Relativistic Hydrodynamics Modeling by Means Adaptive Nested Mesh on IBM Power 9
| Autor: | Igor Kulikov, Igor Chernykh, Dmitry Karavaev, Evgeny Berendeev, Viktor Protasov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Communications in Computer and Information Science ISBN: 9783030365912 RuSCDays |
| Popis: | In this paper, the results of numerical simulations of relativistic hydrodynamics flows using the latest IBM Power 9 processors are presented. The numerical method implemented in the code is based on a combination of the Godunov method and Piecewise-Parabolic on Local Stencil method and extended for using nested adaptive mesh technologies. A relativistic hydrodynamic evolution of astronomical objects is performed on the node with IBM Power 9 on shared memory architecture. A new numerical method and parallel implementation for shared memory architectures are described in details. Studies of the code parallel implementation are presented. When using a regular mesh with an effective resolution of 512\(^3\), 60x acceleration was obtained using 196 threads of IBM Power 9. When using a nested mesh with an effective resolution of 1024\(^3\), 42x acceleration was obtained using 64 threads of IBM Power 9. When using a nested mesh with an effective resolution of 4096\(^3\), 34x acceleration was obtained using 48 threads of IBM Power 9. The results of mathematical modeling of relativistic hydrodynamics of jet galaxy formation are presented in paper. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|