Head: Patricia STOLF
Most of the research works conducted in the SEPIA group address the issue of resource management in datacenters. In the following, we distinguish strategies which specifically target energy optimization in the datacenter (consumption and thermal effects), from works which address the improvement of virtualized datacenter consolidation (which is more general, but may also address energy saving). In a third category, we present works that focussed on the improvement of operating system support (at the level of a single server) in such environments.
Datacenter (energy) optimization
On the side of the environment of the datacenter, one research area is related to the cooling infrastructure and its optimisation. The challenge is to model the datacenter from a thermal perspective, considering the workload and application profiles, the power model and the cooling model. This model can be used to study thermal imbalances and to build strategies relying on physical machine placement or task scheduling.
A second line of works at the infrastructure level is related to power provisioning with renewable energies. Integrating renewable energies to limit the CO2 emissions of datacenters attracted lots of attention in the last decade. The investigated approach is to influence scheduling in the datacenter according to the availability of renewable energies.
One of the issue with servers in Datacenters is that their power consumption is not fully proportional to the load, i.e. some idle power is consumed even when low load is experienced. We investigate a novel approach for building data centers with heterogeneous machines carefully chosen for their performance and energy efficiency ratios (Big, Medium, Little). Then a scheduler can exploit this infrastructure by migrating applications and switching machines on or off, so that the energy consumed by the data center is fully proportional to the load.
Consolidation of virtual machines, management of Cloud infrastructures
In virtualized datacenters, many optimization techniques are targeting server consolidation, i.e. packing virtual machines (VM) on as less servers as possible in order to power-off (suspend) unused servers. Several improvements to server consolidation can then be introduced.
One vein of improvement to consolidation is to adapt the architecture of the hosted applications in order to enable further consolidation, e.g. by changing the number of VMs or the VM sizes.
Another approach is to study heuristics which help improving VM placement, according to multiple criteria.
In cloud environments, the main limitation to consolidation is the lack of memory. Memory gets saturated way before CPU. We propose to exploit remote memory in the datacenter so that this constraint can be relaxed and consolidation improved.
OS support improvement, for Cloud and HPC
A significant part of our research targeted the improvement of operating system and virtualization supports used in datacenters.
An important cause of inefficiency in today’s virtualized environments is that scheduling decisions are made at two places, the hypervisor and the guest operating systems. A way of improvement is to establish a collaboration between these two levels.
One important issue of virtualization systems is to enforce predictability of performance. The performance of a guest operating system should not be perturbed by the fact that it executes in a virtual machine (VM). However, unpredictability can be observed for many reasons : cache contention, hypervisor level contention, hardware heterogeneity. We address the above sources of unpredictability.
Another important issue in virtualization is to take into account evolutions of hardware, and especially the shift towards NUMA architectures. In NUMA architectures, the major challenge comes from the fact that the hypervisor regularly reconfigures the placement of VM resources (vCPU, pages) over the NUMA topology. However, the guest operating systems are not designed to consider NUMA topology changes at runtime. This issue can be addressed at the different levels (application level, guest operating system level, hypervisor level).
One critical issue in virtualized systems is to have accurate monitoring tools regarding the behavior of VMs. This is a condition to implement efficient resource management policies. The issue is to implement monitoring tools which are not intruvive regarding the guest operating system or regarding performance, and which provide an accurate monitoring.
skills
Members team
- Georges DA COSTAProfessor – UT3
- Daniel HAGIMONTProfessor – Toulouse INP
- Thierry MONTEILProfessor – INSA Toulouse
- Jean-Marc PIERSONProfessor – UT3
- Millian POQUETAssociate Professor – UT3
- Amal SAYAHAssociate Professor – UT3
- Patricia STOLFProfessor – UT2
- Boris TEABEAssociate Professor – Toulouse INP
- François THIÉBOLTResearch Engineer – UT3
- Jean-Baptiste DECOURCELLEPhD Student – Toulouse INP
- David DELANDEPhD Student – UT3
- Ngoc Tu DINHPhD Student – UT3
- Igor FONTANA DE NARDINPhD Student – Toulouse INP
- Jolyne GATTIntern M2 – UT3
- Leila HELALIContractual Researcher – UT3
- Armel JEATSA TOULEPIPhD Student – Toulouse INP
- Yves KONEPhD Student – Toulouse INP
- Daniel LEZCANOPhD Student – UT3
- Maël MADONPhD Student – UT3
- Rémi MEUNIERPhD Student – UT3 (joint direction TRACES)
- Romain MEUNIERPhD Student – UT3 (joint direction MELODI)
- Karim MOUSSAOUIIntern M1 – UT3
- Jérémie RODEZIntern M2 – UT3
- Manal BENAISSAAssociate PhD Student – UT3
- Damien LANDRÉAssociate PhD Student – Univ de Bourgogne
- Paul RENAUD-GOUDTeacher-researcher – UT2
publications team
Léo Grange, Patricia Stolf, Georges da Costa, Paul Renaud-Goud
Multi-Objective and Cooperative Power Planning for Datacenter With On-Site Renewable Energy Sources
IEEE Access, 2022, 10, pp.104067-104092. ⟨10.1109/ACCESS.2022.3210523⟩
Florent Dubois, Paul Renaud-Goud, Patricia Stolf
Capacitated Vehicle Routing Problem Under Deadlines: An Application to Flooding Crisis
IEEE Access, 2022, 10, pp.45629-45642. ⟨10.1109/ACCESS.2022.3170446⟩
Brice Ekane, Dinh Ngoc Tu, Boris Teabe Djomgwe, Daniel Hagimont, Noel de Palma
FlexVF: Adaptive network device services in a virtualized environment
Future Generation Computer Systems, 2022, 127, pp.14-22. ⟨10.1016/j.future.2021.08.011⟩
Karima Khadir, Nawal Guermouche, Amal Guittoum, Thierry Monteil
A genetic algorithm based approach for fluctuating QoS aware selection of IoT services
IEEE Access, 2022, 10, pp.17946-17965. ⟨10.1109/ACCESS.2022.3145853⟩
Samawel Jaballi, Salah Zrigui, Mohamed Ali Sghaier, Dhaou Berchech, Mounir Zrigui
Sentiment Analysis of Tunisian Users on Social Networks: Overcoming the Challenge of Multilingual Comments in the Tunisian Dialect
Transactions on Computational Collective Intelligence, 2022, pp.176 – 192. ⟨10.1007/978-3-031-16014-1_15⟩
Tanissia Djemai, Patricia Stolf, Thierry Monteil, Jean-Marc Pierson
Investigating Mobility-aware Strategies for IoT Services Placement in the Fog under Energy and QoS Constraints
Journal of Communications Software and Systems, 2021, 17 (2), pp.73-86. ⟨10.24138/jcomss-2020-0024⟩
Gustavo Rostirolla, Léo Grange, Minh-Thuyen Thi, Patricia Stolf, Jean-Marc Pierson, Georges da Costa, Gwilherm Baudic, Marwa Haddad, Ayham Kassab, Jean-Marc Nicod, Laurent Philippe, Veronika Sonigo, Robin Roche, Berk Celik, Stéphane Caux, Jérôme Lecuivre
A survey of challenges and solutions for the integration of renewable energy in datacenters
Renewable and Sustainable Energy Reviews, 2021, 155, pp.111787 – 111805. ⟨10.1016/j.rser.2021.111787⟩
Marwa Haddad, Georges da Costa, Jean-Marc Nicod, Marie-Cécile Péra, Jean-Marc Pierson, Veronika Rehn-Sonigo, Patricia Stolf, Christophe Varnier
Combined IT and Power Supply Infrastructure Sizing for Standalone Green Data Centers
Sustainable Computing : Informatics and Systems, 2021, pp.100505. ⟨10.1016/j.suscom.2020.100505⟩
Nesryne Mejri, Briag Dupont, Georges da Costa
Energy-aware scheduling of malleable HPC applications using a Particle Swarm optimised greedy algorithm
Sustainable Computing : Informatics and Systems, 2020, 28, pp.100447. ⟨10.1016/j.suscom.2020.100447⟩
Minh-Thuyen Thi, Jean-Marc Pierson, Georges da Costa, Patricia Stolf, Jean-Marc Nicod, Gustavo Rostirolla, Marwa Haddad
Negotiation Game for Joint IT and Energy Management in Green Datacenters
Future Generation Computer Systems, 2020, 110, pp.1116-1138. ⟨10.1016/j.future.2019.11.018⟩
Daniel Fischer, Alain Berro, Klaus Nordhausen, Anne Ruiz-Gazen
REPPlab: An R package for detecting clusters and outliers using exploratory projection pursuit
Communications in Statistics – Simulation and Computation, 2021, 50 (11), pp.3397-3419. ⟨10.1080/03610918.2019.1626880⟩
Noel De Palma, Sara Bouchenak, Fabienne Boyer, Daniel Hagimont, Sylvain Sicard, Christophe Taton
Jade : un environnement d’administration autonome
In : Technique et Science Informatiques (TSI), Hermès Science, Vol. 27, N. 9-10, pp. 1225-1252, 2008.
Georges Da Costa, Corine Marchand, Olivier Richard, Jean Marc Vincent
Éléments de caractérisation des environnements des systèmes Pair à Pair
In : Technique et Science Informatiques (TSI), Hermès Science, Special issue Atelier d’Evaluation de Performances No8, Vol. 24, pp. 311-331, 2004.
Abdelaziz M’zoughi, Daniel Litaize
Editorial
In : Technique et Sciences Informatiques, Hermès, Vol. 22, N. 6, pp. 687-688, October 2003.
Daniel Litaize, Abdelaziz M’zoughi
Architectures des ordinateurs aujourd’hui : quelques reflexions sur les challeges actuels
In : Technique et Sciences Informatiques (TSI), Hermès, Vol. 22, N. 6, pp. 811-820, 2003.
Jacques Collet, Daniel Litaize, F Caignet, F Sellaye
Quel avenir pour les interconnexions optiques intra et interpuces?
In : TRAITE EGEM série «OPTOELECTRONIQUE», Edts Hermès, Vol. 2, pp. 10-20, June 2001.
Franck Cappello, Daniel Litaize, Jean-François Mehaut, Christine Morin, Serge Petiton
Metacomputing : vers une nouvelle dimension pour le calcul haute performance Juin 2000, Hermes.
In : TSI (Technique et Science Informatiques), Hermes, Vol. 19, pp. 10-20, June 2000.
Jacques Collet, Daniel Litaize
Quel rôle pour l’optique dans l’ordinateur durant la prochaine décennie?
In : Optique et Photonique, Vol. 1, pp. 12-19, January 2000.
Christophe Guittenit, Abdelaziz M’zoughi, Daniel Litaize
Les serveurs de vidéo à la demande
In : Technique et science informatiques, Hermès, Paris, Vol. 17, N. 8, pp. 937-968, October 1998.
Editorial
In : Technique et Science Informatiques, Hermès, Paris, Vol. 16, N. 4, pp. 423-424, April 1997.
Jean-Marc Pierson, Laars Dittmann, Georges Da Costa
Special issue on selected papers from Energy Efficiency in Large-Scale Distributed Systems 2013 conference
Dans : Concurrency and Computation: Practice and Experience, Wiley, Vol. 26 N. 15, octobre 2014.
Jean-Marc Pierson, Georges Da Costa, Lars Dittmann
Introduction to special issue on Selected papers from EE-LSDS2013 Conference
Dans : Sustainable Computing: Informatics and Systems, Elsevier, Vol. 4 N. 2, juin 2014.
URL : http://www.sciencedirect.com/science/article/pii/S2210537914000249
BibTeXJean-Marc Pierson, Robert C. Hsu, Jemal H. Abawajy
Special issue on Towards merging Grid and Pervasive Computing
Dans : International Journal of Pervasive Computing and Communications, Emerald, Bradford – UK, Vol. 4 N. 4, décembre 2008.
Jean-Marc Pierson, Harald Kosch
Special Issue: Selection of Best Papers of the VLDB Data Management in Grids Workshop (VLDB DMG 2007)
Dans : Journal of Concurrency and Computation: Practice and Experience, Wiley, Vol. 20 N. 17, février 2008.
Jean-Marc Pierson, Laurent Lefèvre
Special issue on Pervasive Services, Selection of extended papers of the IEEE ICPS’2006 conference
Dans : Journal of Systems and Software, Elsevier, Vol. 80 N. 12, décembre 2007.
Jean-Marc Pierson, Lionel Brunie
Special issue on Data Management in Grids, Selection of extended papers of the VLDB DMG’06 workshop
Dans : Journal of Concurrency and Computation: Practice and Experience, Wiley, Vol. 19 N. 16, novembre 2007.
Daniel Litaize, Abdelaziz M’zoughi
Architecture des ordinateurs
Dans : Technique et Sciences Informatiques, Hermès, Vol. 22, novembre 2003.
Dominique Lavenier, Daniel Litaize
Architecture des ordinateurs
Dans : T.S.I., Hermès, Vol. 20, janvier 2001.
Jean-Paul Bahsoun, J. Fiadeiro, D. Galmiche
Proof Theory of Concurrent Object-Oriented Programming
Dans : MSCS – Mathematical Structures in Computer Science, Giuseppe Longo Cambridge University Press, Laboratoire d’Informatique(CNRS) et DMI ENS 4(, Rue d’ULM 75005 Paris France, Vol. 9, juin 1999.
Igor Fontana de Nardin, Patricia Stolf, Stéphane Caux
Analyzing Power Decisions in Data Center Powered by Renewable Sources
34th International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD 2022), IEEE; Inria Bordeaux – Sud-Ouest; Université de Bordeaux; Bordeaux INP, Nov 2022, Bordeaux, France. pp.1-10, ⟨10.1109/SBAC-PAD55451.2022.00041⟩
Manal BENAISSA, Georges da Costa, Jean-Marc Nicod
Standalone Data-Center Sizing Combating the Over-Provisioning of the IT and Electrical Parts
Workshop on Cloud Computing (WCC 2022) @ SBAC-PADW 2022, Nov 2022, Bordeaux, France. pp.1-8
Manal BENAISSA, Georges da Costa, Jean-Marc Nicod
Standalone Data-Center Sizing Combating the Over-Provisioning of the IT and Electrical Parts
International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD 2022), INRIA Bordeaux – Sud-Ouest; Université de Bordeaux; Bordeaux INP, Nov 2022, Bordeaux, France. pp.1-8
Manal BENAISSA, Georges da Costa, Jean-Marc Nicod
Standalone Data-Center Sizing Combating the Over-Provisioning of the IT and Electrical Parts
34th International Symposium on Computer Architecture and High Performance Computing Workshops (SBAC-PADW 2022), Inria Bordeaux – Sud-Ouest; IEEE, Nov 2022, Bordeaux, France. pp.57-62, ⟨10.1109/SBAC-PADW56527.2022.00019⟩
Igor Fontana de Nardin, Patricia Stolf, Stéphane Caux
Evaluation of Heuristics to Manage a Data Center Under Power Constraints
13th International Green and Sustainable Computing Conference (IGSC 2022), Oct 2022, Pullman, United States. ⟨10.1109/IGSC55832.2022.9969362⟩
Julie Bu Daher, Tom Huygue, Nathalie Jane Hernandez, Patricia Stolf
Inferring New Information from a Knowledge Graph in Crisis Management: A Case Study
14th International Conference on Knowledge Engineering and Ontology Development (KEOD 2022), Oct 2022, Valletta, Malta. pp.43-54, ⟨10.5220/0011511200003335⟩
Igor Fontana de Nardin, Patricia Stolf, Stéphane Caux
Mixing Offline and Online Electrical Decisions in Data Centers Powered by Renewable Sources
48th Annual Conference of the IEEE Industrial Electronics Society (IECON 2022), IEEE Industrial Electronics Society (IES), Oct 2022, Brussels, Belgium. pp.1-6, ⟨10.1109/IECON49645.2022.9968999⟩
Maël Madon, Georges da Costa, Jean-Marc Pierson
Characterization of Different User Behaviors for Demand Response in Data Centers
28th International Conference on Parallel and Distributed Computing : Parallel Processing (Euro-Par 2022), Aug 2022, Glasgow, United Kingdom. pp.53-68, ⟨10.1007/978-3-031-12597-3_4⟩
Morgan Séguéla, Riad Mokadem, Jean-Marc Pierson
Dynamic Energy and Expenditure Aware Data Replication Strategy
IEEE International Conference on Cloud Computing Technical Program (CLOUD 2022), IEEE, Jul 2022, Barcelona, Spain
Manal BENAISSA, Georges da Costa, Jean-Marc Nicod
Dimensionnement d’un centre de données autonome alimenté 100% par des énergies renouvelables
Conférence francophone d’informatique en Parallélisme, Architecture et Système (COMPAS 2022), MIS : Laboratoire Modélisation, Informatique et Système (Université de Picardie Jules Verne), Jul 2022, Amiens, France. paper 24
Morgan Seguela, Riad Mokadem, Jean-Marc Pierson
Étude des Stratégies de réplication de données prenant en compte la consommation énergétique vs. le profit économique dans les systèmes Cloud
Conférence d’informatique en Parallélisme, Architecture et Système (ComPAS 2019), Jun 2019, Anglet, France. pp.1-8
Mathieu Bacou, Grégoire Todeschi, Alain Tchana, Daniel Hagimont, Baptiste Lepers, Willy Zwaenepoel
Drowsy-DC: Data center power management system
33rd IEEE International Parallel & Distributed Processing Symposium (IPDPS), May 2019, Rio de Janeiro, Brazil. pp.825-834, ⟨10.1109/IPDPS.2019.00091⟩
Leandro Fontoura Cupertino, Georges Da Costa, Amal Sayah, Jean-Marc Pierson
Valgreen: an Application’s Energy Profiler
In : International Conference on Soft Computing and Software Engineering (SCSE’13), San Francisco, 01/03/13-03/03/13, Mukesh Singhal, Y. Sun, M. Beldjehem, Daniel Breaz, Ezzat Kirmani (Eds.).
PapaBench : un benchmark temps réel gratuit
In : Colloque des doctorants de l’école doctorale EDIT, Toulouse, 22/05/06-23/05/06.
Ivan Frain, Abdelaziz M’zoughi
Virtualisation du stockage pour les grilles informatiques
In : Journées Nationales RNTL, Rennes, France, 04/10/04-05/10/04.
La programmation impérative : spécification et vérification
In : Université d’été pour former le cadre enseignant des universités Libanaise et Syriennes, Damas- Syrie, 28/07/03-01/08/03.
Les paradigmes de la programmation
In : Université d’été pour former le cadre enseignant de l’Université Libanaise, Beyrouth- Liban, 05/07/01-25/07/01.
Mécanismes de protection associés à la gestion des hiérarchies mémoires : panorama
In : Ecole thématique du CNRS sur la conception d’architectures de systèmes informatiques dédiés à des applications spécifiques de type ‘enfoui’, Seix, France, 20/11/00-23/11/00.
URL : http://www.ens-lyon.fr/LIP/Ecoles_Archi/litaize.pdf
BibTeXWissam Hlayhel, Daniel Litaize, Jacques Collet, Christine Rochange, David Parello
Shared Address Bus in SMP Multiprocessors
In : 9th Workshop on Scalable Shared-Memory Multiprocessors, Vancouver, .
Dominique Houzet, Abdelaziz M’zoughi
Computer Architecture Development Courses in Toulouse Universities
In : 5th Annual Workshop on Computer Architecture Education (WCAE-5) & (HPCA-5), Orlondo, Floride, 09/01/99-13/01/99.
Multilevel proof system for concurrent object-oriented programs with TLA
In : Journées Formalisation des Objets Concurrents, Université de Lisboa, Portugal, .
Jean-Paul Bahsoun, Christine Servières
Multilevel proof system for concurrent object-oriented programs
In : WS4- ECOOP’96, Linz-Austria, .
Ariel Oleksiak, Laurent Lefèvre, Pedro Alonso, Georges da Costa, Vincenzo de Maio, Neki Frasheri, Victor Garcia, Joel Guerrero, Sébastien Lafond, Alexey Lastovetsky, Ravi Reddy Manumachu, Benson Muite, Anne-Cécile Orgerie, Wojciech Piatek, Jean-Marc Pierson, Radu Prodan, Patricia Stolf, Enida Sheme, Sébastien Varrette
Energy aware ultrascale systems
Ultrascale Computing Systems, Institution of Engineering and Technology, pp.127-188, 2019, ⟨10.1049/PBPC024E_ch⟩
Georges Da Costa, Alexey L. Lastovetsky, Jorge G. Barbosa, Juan Carlos Diaz Martin, Juan-Luis Garcia Zapata, Matthias Janetschek, Emmanuel Jeannot, João Leitão, Ravi Reddy Manumachu, Radu Prodan, Juan A. Rico-Gallego, Peter Van Roy, Ali Shoker, Albert van Der Linde
Programming models and runtimes
Jesus Carretero; Emmanuel Jeannot; Albert Zomaya. Ultrascale Computing Systems, 2, Institution of Engineering and Technology, pp.9-63, 2019, 978-1785618338. ⟨10.1049/PBPC024E_ch2⟩
Hongyang Sun, Anne Benoit, Jean-Marc Pierson
Special issue on Resilience and Energy-aware Techniques for High-Performance Computing (RE-HPC)
Elsevier, 19, pp.1-350, 2018, Sustainable Computing: Informatics and Systems, ⟨10.1016/j.suscom.2018.07.012⟩
Laurent Lefèvre, Jean-Marc Pierson
Introduction to special issue on sustainable computing for ultrascale computing
Lefèvre, Laurent and Pierson, Jean-Marc. Elsevier, 17 (Special issue), pp.25-26, 2018, Sustainable Computing: Informatics and Systems, ⟨10.1016/j.suscom.2018.02.002⟩
Large-Scale Distributed Systems and Energy Efficiency: A holistic view, Wiley, Parallel and Distributed Computing Series, 1, May 2015.
URL : http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1118864638.html
BibTeXJacques Jorda, Abdelaziz M’zoughi
Mini Manuel d’architecture de l’ordinateur, DUNOD, January 2012.
PROCESSEURS ARM Architecture et langage d’assemblage, DUNOD, September 2010.
Jean-Paul Bahsoun, A. Yonezawa, Takanobu Baba, Jean-Pierre Briot
Object-Oriented Parallel and Distributed Programming, HERMES, HERMES Science Publications 8, quai du Marché-Neuf 75004 Paris, Science, January 2000.
Jean-Paul Bahsoun, Pascal Farès, Corinne Servières
Multilevel proof system for concurrent object-oriented systems
, HERMES Science publications, France, December 2000.
Micha Vor Dem Berge, Jochen Buchholz, Leandro Fontoura Cupertino, Georges Da Costa, Andrew Donoghue, Gallizo Georgina, Mateusz Jarus, Lara Lorez, Ariel Oleksiak, Enric Pages, Wojciech PiąTek, Jean-Marc Pierson, Tomasz Piontek, Daniel Rathgeb, Jaume Salom, Laura Siso, Eugen Volk, Uwe Wössner, Thomas Zilio
CoolEmAll: Models and Tools for Planning and Operating Energy Efficient Data Centres
In : Handbook on Data Centers. Samee U. Khan, Albert Y. Zomaya (Eds.) , Springer, pp. 191-245, March 2015.
Abstract URL : http://dx.doi.org/10.1007/978-1-4939-2092-1_6
BibTeXChristina Herzog, Laurent Lefèvre, Jean-Marc Pierson
Actors for Innovation in Green IT
In : ICT Innovations for Sustainability. Lorenz Hilty, Bernard Aebischer (Eds.) , Springer, 3, pp. 49-67, Vol. 310, Advances in Intelligent Systems and Computing, January 2015.
Abstract URL : http://link.springer.com/chapter/10.1007/978-3-319-09228-7_3
BibTeXChristina Herzog, Jean-Marc Pierson, Laurent Lefèvre
Towards sustainability for large scale computing systems: Environmental, Economic and Standardization aspects
In : Large-Scale Distributed Systems and Energy Efficiency: A holistic view. Jean-Marc Pierson (Eds.) , John Wiley and Sons, 10, pp. 287-308, May 2015.
URL : http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1118864638%2CsubjectCd-CSG1.html
BibTeXRobert Basmadjian, Pascal Bouvry, Georges Da Costa, László Gyarmati, Dzmitry Kliazovich, Sébastien Lafond, Laurent Lefèvre, Herman De Meer, Jean-Marc Pierson, Pries Rastin, Jordi Torres, Tuan Trin, Samee Ullah Khan
Green Data Centers
In : Large-Scale Distributed Systems and Energy Efficiency: A holistic view. Jean-Marc Pierson (Eds.) , John Wiley and Sons, 6, pp. 159-196, May 2015.
URL : http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1118864638%2CsubjectCd-CSG1.html
BibTeXPragati Agrawal, Damien Borgetto, Carmela Comito, Georges Da Costa, Jean-Marc Pierson, Payal Prakash, Shrisha Rao, Domenico Talia, Cheikhou Thiam, Paolo Trufio
Scheduling and Resource Allocation
In : Large-Scale Distributed Systems and Energy Efficiency: A holistic view. Jean-Marc Pierson (Eds.) , John Wiley and Sons, 8, pp. 225-262, May 2015.
URL : http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1118864638%2CsubjectCd-CSG1.html
BibTeX
Stratégie de réplication de données prenant en compte la consommation énergétique et la dépense dans les systèmes à grandes échelles
Sciences de l’information et de la communication. Université Paul Sabatier – Toulouse III, 2022. Français. ⟨NNT : 2022TOU30126⟩
The vehicle routing problem for flash floods relief operations
Modeling and Simulation. Université Paul Sabatier – Toulouse III, 2022. English. ⟨NNT : 2022TOU30074⟩
Placement optimisé de services dans les architectures fog computing et internet of things sous contraintes d’énergie, de QoS et de mobilité
Réseaux et télécommunications [cs.NI]. Université Paul Sabatier – Toulouse III, 2021. Français. ⟨NNT : 2021TOU30019⟩
Performance et gestion de ressources dans un cloud multi-virtualisé
Calcul parallèle, distribué et partagé [cs.DC]. Institut National Polytechnique de Toulouse, 2020. Français. ⟨NNT : ⟩
Scheduling in cloud data center powered by renewable energy only with mixed phases-based workload
Databases [cs.DB]. Université Paul Sabatier – Toulouse III, 2019. English. ⟨NNT : 2019TOU30160⟩
Datacenter management for on-site intermittent and uncertain renewable energy sources
Systems and Control [cs.SY]. Université Paul Sabatier – Toulouse III, 2019. English. ⟨NNT : 2019TOU30176⟩
Memory management in a virtual environment
Networking and Internet Architecture [cs.NI]. Université Paul Sabatier – Toulouse III, 2019. English. ⟨NNT : 2019TOU30089⟩
Energy-efficient resource provisioning for cloud databases
Networking and Internet Architecture [cs.NI]. Université Paul Sabatier – Toulouse III, 2019. English. ⟨NNT : 2019TOU30065⟩
Self-Adaptive Bandwidth Control for Balanced QoS and Energy Aware Optimization in Wireless Sensor Network
Networking and Internet Architecture [cs.NI]. INSA de Toulouse, 2017. English. ⟨NNT : 2017ISAT0034⟩
Sécurité et Disponibilité des Données Stockées dans les Nuages
Master’s Thesis, Université Paul Sabatier, February 2016.
URL : http://www.irit.fr/publis/SEPIA/relaza-these.pdf
BibTeXEnergy management in content distribution network servers
Master’s Thesis, Université Paul Sabatier, January 2015.
Évaluation et optimisation de performance énergétique des centres de calcul
HDR, Université de Toulouse, 2015.
Contribution to the modeling of technology transfer in Green IT with Multi-Agent System
Master’s Thesis, Université Paul Sabatier, November 2015.
Modeling the power consumption of computing systems and applications through Machine Learning techniques
Master’s Thesis, Université Paul Sabatier, July 2015.
La gestion des ressources pour des infrastructures vertes par la recon¿guration
HDR, Université Paul Sabatier, November 2015.
URL : http://www.irit.fr/~Patricia.Stolf/hdr_stolf.pdf
BibTeXModélisation formelle de systèmes dynamiques autonomes : graphe, réécriture et grammaire
Master’s Thesis, Université Paul Sabatier, June 2015.
Gestion de ressources de façon “éco-énergétique” dans un système virtualisé : application à l’ordonnanceur de marchines virtuelles
Master’s Thesis, Institut National Polytechnique de Toulouse, June 2014.
Abstract URL : http://ethesis.inp-toulouse.fr/archive/00002803/
BibTeXOrdonnancement sous contraintes de qualité de service dans les Clouds
Master’s Thesis, Université de Toulouse, December 2014.
Anti Load-Balancing for Energy-Aware Distributed Scheduling of Virtual Machines.
Master’s Thesis, Université de Toulouse, July 2014.
Milagros Rey Porto, Silvia Sanjoaquín Vives, Aleix Fonellosa Caro, Marta Chinnici, Andrea Quintiliani, Ariel Oleksiak, Georges Da Costa, Eduard Oró, Davide Nardi Cesarini, Philip Inglesant, Mario Macias, Jaume Salom, Vassilios Tsachouridis, Ton Engbersen, Tomas Fernandez Buckley, John Bynum, Vojta Zavrel, Robert Birke, Massey Elizabeth, Massimo Bertoncini, Arnone Diego, Terpsi Velivasaki, Ioan Salomie, Tudor Cioara, Fabrice Roudet, Nicolas Samman, Artemis Voulkidis
Data Centres Sustainability Cluster Activities Task 3
Research report, 3, European Commission, October 2014.
URL : https://ec.europa.eu/digital-agenda/en/news/cluster-fp7-projects-proposes-new-environmental-efficiency-metrics-data-centres
BibTeXBFT Selection
Research report, IRIT/RT–2013-13–FR, IRIT, May 2013.
Georges Da Costa, Davide Careglio, Ronen I Kat, Avi Mendelson, Jean-Marc Pierson, Yiannakis Sazeides
Hardware leverages for energy reduction in large scale distributed systems
Research report, IRIT/RT2010-2FR, IRIT, 2012.
URL : http://www.irit.fr/~Georges.Da-Costa/brochure.pdf
BibTeXAli Shoker, Maysam Yabandeh, Rachid Guerraoui, Jean-Paul Bahsoun
Obfuscated BFT
Research report, IRIT/RT–2012-8–FR, IRIT, May 2012.
BFT for Three Decades, Yet not Enough
Research report, IRIT/RR–2012-7–FR, IRIT, November 2009.
Helmut Hlavacs, Georges Da Costa, Jean-Marc Pierson
Energy Consumption of Residential and Professional Switches
Research report, IRIT//RR2009-7FR, IRIT, March 2009.
Abdelaziz M’zoughi, Christophe Guittenit
Brevet International : Procédé et dispositif de répartition d’objets dans un groupe hétérogène de dispositifs de stockage de données
Research report, PCT n°02/04351, IRIT, December 2003.
Abdelaziz M’zoughi, Christophe Guittenit
Brevet National : Procédé et dispositif de répartition d’objets dans un groupe hétérogène de dispositifs de stockage de données
Research report, 01/16204, IRIT, December 2001.
Daniel Litaize, Jean-Claude Salinier, Abdelaziz M’zoughi, Fatima-Zahra Elkhlifi, Mustapha Lalam, Pascal Sainrat
Shared memory multiprocessor system using a set of serial links as processors-memory switch
Research report, US06112287, IRIT, August 2000.
Christophe Guittenit, Abdelaziz M’zoughi
Conception et évaluation d’un serveur de vidéo fondé sur un anneau de PC
Research report, 98/05-R, IRIT, April 1998.
Contracts team
| Acronyme | Titre | Resp. sc | Début – fin | |
|---|---|---|---|---|
| ENERGUMEN |  | Optimiser l’énergie des plate-formes de calcul à large échelle | Georges DA COSTA | 2018 – 2023 |
| DATAZERO2 | | Datacenter avec Zero Emission de CO2 : un pas plus loin | Jean-Marc PIERSON | 2020 – 2024 |
| PicNic | | Transfert de grands volumes de données entre datacenters | Daniel HAGIMONT | 2020 – 2024 |
| Walkin | | Mise à jour des hyperviseurs dans les data centers de cloud | Boris TEABE | 2020 – 2023 |
| DELIGHT | | aDvancing fEderated LearnIng while reducinG tHe carbon fooTprint | Georges DA COSTA | 2022 – 2026 |
| SCALEVISOR [Contract completed] | | Scalevisor: un hyperviseur pour rack désagrégé | Daniel HAGIMONT | 2018 – 2021 |
| i-Nondations [Contract completed] | | i-Nondations : Gestion multi-vues des crues rapides | Patricia STOLF | 2017 – 2022 |
| DATAZERO [Contract completed] | | Datacenters robustes utilisant de l’énergie renouvelable | Jean-Marc PIERSON | 2015 – 2020 |
| Ctrl-Green [Contract completed] |  | Administration autonome de Green Data Centers | Daniel HAGIMONT | 2012 – 2014 |
| SOP [Contract completed] | Penser service global pour les Ordinateurs Personnels | Patricia STOLF | 2011 – 2015 |
| Acronyme | Titre | Resp. sc | Début – fin | |
|---|---|---|---|---|
| CoolEmAll [Contract completed] | | Platform for optimising the design and operation of modular configurable IT infrastructures and facilities with resource-efficient cooling | Jean-Marc PIERSON | 2011 – 2014 |
| Acronyme | Titre | Resp. sc | Début – fin | |
|---|---|---|---|---|
| PicNic | Allocation Doctorale : Transfert de grands volumes de données biologiques entre datacenters | Daniel HAGIMONT | 2020 – 2025 | |
| DOCILE | Allocation Doctorale : DOrsales de Communication éphémères pour l’étude des Interactions et la géoLocalisation des Espèces | Georges DA COSTA | 2022 – 2025 | |
| Blablamen [Contract completed] | BlaBlaMem : un service de co-voiturage mémoire dans un datacenter | Daniel HAGIMONT | 2017 – 2019 |