_Chapter.p...
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Marshall Ward, Yuanyuan Zhang. Scalability of Global 0.25° Ocean Simulations Using MOM. 11th International Symposium on Environmental Software Systems (ISESS), Mar 2015, Melbourne, Australia. pp.542-551, ⟨10.1007/978-3-319-15994-2_55⟩. ⟨hal-01328605⟩

Share

Metrics

Record views

62

Files downloads

80