Intel Research Seminar

DATE: Thursday , May 2, 2002
TIME: Noon - 1:30 pm
PLACE: Intel Seminar (417 S. Craig Street - 3rd Floor)

Eyal de Lara
Bell Laboratories

Puppeteer: Component-Based Adaptation for Mobile Computing

Component-based adaptation is a novel approach for adapting applications to the limited availability of resources such as bandwidth and power in mobile environments. Component-based adaptation works by calling on the run-time APIs that modern component-based applications export. Because source code modification is not necessary, even proprietary applications such as productivity tools from Microsoft's Office suite can be adapted. Moreover, new adaptive behavior can be added to applications long after they have been deployed. Even if source code is available, development time for implementing adaptation is much reduced.

In addition, the ease with which adaptations can be implemented in this framework has enabled us to explore new avenues in adaptation. First, we have developed the first adaptive system to support document editing and collaboration over bandwidth-limited links. The key insight gathered from this work is that support for adaptation is orthogonal to concurrency and consistency mechanisms, and therefore can be integrated easily in existing systems. Second, we have developed a hierarchical adaptive transmission scheduler to support coordinated multi-application adaptation.

We have demonstrated the effectiveness of component-based adaptation by implementing a system called Puppeteer, which has allowed us to adapt widely deployed applications, such as productivity tools from Microsoft's Office suite and Sun Microsystems' OpenOffice suite. Although the APIs of these applications impose some limitations, we have been able to implement a wide range of adaptation policies for reading, editing, and collaboration, with modest implementation effort and good performance results.

Eyal de Lara is a Ph.D. candidate in the Electrical and Computer Engineering department at Rice University. His research interests include distributed systems, mobile and ubiquitous computing, collaborative work, and networking. Eyal received his M.S. from Rice University and his B.S. from the Instituto Tecnologico de Monterrey, and has spent a summer at Xerox PARC. He was recently awarded an IBM Research Fellowship for his work on Puppeteer and Component-Based Adaptation.

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