Arepo swMATH ID: 39391 Software Authors: Rainer Weinberger, Volker Springel, Rüdiger Pakmor Description: The Arepo public code release. We introduce the public version of the cosmological magnetohydrodynamical moving-mesh simulation code Arepo. This version contains a finite-volume magnetohydrodynamics algorithm on an unstructured, dynamic Voronoi tessellation coupled to a tree-particle-mesh algorithm for the Poisson equation either on a Newtonian or cosmologically expanding spacetime. Time-integration is performed adopting local timestep constraints for each cell individually, solving the fluxes only across active interfaces, and calculating gravitational forces only between active particles, using an operator-splitting approach. This allows simulations with high dynamic range to be performed efficiently. Arepo is a massively distributed-memory parallel code, using the Message Passing Interface (MPI) communication standard and employing a dynamical work-load and memory balancing scheme to allow optimal use of multi-node parallel computers. The employed parallelization algorithms of Arepo are deterministic and produce binary-identical results when re-run on the same machine and with the same number of MPI ranks. A simple primordial cooling and star formation model is included as an example of sub-resolution models commonly used in simulations of galaxy formation. Arepo also contains a suite of computationally inexpensive test problems, ranging from idealized tests for automated code verification to scaled-down versions of cosmological galaxy formation simulations, and is extensively documented in order to assist adoption of the code by new scientific users. Homepage: https://arxiv.org/abs/1909.04667 Source Code: https://gitlab.mpcdf.mpg.de/vrs/arepo Related Software: GIZMO; Kokkos; FLASH; RAJA; CHARM++; AMReX; RAMSES; ENZO; MAESTROeX; CASTRO; Nyx; Python; Splash; NBODY6; VINE; SEREN; PHANTOM; GADGET; GANDALF Cited in: 0 Documents