PUNCH : a computing portal forthe virtual university

Given that modeling, simulation and computer-aided design are an integral component of themodern practice of science and engineering, virtual universities are faced with the problem ofproviding students with access to simulation programs required for their education. This paperdescribes the Purdue University Networ kComputing Hubs (PUNCH), an extensively-used Web-based computing portal that allows geographically distributed users to share and run unmodifiedtools via standard web browsers. The PUNCH infrastructure has been operational for five years,and has been successfully used to share and disseminate specialized tools and educational materials,and to offer simulation-intensive classes in distance education environments.