Numerical Hydrodynamics Simulation of Astrophysical Flows at Intel Xeon Phi Supercomputers

Abstract

In this paper we propose a research of AstroPhi code for numerical simulation of astrophysical flows at
Intel Xeon Phi supercomputers. The co-design of a computational astrophysics model are described. The parallel implementation and scalability tests of the AstroPhi code are presented. The results of simulation of interaction between intergalactic wind and a disk galaxy are provided. For AstroPhi code a 134x speed-up with one Intel Xeon Phi accelerator and 75% weak scaling efficiency on 224x Intel Xeon Phi accelerators was obtained. We got peak of performance on a 7168 X 1024 X 1024 mesh size by means 53760 RSC PetaStream threads.