NDLI: Multiple temporal consistency states for dynamical verification of upper bound constraints in grid workflow systems

Content Provider	IEEE Xplore Digital Library
Author	Jinjun Chen Yun Yang
Copyright Year	2005
Description	Author affiliation: Fac. of Inf. & Commun. Technol., Swinburne Univ. of Technol., Melbourne, Vic. (Jinjun Chen; Yun Yang)
Abstract	Conventional upper bound constraint verification in grid workflow systems is based on the key assumption that an upper bound constraint only has two states: consistency and inconsistency. However, due to complexity of grid workflows and dynamic availability of participating grid services, this assumption is too restrictive as there may be some intermediate states. Therefore, in this paper, we introduce four states for an upper bound constraint. Namely, we treat conventional consistency as strong consistency and divide conventional inconsistency into weak consistency, weak inconsistency and strong inconsistency. Correspondingly, we develop their verification methods. For weak consistency, we present some algorithms on how to adjust it to strong consistency without triggering exception handling as in conventional work. For weak inconsistency, we analyse why it can rely on less costly exception handling than conventional work. The final evaluation demonstrates that our four-state approach can achieve better cost-effectiveness than the conventional two-state approach
Starting Page	8
Ending Page	131
File Size	311912
Page Count	124
File Format	PDF
ISBN	0769524486
DOI	10.1109/E-SCIENCE.2005.60
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-05
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability Upper bound Runtime Astrophysics Grid computing Communications technology Large-scale systems Australia Middleware Engines
Content Type	Text
Resource Type	Article

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