A new GPU-accelerated hydrodynamical code for numerical simulation of interacting galaxies

TL;DR

This paper introduces GPUPEGAS, a scalable GPU-accelerated hydrodynamical code designed for simulating interacting galaxies, combining advanced numerical methods with GPU optimization for improved performance.

Contribution

The paper presents GPUPEGAS, a novel GPU-accelerated hydrodynamical simulation code that integrates the Godunov and FlIC methods with FFT for efficient galaxy interaction modeling.

Findings

GPUPEGAS demonstrates high scalability on computational accelerators.

The code accurately simulates classical gas dynamics problems.

Performance tests show effective GPU utilization.

Abstract

In this paper a new scalable hydrodynamic code GPUPEGAS (GPU-accelerated PErformance Gas Astrophysic Simulation) for simulation of interacting galaxies is proposed. The code is based on combination of Godunov method as well as on the original implementation of FlIC method, specially adapted for GPU-implementation. Fast Fourier Transform is used for Poisson equation solution in GPUPEGAS. Software implementation of the above methods was tested on classical gas dynamics problems, new Aksenov's test and classical gravitational gas dynamics problems. Collisionless hydrodynamic approach was used for modelling of stars and dark matter. The scalability of GPUPEGAS computational accelerators is shown.