SC20 Proceedings

The International Conference for High Performance Computing, Networking, Storage, and Analysis

An Implicitly Parallel Meshfree Solver in Regent


Workshop:PAW-ATM 2020: The 3rd Annual Parallel Applications Workshop, Alternatives To MPI+X

Authors: Rupanshu Soi and Nischay Mamidi (Birla Institute of Technology and Science Pilani - Hyderabad Campus); Elliott Slaughter (SLAC National Accelerator Laboratory); Kumar Prasun and Anil Nemili (Birla Institute of Technology and Science Pilani - Hyderabad Campus); and Suresh Deshpande (JNCASR, Bengaluru)


Abstract: This paper presents the development of a Regent-based implicitly parallel meshfree solver for inviscid compressible fluid flows. The meshfree solver is based on the Least Squares Kinetic Upwind Method (LSKUM). The performance of the Regent parallel solver is assessed by comparing with the explicitly parallel versions of the same solver written in Fortran 90 and Julia. The Fortran code uses MPI with PETSc libraries, while the Julia code uses an MPI+X alternative parallel library. Numerical results are shown to assess the performance of these solvers on single and multiple CPU nodes.


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