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Title: Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model

Abstract

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.

Authors:
 [1];  [1];  [2];  [3];  [1];  [4];  [4]
  1. National Center for Atmospheric Research (NCAR)
  2. ORNL
  3. Lawrence Livermore National Laboratory (LLNL)
  4. Argonne National Laboratory (ANL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Center for Computational Sciences
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1040733
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
International Journal of High Performance Computing Applications
Additional Journal Information:
Journal Volume: 26; Journal Issue: 1; Journal ID: ISSN 1094-3420
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; CLIMATES; PERFORMANCE; RESOLUTION; SEAS; SIMULATION

Citation Formats

Dennis, John, Vertenstein, Mariana, Worley, Patrick H, Mirin, Arthur A., Craig, Anthony, Jacob, Robert L., and Mickelson, Sheri A. Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model. United States: N. p., 2012. Web. doi:10.1177/1094342012436965.
Dennis, John, Vertenstein, Mariana, Worley, Patrick H, Mirin, Arthur A., Craig, Anthony, Jacob, Robert L., & Mickelson, Sheri A. Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model. United States. doi:10.1177/1094342012436965.
Dennis, John, Vertenstein, Mariana, Worley, Patrick H, Mirin, Arthur A., Craig, Anthony, Jacob, Robert L., and Mickelson, Sheri A. Sun . "Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model". United States. doi:10.1177/1094342012436965.
@article{osti_1040733,
title = {Computational Performance of Ultra-High-Resolution Capability in the Community Earth System Model},
author = {Dennis, John and Vertenstein, Mariana and Worley, Patrick H and Mirin, Arthur A. and Craig, Anthony and Jacob, Robert L. and Mickelson, Sheri A.},
abstractNote = {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.},
doi = {10.1177/1094342012436965},
journal = {International Journal of High Performance Computing Applications},
issn = {1094-3420},
number = 1,
volume = 26,
place = {United States},
year = {2012},
month = {1}
}

Works referenced in this record:

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