GPU-optimized fast plasma equilibrium reconstruction in fine grids for real-time control and data analysis

摘要: P-EFIT, a GPU parallel equilibrium reconstruction code, is based on the EFIT framework, but built with CUDA™ (Compute Unified Device Architecture) to take advantage of massively Graphical Processing Unit (GPU) cores significantly accelerate computation. With parallelized Grad-Shafranov solver and middle-scale matrix calculation modules, P-EFIT can accurately reproduce algorithms at fraction computational time. Integrated into EAST plasma control system, not only provides signal results also enhances capacity unique designed function modules. Using synthetic magnetic diagnostic signals from ITER equilibria obtained by CREATE-L CREATE-NL codes in standalone streaming mode, has good enough accuracy time latency performance most considered cases. achieves full kinetic repeats DIII-D internal current profile measurements one-percent cost EFIT. All these works suggest that provide quality real-time, offer high spatial resolution speed, support more detailed, better data analysis for tokamak devices.