计算机集群技术的计算环境与拓扑结构实现

针对传统计算机指令的串行执行方式,文中在系统阐述计算机集群技术发展的基础上,介绍了集群技术的一般拓扑结构和集群计算环境,并对计算机集群技术的发展作了相关的预测和展望.集群技术具有并行性和可扩展性,提高了计算机的性能价格比.     

集群的生命力

集群技术发展迅速 IA服务器集群是伴随着计算机芯片技术、网络技术、集成技术和Linux的快速发展而出现的新产品。集群是一个复杂的系统,由于IA服务器集群是基于Linux操作系统平台的集群高性能并行计算机,因此它更像是计算机。     

基于TUXEDO的集群技术实现

随着计算技术的持续发展,对于高性能计算不断增长的需求,促进了计算机集群技术的发展和应用。本文概述了基于TUXEDO中间件实现计算机集群,提供跨平台、高性能的计算机运行环境,满足企业业务快速增长的需求。     

集群计算机

集群计算机是当前并行处理系统研究的热点,本文简要介绍了集群计算机的系统结构、组件、对国际上几种典型的集群研究项目作了某些比较,并分析了集群技术未来发展的趋势。     

集群计算机监控技术研究

集群计算系统在大数据处理、指挥调度等领域应用越来越广泛,保障集群系统稳定运行迫在眉睫。本文针对集群内计算机管理难度大、故障影响大等问题,明确集群计算机的监控需求,研究集群计算机的监控技术,分析Cacti、Parmon、Nagios、Zenoss、Ganglia等集群监控软件的特点,通过试验对比,总结各监控软件的功能特点,探讨集群计算机监控技术的发展方向。     

集群技术与集群系统

一、集群发术产生的背景随着计算机应用的不断发展，人们提出各种各样更高的要求，正是这些要求推动着集群（Cluster）技术的产生和发展这些要求主要反映在以下几方面：不断增长的能力和投资保护人们只有在使用计算机的过程中，才能不断认识计算机，才会不断扩大计算机的应用，提出各种更高、更深层次的要求。因此，对计算机系统的要求，将随着应用的发展而越来越高。如果你建立系统时，系统的能力只能满足当前的需要，就会面临应用发展后怎么提高系统能力的问题。老机器淘汰，用新机器取代就会产生原有软硬件投资、应用开发的投资、培训的…     

并行处理 永不停顿

IA服务器集群是伴随着计算机芯片技术、网络技术,集成技术和Linux的快速发展而出现的新产品。许多高性能的计算,如果完全选择基于Unix的超级计算机系统,则需要巨大的投资。而使用Linux集群并行计算机,在相同并行运算能力下,IA服务器集群平台仅需Unix并行机十分之一左右的投资,而且还把性能和速度提高几倍。 正是因为以上优点,基于Linux平台的IA服务器集群并行机具有更强的竞争力,从而成为密集型科学计算领域瞩目的焦点。 近年来,国产服务器厂商抓住了集群技术带来的机遇,在高性能计算领域不断取得突破。以曙光、联想等为代表的国产服务器厂商不仅在国内高性能市场占得了一席之地、而且在国际上也获得了荣誉。 本期《服务器》,我们将分别介绍联想应用于数据库的集群方案和曙光大型机集群方案。     

计算机集群系统中的网络技术

本文介绍了计算机集群系统中的高速互连网技术,着重阐述了几种在集群系统中广泛使用的网络类型及其主要技术和发现状,最后介绍几种网络通信协议。     

办公计算机集群化控制技术特点分析

计算机网络是办公自动化主控平台,为用户提供了多功能数据处理模式,满足日常办公数据一体化处理作业要求。为了改变传统办公网络结构性能不足,新时期对办公计算机需调整原有的控制平台,以集群化控制技术为中心建立多功能办公体系。本分析了计算机集群技术及应用特点,对办公计算机集群系统层次实施详细划分,阐述了集群控制技术的主要应用模式。     

计算机集群技术及其实施要点

本文首先对计算机集群技术进行了比较全面的介绍.然后通过对常见的集群技术和集群结构的描述,详细解释了服务器镜像技术、应用程序错误接管集群技术和容错集群技术.接着就集群技术实施工程中的要点进行了剖析,特别说明了CPU的个数与集群技术的关系.最后对计算机集群技术的发展以及扩展进行了一定的阐述.     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.