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[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.
  • Classification : 65Y05, 78A30, 35Q61, 65K05, 65N80
  • Format : Talk at Waseda University
  • Author(s) :
    • Sonali Mayani (Paul Scherrer Institute)
    • Antoine Cerfon (NYU)
    • Matthias Frey (University of St. Andrews)
    • Veronica Montanaro (Paul Scherrer Institute)
    • Sriramkrishnan Muralikrishnan (Jülich Supercomputing Centre)
    • Andreas Adelmann (Paul Scherrer Institute)