DISCOA: architectural adaptations for security and QoS
SESS '05 Proceedings of the 2005 workshop on Software engineering for secure systems—building trustworthy applications
Introspecting continuations in order to update active code
Proceedings of the 1st International Workshop on Hot Topics in Software Upgrades
Supporting adaptable applications in grid resource management systems
GRID '07 Proceedings of the 8th IEEE/ACM International Conference on Grid Computing
Dynamic adaptation for grid computing
EGC'05 Proceedings of the 2005 European conference on Advances in Grid Computing
A feedback-based decentralised coordination model for distributed open real-time systems
Journal of Systems and Software
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Distributed applications may use sophisticated runtime adaptation strategies to meet their performance or quality-of-service goals. Coordinating an adaptation that involves multiple processes can require complex communication or synchronization, in addition to communication in the base application. We propose conceptually simple high-level directives and a sophisticated runtime algorithm for coordinating adaptation automatically and transparently in distributed applications. The coordination directives specify when to adapt, in terms of the relative computational progress of each relevant process. The coordination algorithm relies on simple compiler transformationsto track the progress of the processes, and performs the adaptive changes locally and asynchronously at each process. Measurements of the runtime overhead of the automatic coordination algorithm for two adaptive applications (a parallel PDE solver and a distributed video tracking code) show that the overhead is less than 1% of execution time for both these codes, even with relatively frequent adaptations, and does not grow signi.cantly with the number of coordinating processes.