Tutorial :

Grid InterNetworking
by Michael Welzl

Abstract
Due to a continuous demand to build "massively distributed" Grids at an increasing size, Grids should not merely be looked at as a set of supercomputers and clusters which are interconnected via leased lines rather, the underlying infrastructure is the Internet. Grid applications have special requirements regarding network usage, and they show some unusual properties from the network perspective. It is therefore obvious and reasonable to optimize Internet technology for such usage.

This tutorial will discuss the special properties and requirements of Grid applications with respect to the network and provide concrete examples of Internet enhancements that are Grid-specific. In addition, the long-term value of carrying out research on Grid InterNetworking will be elaborated on, providing a basis for future research that will hopefully lead to many interesting submissions to GridNets 2007.

Biography of Michael Welzl
Michael Welzl received his master's degree from the University of Linz / Austria and passed his Ph.D. defense at the University of Darmstadt / Germany with distinction in November 2002. His Ph.D. thesis "Scalable Performance Signalling and Congestion Avoidance", which was written under the supervision of Prof. Max Muehlhaeuser (Univ. Darmstadt, Germany) and Prof. Jon Crowcroft (Univ. Cambridge, UK), was published by Kluwer as a research monograph in 2003 and received an award from the University of Innsbruck, Austria as well as the "Best Dissertation Award 2004" from the German GI / ITG section on Communication and Distributed Systems.
Dr. Welzl spent two years as a research assistant at the Telecooperation department, University of Linz / Austria, before joining the faculty of the newly founded Institute of Computer Science at the University of Innsbruck / Austria in November 2001, where he now heads a research team on Network Support for Grid Computing in the context of the Distributed and Parallel Systems group. He is the primary investigator of several funded research projects and coordinator of the European IST FP6 STREP project "EC-GIN".
Dr. Welzl is co-chair of the IRTF Internet Congestion Control Research Group (ICCRG), and he actively participates in several IETF and IRTF groups as well as the Global Grid Forum. He contributed to academic workshops, conferences and journals, acting as author, tutorial presenter, general co-chair, local chair, PC member, session chair and reviewer and recently published the book "Network Congestion Control: Managing Internet Traffic" (John Wiley and Sons Ltd). He teaches and taught courses on topics such as networks, multimedia, operating systems, programming and algorithms and data structures, co-supervised master's theses and supervised numerous bachelor theses and student projects.