Grid-Based Modern Collaborative Design

With the individuation and diversification of requirement, the increasing exploitation of new product and continuous shorten of product cycle has become a common occurrance, which resulting in the intensely marketable competition. For this reason, product innovation is a key factor to enhance the competence of manufacturing enterprise. How to explore high quality and low cost new product is the focus of marketable competition in the twenty first century. Nowadays, Computer Supported Cooperative Design (CSCD) is becomming a research hotspot and leading technology.Collaborative design can effectively support team cooperation in different fields and different regions.It greatly improves the efficiency of product design, and becomes a hot topic. Collaborative design environment is involved in the design, simulation, network technology, information technology, artificial intelligence technology and many other fields.Grid creats new opportunity for the development of collaborative design.Grid is a group of new technologies building on the Internet, which uses high-speed networks to integrate supercomputers, large databases, archival storage devices, advanced visualization devices. It shares resources among number of virtual organizations and collaboratively solve problems, and provides more resources, function and interaction. Applying the theory of grid to CSCD(computer supported collaborative design),many kinds of existed design resources can be utilized completely, the cost of exploring of products and the trading-period can be decreased, quality of products can be improved.The paper introduces the concept and characteristics of grid, and analizes the relation with current some network techniques. It discusses the three architectures of grid and the architecture of Globus Toolkit. By combining the grid middleware and globus toolkit, the paper introduces a GMCD(Grid-based Modern Collaborative Design)framework. The function need, architecture, security and task scheduling are all discussed in detail.Then, based on the studying on the GridSphere portal architecture deeply, we design and implement the GMCDPortal. We have finished the grid application portlet, user management portlet, certificate management portlet and resource browse portlet, and have realized the function of certificate management, job submission and resource browser.The GMCDPortal was designed through using the portlet technology accord with JSR168,so it has nice expansibility and transplantable.