[02267] A Massively Parallel Performance Portable Free Space Spectral Poisson Solver for Beam and Plasma Physics Problems
Session Time & Room : 4D (Aug.24, 15:30-17:10) @E504
Type : Contributed Talk
Abstract : Recently, a new fast algorithm for computing volume potentials has been proposed by Vico, Greengard, and Ferrando, which provides a spectral accuracy free-space Poisson equation solver, useful for plasma and beam physics. We write a parallel performance portable implementation in the IPPL library, using the Exascale Computing Project's heFFTe and Kokkos libraries, and MPI for parallelization. A comparison with the traditional Hockney-Eastwood algorithm manifests the memory benefits of using the new algorithm, especially on GPUs.
