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项目作者： hightower8083

项目描述 ：
exercise of porting to openCL
高级语言： Python
项目地址: git://github.com/hightower8083/chimeraCL.git
创建时间： 2017-09-08T11:46:37Z
项目社区：https://github.com/hightower8083/chimeraCL
开源协议：GNU General Public License v3.0
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CHIMERA(.CL)

Project of a PSATD PIC code on heterogeneous architectures

CRAN

by Igor A Andriyash (igor.andriyash@gmail.com)

CHIMERA(.CL) is a project of a relativistic electromagnetic particle-in-cell code, based on a quasi-cylindric pseudo-spectral analytical time domain (PSATD) Maxwell solver. More details on this method can be found in the original publications [1,2,3].

The project spins off from the original code CHIMERA and is aimed to be firstly a playground to learn (py)openCL approach to GPGPU programming.
The second goal of CHIMERA(.CL) is to design the code with maximum flexibility:

  • code should be divided into (i) wrapper classes that are independent of computational part (e.g. particles.py and grid.py), and (ii) compiled methods (cf ./methods/) as much general as possible.
  • computational data should be presented with ‘device’ abstraction
  • all data structures should be grouped into containers of dictionary type with comprehensive naming

Presenly developed methods are using openCL via PyOpenCL API which also benefits from a few methods provided by Reikna.

Code also includes the tvtk-based script to convert the output gerenated by the code into the VTK containers (see example below).

Examples of the simulation scripts and Paraview state-file for visualising the VTK files can be found in ./examples/ folder.

System requirements

  • Linux or MacOS (not tested on Windows)
  • python distribution with numpy and scipy (matplotlib is also helpful)
  • openCL driver (tested with version 1.2 )
  • PyOpenCL
  • Reikna library
  • pyFFTW (Reikna’s FFT crashes on Apple CPUs, cause Apple are geniuses, so it’s replaced for them)
  • path to the code should be known to python (e.g. exported to PYTHONPATH)

[1] Igor A. Andriyash, Remi Lehe and Agustin Lifschitz, Laser-plasma interactions with a Fourier-Bessel particle-in-cell method, Physics of Plasmas 23, 033110
(2016)

[2] Remi Lehe, Manuel Kirchen, Igor A. Andriyash, Brendan B. Godfrey and Jean-Luc Vay, A spectral, quasi-cylindrical and dispersion-free Particle-In-Cell algorithm,
Computer Physics Communications 203, 66 (2016)

[3] Igor A. Andriyash, Remi Lehe and Victor Malka, A spectral unaveraged algorithm for free electron laser simulations, Journal of Computational Physics 282, 397 (2015)