论文部分内容阅读
To achieve real-time control of tokamak plasmas,the equilibrium reconstruction has to be completed sufficiently quickly.For the case of an EAST tokamak experiment,real-time equilibrium reconstruction is generally required to provide results within 1ms.A graphic processing unit (GPU) parallel Grad-Shafranov (G-S) solver is developed in P-EFIT code,which is built with the CUDATM architecture to take advantage of massively parallel GPU cores and significantly accelerate the computation.Optimization and implementation of numerical algorithms for a block tri-diagonal linear system are presented.The solver can complete a calculation within 16 μs with 65 × 65 grid size and 27 μs with 129 × 129 grid size,and this solver supports that P-EFIT can fulfill the time feasibility for real-time plasma control with both grid sizes.