Computing Systems in Engineering最新文献_第4页

Performance of level 3 BLAS kernels in a dynamically partitioned data-flow environment 3级BLAS内核在动态分区数据流环境中的性能

Computing Systems in Engineering Pub Date : 1995-08-01 DOI: 10.1016/0956-0521(95)00050-X

P. Berger , S. Gruszka , I. Gottlieb , Y. Singer

{"title":"Performance of level 3 BLAS kernels in a dynamically partitioned data-flow environment","authors":"P. Berger , S. Gruszka , I. Gottlieb , Y. Singer","doi":"10.1016/0956-0521(95)00050-X","DOIUrl":"10.1016/0956-0521(95)00050-X","url":null,"abstract":"<div><p>The Dynamically Partitioned Data-Flow (DPDF) model is based on an original analysis concept of the data dependency graph at the instruction level. Instead of a breadth first analysis, as in a classical Data-Flow Model, we execute instructions along data-dependent paths. As a consequence, data locality can be exploited by reusing results between the execution of consecutive instructions. In addition, the different paths are not statically defined but arise from a dynamical partitioning of the graph. This model presents the advantage to support very small cost dynamic scheduling and multitasking strategies. In order to study the efficiency of this new model, a first architecture has been defined. This architecture is currently limited to a single processor with one serial processing unit but four graph analyzing units (called prefetch units). Each of these prefetch units is able to build dynamically its own execution path inside the Data-Flow graph of an application. The efficiency of this architecture is studied on a numerical benchmark composed of a subset of the Livermore loops and of three routines of the Level 3 BLAS (GEMM, SYRK and TRSM). Our goal in these experimentations is to demonstrate the ability of the four prefetch units to feed the ALU.</p></div>","PeriodicalId":100325,"journal":{"name":"Computing Systems in Engineering","volume":"6 4","pages":"Pages 357-361"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-0521(95)00050-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77347200","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

An experimental evaluation of a peer-model monitoring system for the support of a parallel processing environment 支持并行处理环境的对等模型监测系统的实验评估

Computing Systems in Engineering Pub Date : 1995-08-01 DOI: 10.1016/0956-0521(95)00043-7

JoséMagalhães Cruz , João Falcãoe Cunha

{"title":"An experimental evaluation of a peer-model monitoring system for the support of a parallel processing environment","authors":"JoséMagalhães Cruz , João Falcãoe Cunha","doi":"10.1016/0956-0521(95)00043-7","DOIUrl":"10.1016/0956-0521(95)00043-7","url":null,"abstract":"<div><p>The process of monitoring the machines or computing nodes in a network, and of monitoring the communication traffic between them, is very important to efficiently launch and execute parallel coarse-grained applications or even classical (serial-type) applications, taking advantage of machines in the network that are not heavily used. An experimental software system, named MONSYS, that is capable of monitoring the machines in a network, is presented. MONSYS can be used in the support of an Application Manager system capable of distributing parallel tasks (or classical programs) over the machines in a local area network with the objective of achieving load balancing. It can also be used as a tool in the administration of networks. MONSYS exhibits a highly decentralized and fault tolerant architecture based on the Peer-Model, which, together with its information diffusion algorithms, constitute its prime novelty. A set of experiments that investigate the performance and scalability of a prototype of MONSYS is presented and discussed. The experiments reported show that MONSYS offers a reasonably accurate picture of the internal state of the machines monitored, without being a burden to the network communication channels or to the machines themselves. In fact, the quantitative results obtained indicate that MONSYS can be several times more performant than an equivalent system using a multicast communication scheme for the exchange of machine state information.</p></div>","PeriodicalId":100325,"journal":{"name":"Computing Systems in Engineering","volume":"6 4","pages":"Pages 331-343"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-0521(95)00043-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79028986","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: 1

Porting industrial codes and developing sparse linear solvers on parallel computers 在并行计算机上移植工业代码和开发稀疏线性求解器

Computing Systems in Engineering Pub Date : 1995-08-01 DOI: 10.1016/0956-0521(95)00033-X

Michel J. Dayde , Iain S. Duff

引用次数: 8

A parallel approach to the analytic hierarchy process decision support tool 一个并行的层次分析法过程决策支持工具

Computing Systems in Engineering Pub Date : 1995-08-01 DOI: 10.1016/0956-0521(95)00045-3

Luis Dias , João Paulo Costa , João Namorado Clímaco

{"title":"A parallel approach to the analytic hierarchy process decision support tool","authors":"Luis Dias , João Paulo Costa , João Namorado Clímaco","doi":"10.1016/0956-0521(95)00045-3","DOIUrl":"10.1016/0956-0521(95)00045-3","url":null,"abstract":"<div><p>The Multiple Criteria Decision Aiding methods dedicated to discrete problems follow different philosophies and strategies for selecting, clustering or ranking alternatives. This work presents a tool using one such method—the Analytic Hierarchy Process (AHP). The Decision Maker (DM) can structure his criteria as a hierarchy tree having the alternatives as leaf nodes. The DM must then build matrices for each node by performing pairwise comparisons between its children. The AHP finds the weights of each child concerning the parent criterion by calculating the elements of the eigenvector corresponding to the maximum eigenvalue of the comparison matrix. Weights are then combined in order to obtain the influence of each alternative on the top of the hierarchy. A DM expects that a Decision Support Tool works faster than he/she does. In order to achieve speed a parallel approach was developed. Parallel implementations described in this work follow different message-passing strategies and capitalise on the fact that the vector of weights for each matrix can be calculated independently. The authors used a network of four Inmos Transputers. Research will focus on finding which implementation will run faster and how the DMs options affect the speedups obtainable.</p></div>","PeriodicalId":100325,"journal":{"name":"Computing Systems in Engineering","volume":"6 4","pages":"Pages 431-436"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-0521(95)00045-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83075758","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: 8

Parallel performance of Jacobi eigenvalue solution Jacobi特征值解的并行性能

Computing Systems in Engineering Pub Date : 1995-08-01 DOI: 10.1016/0956-0521(95)00035-6

Makan Pourzand , Bernard Tourancheau

引用次数: 1

Computer-aided multiscale modeling tools for composite materials and structures 复合材料和结构的计算机辅助多尺度建模工具

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00019-V

V. Belsky, M.W. Beall, J. Fish, M.S. Shephard, S. Gomaa

{"title":"Computer-aided multiscale modeling tools for composite materials and structures","authors":"V. Belsky, M.W. Beall, J. Fish, M.S. Shephard, S. Gomaa","doi":"10.1016/0956-0521(95)00019-V","DOIUrl":"10.1016/0956-0521(95)00019-V","url":null,"abstract":"<div><p>This paper presents recent research efforts at Rensselaer Polytechnic Institute aimed at developing computer-aided multiscale modeling tools for composite materials and structures aimed at predicting the <em>macromechanical</em> (overall) structural response, such as critical deformation, vibration and buckling modes, as well as various failure modes on the <em>mesomechanical</em> (lamina) level, such as delamination and ply buckling, and on the micromechanical (the scale of microconstituents) level, such as debonding, microbuckling, etc.</p><p>The building blocks of this technology are (i) idealization error estimators aimed at quantifying the quality of the numerical and mathematical models of composites, (ii) multigrid technology aimed at superconvergent solution of the multiscale computational models, (iii) mathematical homogenization theory aimed at constructing inter-scale transfer operators for rapid and reliable information flow between the scales, (iv) system identification for <em>in situ</em> characterization of the phases and their interface, and (v) multiscale model construction and visualization.</p></div>","PeriodicalId":100325,"journal":{"name":"Computing Systems in Engineering","volume":"6 3","pages":"Pages 213-223"},"PeriodicalIF":0.0,"publicationDate":"1995-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-0521(95)00019-V","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75426581","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: 15

Iterative and direct solvers for interface problems with lagrange multipliers 具有拉格朗日乘子的界面问题的迭代和直接求解

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00017-T

J. Fish, V. Belsky, M. Pandheeradi

引用次数: 8

The concurrent element level processing for nonlinear dynamic analysis on a massively parallel computer 大规模并行计算机上非线性动力分析的并行单元级处理

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00022-R

Sang Y. Synn, Robert E. Fulton

引用次数: 2

The performance prediction of a parallel skyline solver and its implementation for large scale structure analysis 平行天际线求解器的性能预测及其在大型结构分析中的实现

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00021-Q

Sang Y. Synn, Robert E. Fulton

引用次数: 6

Performance of iterative methods in ANSYS on cray parallel/vector supercomputers ANSYS中迭代方法在大型并行/矢量超级计算机上的性能

Computing Systems in Engineering Pub Date : 1995-06-01 DOI: 10.1016/0956-0521(95)00016-S

Eugene L. Poole , Michael A. Heroux , Pravin Vaidya , Anil Joshi

引用次数: 6