Reguly, IZ; Giles, D; Gopinathan, D; Quivy, L; Beck, JH; Giles, MB; Guillas, S; Reguly, IZ; Giles, D; Gopinathan, D; Quivy, L; Beck, JH; Giles, MB; Guillas, S; Dias, F; - view fewer (2018) The VOLNA-OP2 tsunami code (version 1.5). Geoscientific Model Development , 11 (11) pp. 4621-4635. 10.5194/gmd-11-4621-2018.

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Abstract

In this paper, we present the VOLNA-OP2 tsunami model and implementation; a finite-volume nonlinear shallow-water equation (NSWE) solver built on the OP2 domain-specific language (DSL) for unstructured mesh computations. VOLNA-OP2 is unique among tsunami solvers in its support for several high-performance computing platforms: central processing units (CPUs), the Intel Xeon Phi, and graphics processing units (GPUs). This is achieved in a way that the scientific code is kept separate from various parallel implementations, enabling easy maintainability. It has already been used in production for several years; here we discuss how it can be integrated into various workflows, such as a statistical emulator. The scalability of the code is demonstrated on three supercomputers, built with classical Xeon CPUs, the Intel Xeon Phi, and NVIDIA P100 GPUs. VOLNA-OP2 shows an ability to deliver productivity as well as performance and portability to its users across a number of platforms.

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