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Center for Nonlinear Studies |
A high order fluids code was developed in an effort to build a richer understanding of high order numerical methods and the applicability of such schemes to science and engineering applications. The Discontinuous Galerkin Spectral Element Method (DGSEM) with Legendre-Gauss quadrature was chosen given its favorable dissipation and dispersion error properties. Additionally, the DGSEM lends itself naturally to parallelization through the presence of many tightly nested loops that comprise the algorithms for estimating differential operators in 3-D. This talk will describe the parallelization scheme using MPI+CUDA within this code's OO-Fortran framework and on currently realized strong and weak scaling. Additionally, results from ongoing validation and verification work will be presented that demonstrate the usefulness of this code as a testbed for exploring certain low Mach number, turbulent mixing phenomena.
Host: Hai Ah Nam