Acceleration of three-dimensional Tokamak magnetohydrodynamical code with graphics processing unit and OpenACC heterogeneous parallel programming
@article{Zhang2018AccelerationOT, title={Acceleration of three-dimensional Tokamak magnetohydrodynamical code with graphics processing unit and OpenACC heterogeneous parallel programming}, author={H. W. Zhang and J. Zhu and Z. W. Ma and Guang Yuan Kan and X. Wang and W. Zhang}, journal={International Journal of Computational Fluid Dynamics}, year={2018}, volume={33}, pages={393 - 406} }
ABSTRACT In this paper, the OpenACC heterogeneous parallel programming model is successfully applied to modification and acceleration of the three-dimensional Tokamak magnetohydrodynamical code (CLT). Through combination of OpenACC and MPI technologies, CLT is further parallelised by using multiple-GPUs. Significant speedup ratios are achieved on NVIDIA TITAN Xp and TITAN V GPUs, respectively, with very few modifications of CLT. Furthermore, the validity of the double precision calculations on…
12 Citations
GPU-Accelerated Computations for Supersonic Flow Modeling on Hybrid Grids
- Computer Science2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE)
- 2020
This paper aims to design an extremely efficient double-precision GPU-accelerated parallel algorithm for supersonic flow computations on hybrid grids for computational fluid dynamics (CFD).
Accelerating an Iterative Eigensolver for Nuclear Structure Configuration Interaction Calculations on GPUs using OpenACC
- Computer ScienceJ. Comput. Sci.
- 2022
Three types of pressure crash in the low magnetic shear tokamaks
- PhysicsPhysics of Plasmas
- 2022
Numerical investigations on the pressure crash with a low magnetic shear profile in Tokamaks are carried out through the three-dimensional, toroidal, and nonlinear MHD code CLT. We find that there…
Penetration properties of resonant magnetic perturbation in EAST Tokamak
- PhysicsPhysics of Plasmas
- 2019
Our three-dimensional toroidal magnetohydrodynamics code [CLT (Ci-Liu-Ti, which means magnetohydrodynamics in Chinese)] is upgraded to CLTx in which the simulation domain extends to a scrape-off…
Influence of Hall effect and toroidal flow on the plasmoid formation and incomplete reconnection in a low resistivity plasma in tokamak
- PhysicsNuclear Fusion
- 2021
The nonlinear resistive-kink mode in the low resistivity plasma in tokamak is investigated through the three-dimensional, toroidal, and nonlinear Hall-MHD code CLT. It is found that, without the…
Role of Hall effect on the resistive kink mode in tokamaks
- PhysicsPlasma Physics and Controlled Fusion
- 2020
The influence of the Hall effect on the nonlinear evolution of the m/n = 1/1 resistive-kink mode is numerically investigated by the three-dimensional toroidal Hall-MHD code CLT. It is found that the…
Systematic simulation studies on the penetration of resonant magnetic perturbations in an Experimental Advanced Superconducting Tokamak
- Physics
- 2021
The penetration properties of the n = 1 resonant magnetic perturbations (RMPs) with toroidal rotation are systematically studied by the upgraded three-dimensional toroidal magnetohydrodynamic code…
Sawtooth relaxation oscillations, nonlinear helical flows and steady-state m/n=1 magnetic islands in low-viscosity tokamak plasma simulations
- PhysicsNuclear Fusion
- 2020
A numerical study on the influence of plasma viscosity and of the plasma β (=kinetic pressure/magnetic pressure) parameter on the nonlinear evolution of resistive internal kink modes in tokamak…
Influence of aspect ratio, plasma viscosity, and radial position of the resonant surfaces on the plasmoid formation in the low resistivity plasma in Tokamak
- Physics, GeologyNuclear Fusion
- 2021
In the present paper, we systematically investigate the nonlinear evolution of the resistive kink mode in the low resistivity plasma in Tokamak geometry. We find that the aspect ratio of the initial…
The off-axis pressure crash associated with the nonlinear evolution of the m/n = 2/1 double tearing mode
- Physics
- 2020
The nonlinear evolution of the m/n = 2/1 double tearing mode (DTM) is investigated by the toroidal resistive magnetohydrodynamic code CLT. It is found that the m/n = 2/1 DTM can lead to either a core…
References
SHOWING 1-10 OF 49 REFERENCES
Three Dimensional Pseudo-Spectral Compressible Magnetohydrodynamic GPU Code for Astrophysical Plasma Simulation
- Computer Science2018 IEEE 25th International Conference on High Performance Computing Workshops (HiPCW)
- 2018
The experimental results indicate that the GPU accelerated code is able to achieve upto two orders of magnitude speedup over a corresponding OpenMP parallel, FFTW library based code, on a NVIDIA Tesla P100 GPU.
An MPI/OpenACC implementation of a high-order electromagnetics solver with GPUDirect communication
- Computer ScienceInt. J. High Perform. Comput. Appl.
- 2016
Performance results and an analysis of a message passing interface/OpenACC implementation of an electromagnetic solver based on a spectral-element discontinuous Galerkin discretization of the time-dependent Maxwell equations show more than 2.5× speedup over central processing unit-only performance on the same number of nodes.
Acceleration of a Particle-in-Cell Code for Space Plasma Simulations with OpenACC
- Computer Science
- 2015
A case study of using OpenACC to offload the computation intensive parts: particle mover and interpolation of particles to grids, in a massively parallel Particle-in-Cell simulation code, iPIC3D, to multi-GPU systems.
GPU Acceleration of an Established Solar MHD Code using OpenACC
- Computer Science, PhysicsJournal of Physics: Conference Series
- 2019
It is found that the GPU-accelerated MAS code has the ability to run “zero-beta” simulations on a single multi-GPU server at speeds previously requiring multiple CPU server-nodes of a supercomputer.
Accelerating lattice QCD simulations with 2 flavors of staggered fermions on multiple GPUs using OpenACC - A first attempt
- PhysicsComput. Phys. Commun.
- 2018
Nova: a nonvariational code for solving the MHD stability of axisymmetric toroidal plasmas
- Physics
- 1987
Accelerating a C++ CFD Code with OpenACC
- Computer Science2014 First Workshop on Accelerator Programming using Directives
- 2014
It is shown how the texture cache on NVIDIA GPUs can be used to minimize the performance impact of suboptimal memory access patterns on accelerators without writing platform specific code.
OpenACC acceleration of the Nek5000 spectral element code
- Computer ScienceInt. J. High Perform. Comput. Appl.
- 2015
A case study of porting NekBone, a skeleton version of the Nek5000 code, to a parallel GPU-accelerated system, and profiling of NekBone provided an assessment of the suitability of the code for GPU systems, and indicated possible kernel optimizations.
Hall effect on tearing mode instabilities in tokamak
- Physics
- 2017
The tearing mode instability is one of the most important dynamic processes in space and laboratory plasmas. Hall effects, resulting from the decoupling of electron and ion motions, can cause fast…