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The Illinois GRACE Project: Global Resource Adaptation through CoopEration

07/2002;
Source: CiteSeer

ABSTRACT Mobile systems primarily processing multimedia data are expected to become a dominant computing platform for a variety of application domains. The design of such systems imposes several new challenges, as it must consider demanding, dynamic, and multidimensional resource requirements and constraints, with energy becoming a first-class resource. At the same time, the ability of multimedia applications to trade off output quality for system resources and the difference between their peak and average demands offers a huge opportunity for optimization.

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    Article: COCA: A contract-based infrastructure for collaborative quality-of-service adaptation
    Zhinan Zhou, Philip K Mckinley
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    ABSTRACT: Achieving acceptable quality of service in highly dynamic comput-ing environments requires not only adaptation and reconfiguration of individual components of the system, but also collaboration among these components. To address the integration and collaboration of adaptive computing components, we propose COCA, a contract-based collaborative adaptation infrastructure. COCA uses contract specifications to describe the relationships among different system components and to guide system-wide behavior. COCA also provides a set of reusable adaptation services that enable legacy components to be integrated into an adaptive system. We demonstrate the use of COCA to construct an adaptive multimedia conferencing system from a collection of existing components that were not originally designed for interoperation.
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Keywords

application domains
 
average demands
 
first-class resource
 
huge opportunity
 
multidimensional resource requirements
 
multimedia applications
 
output quality
 
system resources
 
systems