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Exploiting Thread Parallelism for Ocean Modeling on Cray XC Supercomputers

  • Author(s): Sarje, A;
  • Jacobsen, D;
  • Williams, S;
  • Ringler, T;
  • Oliker, L
  • et al.
Abstract

The incorporation of increasing core counts in modern processors used to build state-of-the-art supercomputers is driving application development towards exploitation of thread parallelism, in addition to distributed memory parallelism, with the goal of delivering efficient high-performance codes. In this work we describe the exploitation of threading and our experiences with it with respect to a real-world ocean modeling application code, MPAS-Ocean. We present detailed performance analysis and comparisons of various approaches and configurations for threading on the Cray XC series supercomputers.

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