Solution, Analysis and Control of Simultaneous, Nonlinear, Dynamic System of Equations on CYBER 205 and IBM 3090

CYBER 205 和 IBM 3090 上联立非线性动态方程组的求解、分析和控制

• 批准号: 8709119
• 负责人: Albert Ando
• 金额: --
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8709119&HistoricalAwards=false
• 关键词: Solution; Analysis; Control; Simultaneous; Nonlinear

This project brings the power of the vector processor (supercomputer) to bear on solving large models of the U.S. economy. The supercomputer is playing a more and more fundamental role in economic analysis. In the past, models which were built for analytical tractability often incorporated unrealistic behavioral assumptions. The supercomputer, due to its speed, has decreased the need for such a high degree of tractability and allowed for more realistic models. However, a cost is being paid by researchers trying to use the supercomputer. The programming code used to solve models on a standard mainframe is not readily transportable to the vector processor, and typically does not make full use of the computational speed. At present some economic analysts are doing pioneering work on developing algorithms and codes for the vector processor to solve economic problems. This project is part of that work. Technically, Professor Ando compares the computational power of the CYBOR 205 and the IBM 3090 supercomputers for solving large macroeconomic models. He has shown in past work that the CYBOR 205 is disappointingly slow in carrying out the necessary computations. There is evidence that the IBM 3090 is much faster and requires less modification of code to carry out the same computations. This project compares the speed and analytical accuracy of the two machines by estimating stochastic nonlinear equations of a very large model of the U. S. economy. If such differences in computational speed, set up costs, and coding transportability are inherent in the machines themselves, this work will provide very useful information to other researchers doing economic analysis.

这个项目带来了向量处理器（超级计算机）的力量 来解决美国经济的大型模型。 的 超级计算机在经济中发挥着越来越重要的作用 分析. 在过去，为分析而建立的模型 顺从性往往包含不切实际的行为假设。 超级计算机，由于其速度，已经减少了这样的需求， 高度的易处理性，并允许更现实的模型。 然而，研究人员正在付出代价， 超级计算机 用于在 标准主机不容易转移到矢量 处理器，并且通常不充分利用计算 速度 目前，一些经济分析家正在做开创性的工作， 为向量处理器开发算法和代码， 经济问题。 这个项目是这项工作的一部分。 从技术上讲，安藤教授比较了 CYBOR 205和IBM 3090超级计算机用于解决大型 宏观经济模型。 他在过去的工作中表明，CYBOR 205是 在进行必要的计算时慢得令人不快。 有证据表明，IBM 3090速度更快，要求更少 修改代码以执行相同的计算。 这个项目 比较了两台机器的速度和分析精度， 估计的随机非线性方程的一个非常大的模型的 联合S.经济 如果计算速度有这样的差异， 成本和编码可运输性是机器固有的 这项工作将为其他人提供非常有用的信息。 研究人员进行经济分析。