1086 articles – 5317 Notices  [english version]
HAL : hal-00672046, version 3

Voir la fiche concise  BibTeX,EndNote,...
SpeQuloS: A QoS Service for BoT Applications Using Best Effort Distributed Computing Infrastructures.
Delamare S., Fedak G., Kondo D., Lodygensky O.
Rapports (2012) - http://hal.inria.fr/hal-00672046
Versions disponibles
Informatique/Calcul parallèle, distribué et partagé
SpeQuloS: A QoS Service for BoT Applications Using Best Effort Distributed Computing Infrastructures.
Simon Delamare ()1, Gilles Fedak1, Derrick Kondo2, 3, Oleg Lodygensky2, 4, 5
1 :  LIP Lyon / Inria Grenoble Rhône-Alpes - AVALON
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
2 :  LIP - Laboratoire de l'Informatique du Parallélisme
PRES Université de Lyon – CNRS : UMR5668 – INRIA – École Normale Supérieure (ENS) - Lyon – Université Claude Bernard - Lyon I (UCBL)
46 Allée d'Italie 69364 LYON CEDEX 07
3 :  INRIA Grenoble Rhône-Alpes / LIG laboratoire d'Informatique de Grenoble - MESCAL
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
4 :  LAL - Laboratoire de l'Accélérateur Linéaire
CNRS : UMR8607 – IN2P3 – Université Paris XI - Paris Sud
Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex
5 :  LRI - Laboratoire de Recherche en Informatique
CNRS : UMR8623 – Université Paris Sud
LRI - Bâtiments 650-660 Université Paris-Sud 91405 Orsay Cedex
Exploitation of Best Effort Distributed Computing Infrastructures (BE-DCIs) allow operators to maximize the utilization of the infrastructures, and users to access the unused 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. Profiling 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 report, we present the SpeQuloS service which enhances 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 fulfill 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.

Rapport de recherche

Liste des fichiers attachés à ce document :
RR-7890.pdf(1 MB)