The Nu-FuSE Project

Nuclear Fusion Simulations at Exascale

Nu-FuSE is an international project (funded through the G8 Research Councils Initiative on Multilateral Research Funding) looking to significantly improve computational modelling capabilities to the level required by the new generation of fusion reactors.

The focus is on three specific scientific areas: fusion plasma; the materials from which fusion reactors are built; and the physics of the plasma edge. This will require computing at the “exascale” level across a range of simulation codes, collaborating together to work towards full integrated fusion tokamak modelling.

The largest supercomputers today can perform over a Petaflop of calculations per second on real scientific applications. However Exascale systems are planned for 2016-2018, performing an Exaflop is a million million million calculations per second, a thousand times faster. To exploit these systems effectively for fusion modelling creates significant challenges around scaling, resiliency, result validation and programmability

The project will be focusing on meeting these challenges by improving the performance and scaling of community modelling codes to enable simulations orders of magnitude larger than are currently undertaken.

In addition the project is working to educate fusion scientists in parallel and exascale programming challenges, and develop a community of fusion scientists with the requisite skills to model fusion plasmas as a whole, rather than focusing on one part of the plasma as is currently common practice.

Nu-FuSE is an international project sponsored by the G8 group of leading industrial nations. It is led by Professor Graeme Ackland at The University of Edinburgh, and includes research teams in Caderache (France, and also the location of the next generation of Fusion reactors, ITER), Edinburgh (UK), Princeton (USA), Garching and Jülich (Germany), Keldysh Institute of Applied Mathematics (Russia), and Tsukuba (Japan).

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