ID 原文 译文
14955 目前数模混合仿真多采用并行计算技术提高计算性能。 At present,digital-analog hybrid simulation mainly uses parallel computing technology to improve computing performance.
14956 随着处理器和集群技术的发展，异构集群系统逐渐成为高性能计算系统的主要构建方式。 With the development of processor and cluster technology, heterogeneous cluster systems have gradually become the primary construction method of high-performance computing systems.
14957 针对多层次的系统架构，已有的电网划分方式无法充分利用集群计算能力。 For the multi-level system architecture,the existing power grid division methods can not fully use the cluster computing power.
14958 如何应对多层次核间通信延迟变化问题，及引入设备交互导致的节点资源不对称问题是数模混合仿真任务划分与映射的新挑战。 Dealing with the high latency of cross-layer communication and the unequal number of available processor cores on each computing node due to heterogeneous acceleration equipment is the main challenge of the partitioning and mapping algorithm.
14959 针对中国电力科学研究院自研电磁暂态仿真系统ADPSS，基于最小割划分设计了两阶段的电网划分与进程映射一体化优化算法，在计算负载均衡和最小化通信上取得更好的平衡，进一步降低了电磁暂态仿真的通信时间。 Aiming at the electromagnetic transient simulation system ADPSS developed by China Electric Power Research Institute,this paper designs a two-stage integrated optimization algorithm of power grid division and process mapping, which achieves a better load balance and minimizing communication,and further reduces the calculation time of the electromagnetic transient simulation.
14960 同时，该算法有效解决了集群节点资源不对称情况下的任务优化映射问题。 The algorithm is based on the min-cut partition and effectively solves the optimal mapping of sub-networks of unequal sizes on heterogeneous cluster systems.
14961 通过在西北和华东真实电网算例上的模拟测试，所提出算法较ADPSS默认划分与映射算法取得了平均40%和50%的通信性能提升，平均10%和12%的总体计算性能提升。 The simulation test was realized on the real power grid in Northwest and East China,compared with the ADPSS default partition and mapping algorithm,the proposed algorithm achieves an average communication performance improvement of 40% and 50% and an average overall computing performance improvement of 10% and 12%.
14962 传统的CORDIC(坐标旋转计算机)算法进行高精度反正切求解时存在迭代次数多、收敛速度慢、资源消耗大等问题，提出一种改进的高精度CORDIC算法。 The traditional CORDIC(Coordinate Rotation Computer) algorithm has many iterations,slow convergence speed,and large resource consumption for high-precision arctangent.An improved high-precision CORDIC algorithm is proposed.
14963 该方法利用传统的CORDIC算法迭代数次后得到正弦信息，并利用角度和正弦值近似的原理，对迭代后的结果进行误差补偿，有效提高了相同迭代步数下的计算精度。 This method uses the traditional CORDIC algorithm to obtain the sine information after several iterations,and uses the sine value to compensate the error of iteration results,which effectively improves the calculation accuracy.
14964 实验数据表明：32位改进的CORDIC算法，保证绝对误差小于5×10-9情况下，查找表资源消耗降低了64.8%，触发器资源消耗降低了35.3%，输出时延降低了53.3%。 Experimental data shows that the 32 bit improved CORDIC algorithm ensures that the absolute error is less than 5 ×10-9,the resource consumption of the lookup table is reduced by64.8%,the resource consumption of the flip-flop is reduced by 35.3%,and the output delay is reduced by 53.3%.