Study on the Design of Flexible Distributed Systems

随着计算机和通信链路速度的提高，以及两者的成功融合，通过高速链路连接的计算机现在代表着一个巨大的分布式计算系统。与此同时，人与机器之间的交流也变得更加多样化和个性化。用户服务的演变、主机之间的无缝通信、故障恢复和新技术的整合等网络问题每天都会出现。针对具体问题的办法和相应的解决办法是以相当高的成本获得的。然而，一个共同的要求是计算机网络要适应各种变化。研究的目的是首先克服目前信息处理的缺点，同时预见随着新世纪的到来将进一步出现的问题，最后创造一个即使不是最好的也可以优雅地解决这些问题的环境。当信息系统的任何部分发生变化时，灵活的计算环境会智能地、稳态地进化地吸收它。在这项研究中，我们提出了柔性计算机通信网络(FN)作为解决这些网络问题的统一方案。柔性网络的框架可以被认为是一个包围现有网络体系结构的智能外壳。提出了一种面向代理的柔性网络实现方案。现有网络向灵活网络的转变是渐进的，因此是可行的。该项目包括来自五个国家的成员，即东北大学的N.Shiratori教授(东北大学)。柴田教授(东洋大学)和M.Takizawa教授(东京电木大学)来自日本的刘明教授(俄亥俄州立大学))和来自美国加州大学洛杉矶分校的Malio Gerla教授、S.M.Deen教授(基尔大学)。)来自英国的M.Papazoglou教授(蒂尔堡大学)和A Min Tjoa教授(维也纳大学)。理工学院)。

With the increasing speed of computers and communication links, and the successful convergence of both field, computers connected by high speed links now represent and enormously large distributed computing system. At the same time, communication between man and machine is also becoming more diverse and personalized. Networking issues such as evolution of user services, seamless communication between hosts, failure recovery and integration of new technologies arise daily. Problem-specific approaches and corresponding solutions are available at considerable cost. However, a common requirement is adaptability of the computer network to a variety of changes.The purpose of research is first to over- come the drawbacks of present day information processing, simultaneously to foresee the problems that would further sprout with the coming of the new century, and finally to create an environment which could solve those problems in a graceful way, if not optimally. Whenever a change occurs in any part of the information system, the flexible computing environment would absorb it intelligently, homeostatically evolutionarily.In this research, we propose Flexible Computer Communication Networks (FN) as a uniform solution to most of these networking problems. The framework of Flexible Networks can be considered as an intelligent shell enclosing existing networking architectures. An agent - oriented implementation of flexible network is outlined. The conversion of existing network to flexible networks is shown to be incremental, and therefore practicable.The project includes the members from five nations, i. e. Prof. N. Shiratori (Tohoku Univ. ), Prof. Y. Shibata (Toyo Univ. ), and Prof. M. Takizawa(Tokyo Denki Univ. ) from Japan, Prof. Ming T. Liu(Ohio State Univ. ) and Prof. Malio Gerla(UCLA) from USA, Prof. S. M. Deen (Keele Univ. ) from UK, Prof. M. Papazoglou(Tilburg Univ. ) from the Netherland, and Prof. A Min Tjoa(Vienna Univ. of Technology) from Australia.