Application of the parareal algorithm to simulations of ELMs in ITER plasma

Application of the parareal algorithm to simulations of ELMs in ITER plasma

Application of the parareal algorithm to simulations of ELMs in ITER plasma 150 150 Mathew
UKAEA-CCFE-PR(18)27

Application of the parareal algorithm to simulations of ELMs in ITER plasma

This paper explores the application of the parareal algorithm to simulations of ELMs in ITER plasma. The primary focus of this research is identifying the parameters that lead to optimum performance. Since the plasma dynamics vary extremely fast during an ELM cycle, a straightforward application of the algorithm is not possible and a modification to the standard parareal correction is implemented. The size of the time chunks also have an impact on the performance and needs to be optimized. A computational gain of 7.8 is obtained with 48 processors to illustrate that the parareal algorithm can be successfully applied to ELM plasma.

Collection:
Journals
Journal:
Computer Physics Communications
Publisher:
Elsevier
Published date:
26/09/2018