Accession Number : ADA547036


Title :   Scalability of Semi-Implicit Time Integrators for Nonhydrostatic Galerkin-based Atmospheric Models on Large Scale Cluster


Descriptive Note : Conference paper


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF APPLIED MATHEMATICS


Personal Author(s) : Kelly, James F ; Giraldo, Francis X ; Jost, Gabriele


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a547036.pdf


Report Date : Jan 2011


Pagination or Media Count : 5


Abstract : In this paper we describe the current status of our ongoing effort to optimize the efficiency of a novel application package for Nonhydrostatic Unified Model of the Atmosphere (NUMA) when running on large cluster architectures. The linear solver within a distributed memory paradigm is critical for overall model efficiency. The goal of this work-in-progress is to investigate the scalability of the model for different solvers and determine a set of optimal solvers to be used for different situations. We will describe our novel approach and demonstrate its scalability on a variety of clusters of multicore node clusters. We also present performance statistics to explain the scalability behavior.


Descriptors :   *ATMOSPHERE MODELS , *GALERKIN METHOD , *HYDROSTATICS , EFFICIENCY , CLUSTERING , ARCHITECTURE , STATISTICS , DISTRIBUTION , MODELS , MEMORY DEVICES


Subject Categories : Atmospheric Physics
      Numerical Mathematics


Distribution Statement : APPROVED FOR PUBLIC RELEASE