Early experiences with the 360TF IBM Blue Gene/L platform

AMS Citation:
Bhanot, G., and Coauthors, 2008: Early experiences with the 360TF IBM Blue Gene/L platform. International Journal of Computational Methods, 5, 237-253, doi:10.1142/S0219876208001443.
Date:2008-06-01
Resource Type:article
Title:Early experiences with the 360TF IBM Blue Gene/L platform
Abstract: The High Order Method Modeling Environment is a scalable, spectral-element-based prototype for the Community Atmospheric Model component of the Community Climate System Model. The 3D moist primitive equations are solved on the cubed sphere with a hybrid pressure Η vertical coordinate using an Emanuel convective parametrization for moist processes. Semi-implicit time integration, based on a preconditioned conjugate gradient solver, circumvents the time step restrictions associated with gravity waves. Benchmarks for two standard tests problems at 10 km horizontal resolution have been run on Blue Gene/L. Results obtained on a 32-rack Blue Gene/L system (65,536 processors, 183.5-teraflop peak) show sustained performance of 8.0 teraflops on 32,768 processors for the moist Held-Suarez test problem in coprocessor mode and 11.3 teraflops on 32,768 processors for the aquaplanet test problem, running in virtual node mode.
Subject(s):Parallel computing, Scalable algorithms, High order methods, Atmospheric modeling
Peer Review:Refereed
Copyright Information:Copyright 2012 World Scientific Publishing Co
OpenSky citable URL: ark:/85065/d7wd40rq
Publisher's Version: 10.1142/S0219876208001443
Author(s):
  • G. Bhanot
  • John Dennis - NCAR/UCAR
  • James Edwards - NCAR/UCAR
  • Wojciech Grabowski - NCAR/UCAR
  • M. Gupta
  • K. Jordan
  • Richard Loft - NCAR/UCAR
  • J. Sexton
  • Amik St-Cyr - NCAR/UCAR
  • Stephen Thomas - NCAR/UCAR
  • Henry Tufo - NCAR/UCAR
  • Theron Voran - NCAR/UCAR
  • R. Walkup
  • A. Wyszogrodski
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