by Michael Welzl
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.
of Michael Welzl
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".
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.