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

中文翻译：

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用于实时控制和数据分析的精细网格中 GPU 优化的快速等离子体平衡重建

P-EFIT 是一种 GPU 并行平衡重建代码，基于 EFIT 框架，但使用 CUDA™（计算统一设备架构）构建，以利用大规模并行图形处理单元 (GPU) 内核来显着加速计算。借助并行化的 Grad-Shafranov 求解器和中等规模的矩阵计算模块，P-EFIT 可以在 EFIT 计算时间的一小部分内准确地再现 EFIT 重建算法。P-EFIT 集成到 EAST 等离子控制系统中，不仅提供控制信号结果，还通过独特设计的功能模块增强了 EAST 等离子控制能力。使用独立和流模式下通过 CREATE-L 和 CREATE-NL 代码获得的 ITER 等离子体平衡的合成磁诊断信号，在大多数考虑的情况下，P-EFIT 具有足够好的准确性和时间延迟性能。P-EFIT 实现了完整的动力学平衡重建算法，并使用 DIII-D 内部等离子体电流和动力学曲线测量以 EFIT 的 1% 成本时间重复 EFIT 结果。所有这些工作表明，P-EFIT 可以实时提供高质量的磁平衡重建，提供高空间分辨率和高速的全动力学平衡重建，支持对托卡马克装置进行更详细、更好的等离子体控制和数据分析。