QYMSYM: A GPU-Accelerated Hybrid Symplectic Integrator That Permits Close Encounters

TL;DR

This paper introduces QYMSYM, a GPU-accelerated hybrid symplectic integrator for planetary systems that efficiently handles close encounters by switching algorithms, combining high accuracy with fast computation.

Contribution

The paper presents a novel GPU-based hybrid symplectic integrator that dynamically switches algorithms during close encounters, improving efficiency and accuracy in planetary system simulations.

Findings

Comparable accuracy to existing hybrid integrators

Significant GPU acceleration achieved

Effective handling of close encounters in simulations

Abstract

We describe a parallel hybrid symplectic integrator for planetary system integration that runs on a graphics processing unit (GPU). The integrator identifies close approaches between particles and switches from symplectic to Hermite algorithms for particles that require higher resolution integrations. The integrator is approximately as accurate as other hybrid symplectic integrators but is GPU accelerated.