[Colloq] Reminder: Hiring Talk *TODAY, March 21, 10:30* Patrick Eugster, SUN Microsystems

Rachel Kalweit rachelb at ccs.neu.edu
Mon Mar 21 09:25:45 EST 2005


College of Computer and Information Science Colloquium

Presents:
Patrick Eugster
SUN Microsystems, Switzerland

Who will speak on:
Abstractions and Algorithms for Pervasive Programming


Date: Monday, March 21, 2005
Time: 10:30am
Location: 366 West Village H
Northeastern University

Abstract:
Through the continuously increasing number of devices equipped with
Computing and communication capabilities, the vision of "pervasive
computing" is materializing. Computing has become inherently
distributed, but with the power of pervasion comes complexity, as
typical applications involve more and more components, both hard- and
software ones. This places yet more burden on the application developer,
which namely has to deal with aspects of the underlying infrastructure
such as (lacks of) availability and reliability of communication and
hosts, in addition to software aspects, such as extensibility,
reusability, and adaptability of software components. These constraints
ask for new programming paradigms which account for the dynamism of
modern distributed settings. A fundamental concern consists in
minimizing coupling of components.

This talk presents abstractions and algorithms for programming in
pervasive settings, centered around a candidate abstraction called
type-based publish/subscribe (TPS). TPS combines the loose coupling
provided by the publish/subscribe communication style with high-level
guarantees such as type safety and encapsulation. We present an overview
of two ways of making TPS accessible to the programmer in the Java
programming language, a first one based on specific primitives added to
the language, and a second one making use of recent inherent features of
Java. Being essentially a multicast primitive, TPS is implemented mainly
through multicast algorithms. We outline a set of such algorithms ---
designed and implemented in the context of TPS --- which follow a
randomized approach. Through these algorithms, we discuss the benefits
of probabilistic approaches for pervasive computing, as well as the
difficulties encountered when providing probabilistic guarantees to the
programmer.

Host: Karl Lieberherr



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