Porting and Evolution of THETIS on the Curie Supercomputer

It has already been shown that the numerical tool Thétis based on the resolution of the Navier-Stokes
equation for multiphase flows gives accurate results for coastal applications, e.g. wave breaking, tidal
bore propagation, tsunamis generation, swash flows, etc. [1,2,3,4,5,6]. In this study our goal is to
improve the time and memory consumption in the set-up phase of the simulation (partitioning and
building the computational mesh), examining the eventual benefits of an hybrid approach of the Hypre
library, and doing fine tuning in implementation of the code on Curie Tier-0. We also implement
parallel POSIX VTK and HDF5 I/O. Thétis is now able to run efficiently up to 1 billion mesh nodes at
16384 cores on CURIE in a production context.