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A global plasma turbulence simulation code, ORB5, is presented. It solves the gyrokinetic electrostatic equations including zonal flows in axisymmetric magnetic geometry. The present version of the code assumes a Boltzmann electron response on magnetic surfaces. It uses a Particle-In-Cell (PIC), δf scheme, 3D cubic B-splines finite elements for the field… (More)

- Kevin Cristiano, Pierre Kuonen, Ralf Gruber, Vincent Keller, Michela Spada, Trach-Minh Tran +6 others
- 2006

The authors present the integration of the Intelligent (Grid) Scheduling System into the VIOLA meta-scheduling environment which itself is based on the UNICORE Grid software. The goal of the new, integrated environment is to enable the submission of jobs to the Grid system best-suited for the application workflow. For this purpose a cost function is used… (More)

- Ralf Gruber, Vincent Keller, Pierre Kuonen, Marie-Christine Sawley, Basile Schaeli, Ali Tolou +2 others
- PPAM
- 2005

The main objective of the Intelligent GRID Scheduling System (ISS) project is to provide a middleware infrastructure allowing a good positioning and scheduling of real life applications in a computational GRID. According to data collected on the machines in the GRID, on the behaviour of the applications, and on the performance requirements demanded by the… (More)

- F. D. Halpern, P. Ricci, S. Jolliet, J. Loizu, J. Morales, A. Mosetto +4 others
- J. Comput. Physics
- 2016

a r t i c l e i n f o a b s t r a c t We describe a new version of GBS, a 3D global, flux-driven plasma turbulence code to simulate the turbulent dynamics in the tokamak scrape-off layer (SOL), superseding the code presented by Ricci et al. (2012) [14]. The present work is driven by the objective of studying SOL turbulent dynamics in medium size tokamaks… (More)

- S. Jolliet, B. F. McMillan, Laurent Villard, T. Vernay, P. Angelino, Trach-Minh Tran +3 others
- J. Comput. Physics
- 2012

In this work, a Fourier solver [McMillan et. in order to reduce the memory of the matrix associated with the field equation. This scheme is verified with linear and nonlinear simulations of turbulence. It is demonstrated that the straight-field-line angle is the coordinate that optimizes the Fourier solver, that both linear and nonlinear turbulent states… (More)

Highly variable flux surface averaged heat fluxes are resolved in gyrokinetic simulations of ion temperature gradient ͑ITG͒ turbulence, even in large systems. Radially propagating fronts or avalanches are also seen. Their propagation lengths in gyroradii and relative amplitude remain constant as simulation size is increased, so the avalanches appear to… (More)

We present a portable platform, called PIC ENGINE, for accelerating Particle-In-Cell (PIC) codes on heterogeneous many-core architectures such as Graphic Processing Units (GPUs). The aim of this development is efficient simulations on future exascale systems by allowing different par-allelization strategies depending on the application problem and the… (More)

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