2 papers
astro-ph.IM2026
A Scalable Fast Multipole Method Poisson Solver for the RAMSES code: II. Adaptive Mesh Refinement and Adaptive Time Stepping
Jun-Young Lee, Romain Teyssier
We present an extended implementation of a scalable, O(N) Poisson solver based on the fast multipole method (FMM), fully compatible with adaptive mesh refinement (AMR) and adaptive…
astro-ph.IM2026
A Scalable Fast Multipole Method Poisson Solver for the RAMSES code: I. Unigrid Algorithm
Jun-Young Lee, Romain Teyssier
We present a scalable Poisson solver with complexity based on the fast multipole method (FMM) implemented in RAMSES. Our FMM constructs a hierarchy of FMM grids on top of th…