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Erschienen in:
2006 | OriginalPaper | Buchkapitel
Using Speculative Push for Unnecessary Checkpoint Creation Avoidance
verfasst von : Arkadiusz Danilecki, Michał Szychowiak
Erschienen in: Distributed Applications and Interoperable Systems
Verlag: Springer Berlin Heidelberg
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This paper discusses a way of incorporating speculation techniques into Distributed Shared Memory (DSM) systems with checkpointing mechanism without creating unnecessary checkpoints. Speculation is a general technique involving prediction of the future of a computation, namely accesses to shared objects unavailable on the accessing node (
read faults
). Thanks to such predictions objects can be pushed to requesting nodes before the actual access operation is performed, resulting, at least potentially, in a considerable performance improvement. This mechanism is a foundation for the proposed SpecCkpt protocol based on independent checkpointing integrated with a coherence protocol for a given consistency model introducing little overhead. It ensures the consistency of checkpoints, at the same time allowing a fast recovery from failures.