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Partnership for Advanced Computing in Europe Enabling χ navis CFD Solver for Massively Parallel Simulations
| Content Provider | Semantic Scholar |
|---|---|
| Author | Broglia, Riccardo Zaghi, Stefano Muscari, Roberto Salvadore, Francesco Ko, Soon-Heum |
| Copyright Year | 2013 |
| Abstract | In this paper, the work that has been performed to extend the capabilities of the χnavis software, a well tested and validated parallel flow solver developed by the research group of CNR-INSEAN, is reported. The solver is based on the finite volume discretization of the unsteady incompressible Navier-Stokes equations; main features include a level set approach to handle free surface flows and a dynamical overlapping grids approach, which allows to deal with bodies in relative motion. The baseline code features a hybrid MPI/OpenMP parallelization, proven to scale when running on order of hundreds of cores (i.e. Tier-1 platforms). However, some issues arise when trying to use this code with the current massively parallel HPC facilities provided in the Tier-0 PRACE context. First of all, it is mandatory to assess an efficient speed-up up to thousands of processors. Other important aspects are related to the preand postprocessing phases which need to be optimized and, possibly, parallelized. The last one concerns the implementation of MPI-I/O procedures in order to try to accelerate data access and to reduce the number of generated files. Project ID: 2010PA1461 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.prace-ri.eu/IMG/pdf/wp121.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
