FIESTA 4: optimized Feynman integral calculations with GPU support

This paper presents a new major release of the program FIESTA (Feynman Integral Evaluation by a Sector decomposiTion Approach). The new release is mainly aimed at optimal performance at large scales when one is increasing the number of sampling points in order to reduce the uncertainty estimates. The release now supports graphical processor units (GPU) for the numerical integration, methods to optimize cluster-usage, as well as other speed, memory, and stability improvements.本文介绍了程序FIESTA（Feynman Integral Evaluation by a Sector decomposiTion Approach）的全新主版本更新。本次更新的核心目标是在大规模场景下实现最优性能，以适配通过增加采样点数来降低不确定性估计的需求。此次更新现已支持基于图形处理器（Graphics Processing Unit，GPU）的数值积分任务，新增了集群资源使用优化方法，并在运行速度、内存占用与稳定性方面完成了多项改进。