Development of gyrokinetic toroidal 5D full-f Eulerian code GT5D on Helios and K-computer

Idomura, Yasuhiro   

This talk reviews the development of the gyrokinetic toroidal five dimensional full-f Eulerian code GT5D, and its application to plasma turbulence research, which have been conducted on the Helios supercomputer and the K-computer during the IFERC-CSC project. In the former half period, computing techniques were developed towards larger scale ion temperature gradient driven turbulence simulations, and strong scaling over the full system of the K-computer was achieved by advanced communication overlap techniques. In the latter half period, a new kinetic electron model was developed towards trapped electron mode turbulence simulations, and a mechanism of momentum transport in electron heating modulation experiments was clarified.