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SpeQuloS: A QoS Service for BoT Applications Using Best Effort Distributed Computing Infrastructures
Delamare S., Fedak G., Kondo D., Lodygensky O.
Proceedings of the 21st ACM International Symposium on High Performance Distributed Computing (HPDC'12), Delft : Pays-Bas (2012) - http://hal.inria.fr/hal-00757074
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SpeQuloS: A QoS Service for BoT Applications Using Best Effort Distributed Computing Infrastructures
Simon Delamare ()1, Gilles Fedak1, Derrick Kondo2, Oleg Lodygensky3
1 :  LIP Lyon / Inria Grenoble Rhône-Alpes - AVALON
http://avalon.ens-lyon.fr/
CNRS : UMR5668 – INRIA – École Normale Supérieure (ENS) - Lyon – Laboratoire d'informatique du Parallélisme – Université Claude Bernard - Lyon I (UCBL)
ENS Lyon 46 allée d'Italie 69364 Lyon Cedex 07
France
2 :  INRIA Grenoble Rhône-Alpes / LIG laboratoire d'Informatique de Grenoble - MESCAL
http://mescal.imag.fr/
CNRS : UMR5217 – INRIA – Université Joseph Fourier - Grenoble I – Institut polytechnique de Grenoble (Grenoble INP) – Laboratoire d'Informatique de Grenoble : LIG
Inria Grenoble - Rhône-Alpes 655 avenue de l'Europe - Montbonnot 38334 Saint Ismier Cedex
France
3 :  LAL - Laboratoire de l'Accélérateur Linéaire
http://www.lal.in2p3.fr/
CNRS : UMR8607 – IN2P3 – Université Paris XI - Paris Sud
Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex
France
Exploitation of Best Effort Distributed Computing Infras- tructures (BE-DCIs) allow operators to maximize the uti- lization of the infrastructures, and users to access the un- used resources at relatively low cost. Because providers do not guarantee that the computing resources remain available to the user during the entire execution of their applications, they offer a diminished Quality of Service (QoS) compared to traditional infrastructures. Pro ling the execution of Bag-of-Tasks (BoT) applications on several kinds of BE-DCIs demonstrates that their task completion rate drops near the end of the execution. In this paper, we present the SpeQuloS service which en- hances the QoS of BoT applications executed on BE-DCIs by reducing the execution time, improving its stability, and reporting to users a predicted completion time. SpeQuloS monitors the execution of the BoT on the BE-DCIs, and dynamically supplies fast and reliable Cloud resources when the critical part of the BoT is executed. We present the design and development of the framework and several strategies to decide when and how Cloud resources should be provisioned. Performance evaluation using simulations shows that SpeQuloS ful ll its objectives. It speeds-up the execution of BoTs, in the best cases by a factor greater than 2, while offloading less than 2.5% of the workload to the Cloud. We report on preliminary results after a complex deployment as part of the European Desktop Grid Infrastructure.
Anglais

Communications avec actes
2012
internationale
Proceedings of the 21st ACM International Symposium on High Performance Distributed Computing (HPDC'12)
Delft
Pays-Bas
18/06/2012
22/06/2012
Dick H. J. Epema, Thilo Kielmann, Matei Ripeanu
ACM
173--186
ISBN 978-1-4503-0805-2