Lawrence Berkeley National Laboratory
Exploiting Thread Parallelism for Ocean Modeling on Cray XC Supercomputers
- Author(s): Sarje, A
- Jacobsen, D
- Williams, S
- Ringler, T
- Oliker, L
- et al.
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.