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Lookup NU author(s): Professor Raj Ranjan
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2018, The Author(s). Infrastructure as a service clouds hide the complexity of maintaining the physical infrastructure with a slight disadvantage: they also hide their internal working details. Should users need knowledge about these details e.g., to increase the reliability or performance of their applications, they would need solutions to detect behavioural changes in the underlying system. Existing runtime solutions for such purposes offer limited capabilities as they are mostly restricted to revealing weekly or yearly behavioural periodicity in the infrastructure. This article proposes a technique for predicting generic background workload by means of simulations that are capable of providing additional knowledge of the underlying private cloud systems in order to support activities like cloud orchestration or workflow enactment. Our technique uses long-running scientific workflows and their behaviour discrepancies and tries to replicate these in a simulated cloud with known (trace-based) workloads. We argue that the better we can mimic the current discrepancies the better we can tell expected workloads in the near future on the real life cloud. We evaluated the proposed prediction approach with a biochemical application on both real and simulated cloud infrastructures. The proposed algorithm has shown to produce significantly (∼ 20%) better workload predictions for the future of simulated clouds than random workload selection.
Author(s): Kecskemeti G, Nemeth Z, Kertesz A, Ranjan R
Publication type: Article
Publication status: Published
Journal: Cluster Computing
Print publication date: 01/09/2019
Online publication date: 16/10/2018
Acceptance date: 23/03/2018
Date deposited: 14/11/2018
ISSN (print): 1386-7857
ISSN (electronic): 1573-7543
Publisher: Springer New York LLC
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