Proceedings of the Fifth Distributed Memory Computing Conference, 1990.最新文献_第2页

Concurrent DASSL Applied to Dynamic Distillation Column Simulation 并发DASSL在动态精馏塔模拟中的应用

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.555439

A. Skjellum, M. Morari

{"title":"Concurrent DASSL Applied to Dynamic Distillation Column Simulation","authors":"A. Skjellum, M. Morari","doi":"10.1109/DMCC.1990.555439","DOIUrl":"https://doi.org/10.1109/DMCC.1990.555439","url":null,"abstract":"The accurate, high-speed solution of systems of ordinary differential-algebraic equations (DAE’s) of low index is of great importance in chemical, electrical and other engineering disciplines. Petzold’s Fortran-based DASSL is the most widely used sequential code for solving DAE’s. We have devised and implemented a completely new C code, Concurrent DASSL, specifically for multicomputers and patterned on DASSL. In this work, we address the issues of data distribution and the performance of the overall algorithm, rather than just that of individual steps. Concurrent DASSL is designed as an open, application-independent environment below which linear algebra algorithms may be added in addition to standard support for dense and sparse algorithms. The user may furthermore attach explicit data interconversions between the main computational steps, or choose compromise distributions. A “problem formulator” (simulation layer) must be constructed above Concurrent DASSL, for any specific problem domain. We indicate performance for a particular chemical engineering application, a sequence of coupled distillation columns. Future efforts are cited in conclusion.","PeriodicalId":204431,"journal":{"name":"Proceedings of the Fifth Distributed Memory Computing Conference, 1990.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128019193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

An Orthogonal Multiprocessor With Snooping Caches 具有窥探缓存的正交多处理器

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.556275

P. Raja, S. Ganesan

引用次数: 1

A Scheme for Supporting Automatic Data Migration on Multlcomputers 支持多台计算机上数据自动迁移的方案

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.556314

S. Mirchandaney, J. Saltz, P. Mehrotra, H. Berryman

引用次数: 20

A Hypercube Application in Large Scale Composite Materials Modeling 超立方体在大规模复合材料建模中的应用

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.555425

C. Baldwin, S. Durham, J. D. Lynch, W. J. Padgett

{"title":"A Hypercube Application in Large Scale Composite Materials Modeling","authors":"C. Baldwin, S. Durham, J. D. Lynch, W. J. Padgett","doi":"10.1109/DMCC.1990.555425","DOIUrl":"https://doi.org/10.1109/DMCC.1990.555425","url":null,"abstract":"This large scale application combines several areas of research to develop computational models for simulating the failure mechanisms of composite materials consisting of brittle fibers (such as carbon) embedded in a matrix material (such as epoxy resin). The simulations combine the ideas of structural stress analysis, numerical linear algebra, and visualization techniques to model the behavior of fibrous composites under uniaxial tensile load. This will allow laboratory experiments to be extrapolated more accurately to real applications, providing an enhanced capability to optimize designs of large structures made of composite materials with less extensive and costly experimental programs. Further, system performance and reliability may be improved substantially. In this paper a brief discussion of the theory of composite materials as it relates to the simulations will first be given. Next the procedures used to generate and analyze the structure will be presented. The computational techniques used to perform the simulation will be given as well as results from selected test cases. A summary of results and future directions in this research will be given at the end of the paper.","PeriodicalId":204431,"journal":{"name":"Proceedings of the Fifth Distributed Memory Computing Conference, 1990.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129395267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parallel Nonlinear Optimization 并行非线性优化

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.555394

Ron Daniel

引用次数: 4

Applications of Adaptive Data Distributions 自适应数据分布的应用

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.555391

E. F. Van de Velde, J. Lorenz

{"title":"Applications of Adaptive Data Distributions","authors":"E. F. Van de Velde, J. Lorenz","doi":"10.1109/DMCC.1990.555391","DOIUrl":"https://doi.org/10.1109/DMCC.1990.555391","url":null,"abstract":"Continuation methods compute paths of solutions of nonlinear equations that depend on a parameter. This paper examines some aspects of the multicomputer implementation of such methods. The computation is done on the Symult Series 2010 multicomputer. One of the main issues in the development of concurrent programs is load balancing, achieved here by using appropriate data distributions. In the continuation process, a large number of linear systems have to be solved. For nearby points along the solution path, the corresponding system matrices are closely related to each other. Therefore, pivots which are good for the LU-decomposition of one matrix are likely to be acceptable for a whole segment of the solution path. This suggests to choose certain data distributions that achieve good load balancing. In addition, if these distributions are used, the resulting code is easily vectorized. To test this technique, the invariant manifold of a system of two identical nonlinear oscillators is computed as a function of the coupling between them. This invariant manifold is determined by the solution of a system of nonlinear partial differential equations that depends on the coupling parameter. A symmetry in the problem reduces this system to one single equation, which is discretized by finite differences. The solution of this discrete nonlinear system is followed as the coupling parameter is changed.","PeriodicalId":204431,"journal":{"name":"Proceedings of the Fifth Distributed Memory Computing Conference, 1990.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132948075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conjugate Gradient Methods for Spline Collocation Equations 样条配配方程的共轭梯度法

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.555433

C. Christara

引用次数: 4

Synchronized Blocking in a Distributed Memory System 分布式内存系统中的同步阻塞

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.556390

C. G. Rommel

引用次数: 0

An SIMD Multiprocessor Using DSP Microprocessors 采用DSP微处理器的SIMD多处理器

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.556273

S. Ganesan, P. Raja

引用次数: 0

Graceful Degradation on Hypercube Multiprocessors Using Data Redistribution 使用数据重分配的超立方体多处理器的优雅降级

Proceedings of the Fifth Distributed Memory Computing Conference, 1990. Pub Date : 1990-04-08 DOI: 10.1109/DMCC.1990.556408

C. Li, W. Fuchs

引用次数: 14