SEPIA Team

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

Distributed and autonomous systems
Energy management
Parallel optimization
Cloud and data centers
Virtualized operating systems

Members team

Permanent members
Non-permanent members

publications team

International journals articles
  • Mar Pérez-Sanagustin, Diego Sapunar ‐ Opazo, Ronald Pérez‐Álvarez, Isabel Hilliger, Anis Bey, Jorge Maldonado ‐ Mahauad, Jorge Baier

    A MOOC‐based flipped experience: Scaffolding SRL strategies improves learners’ time management and engagement

    Computer Applications in Engineering Education, Wiley, 2021, 29 (4), pp.750-768. ⟨10.1002/cae.22337⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03276977

  • 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, Croatian Communications and Information Society, 2021, 17 (2), pp.73-86. ⟨10.24138/jcomss-2020-0024⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03220224

  • 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, Elsevier, 2021, pp.100505. ⟨10.1016/j.suscom.2020.100505⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03110359

  • Luis Ramírez-Donoso, Mar Pérez-Sanagustin, Andrés Neyem, Carlos Alario-Hoyos, Isabel Hilliger, Felipe Rojos

    Fostering the use of online learning resources: results of using a mobile collaboration tool based on gamification in a blended course

    Interactive Learning Environments, Taylor & Francis (Routledge), 2021, pp.1-15. ⟨10.1080/10494820.2020.1855202⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03276982

  • 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, Elsevier, 2020, 28, pp.100447. ⟨10.1016/j.suscom.2020.100447⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02964970

  • Ronald Antonio Perez-Alvarez, Jorge Maldonado-Mahauad, Kshitij Sharma, Diego Sapunar-Opazo, Mar Pérez-Sanagustin

    Characterizing Learners’ Engagement in MOOCs: An Observational Case Study Using the NoteMyProgress Tool for Supporting Self-Regulation

    IEEE Transactions on Learning Technologies, Institute of Electrical and Electronics Engineers, 2020, 13 (4), pp.676-688. ⟨10.1109/TLT.2020.3003220⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03276974

  • 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, Elsevier, 2020, 110, pp.1116-1138. ⟨10.1016/j.future.2019.11.018⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02941028

  • Isabel Hilliger, Margarita Ortiz‐rojas, Paola Pesántez‐cabrera, Eliana Scheihing, Yi‐shan Tsai, Pedro Muñoz‐merino, Tom Broos, Alexander Whitelock‐wainwright, Dragan Gašević, Mar Pérez-Sanagustin

    Towards learning analytics adoption: A mixed methods study of data‐related practices and policies in Latin American universities

    British Journal of Educational Technology, Wiley, 2020, 51 (4), pp.915-937. ⟨10.1111/bjet.12933⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03276953

  • Gerti Pishtari, María Rodríguez‐triana, Edna Sarmiento‐márquez, Mar Pérez-Sanagustin, Adolfo Ruiz‐calleja, Patricia Santos, Luis P. Prieto, Sergio Serrano-Iglesias, Terje Väljataga

    Learning design and learning analytics in mobile and ubiquitous learning: A systematic review

    British Journal of Educational Technology, Wiley, 2020, 51 (4), pp.1078-1100. ⟨10.1111/bjet.12944⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03276959

  • Tom Broos, Isabel Hilliger, Mar Pérez-Sanagustin, Nyi‐nyi Htun, Martijn Millecamp, Paola Pesántez-Cabrera, Lizandro Solano‐quinde, Lorena Siguenza‐guzman, Miguel Zuñiga‐prieto, Katrien Verbert, Tinne de Laet

    Coordinating learning analytics policymaking and implementation at scale

    British Journal of Educational Technology, Wiley, 2020, 51 (4), pp.938-954. ⟨10.1111/bjet.12934⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03276957

  • National journals articles
    Special issues of journal
    International conferences articles
  • Djob Mvondo, Mathieu Bacou, Kevin Nguetchouang, Stéphane Pouget, Josiane Kouam, Renaud Lachaize, Jinho Hwang, Tim Wood, Daniel Hagimont, Noël de Palma, Bernabé Batchakui, Alain Tchana

    OFC: an opportunistic caching system for FaaS platforms

    EUROSYS 2021 – 16th European Conference on Computer Systems, Apr 2021, Edinburgh (online), United Kingdom. pp.228-244, ⟨10.1145/3447786.3456239⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03211416

  • Dinh Ngoc Tu, Boris Teabe Djomgwe, Alain Tchana, Gilles Muller, Daniel Hagimont

    Mitigating vulnerability windows with hypervisor transplant

    EuroSys 2021 – European Conference on Computer Systems, Apr 2021, Edinburgh / Virtual, United Kingdom. pp.1-14, ⟨10.1145/3447786.3456235⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03183856

  • Boris Teabe Djomgwe, Peterson Yuhala, Alain Tchana, Fabien Hermenier, Daniel Hagimont, Gilles Muller

    (No)Compromis: Paging Virtualization Is Not a Fatality

    VEE 2021 – 17th ACM SIGPLAN/SIGOPS International Conference on Virtual Execution Environments, Apr 2021, Détroit, Michigan / Virtual, United States. pp.1-12

    Accès: https://hal.archives-ouvertes.fr/hal-03183858

  • Minh-Thuyen Thi, Jean-Marc Pierson, Georges da Costa

    Game-Based Negotiation between Power Demand and Supply in Green Datacenters

    18th International Symposium on Parallel and Distributed Processing with Applications (ISPA 2020), Dec 2020, Exeter (virtual), United Kingdom

    Accès: https://hal.archives-ouvertes.fr/hal-03101593

  • Maël Madon, Jean-Marc Pierson

    Integrating Pre-Cooling of Data Center operated with Renewable Energies

    IEEE International Conference on Green Computing and Communications (GreenCom 2020), Nov 2020, Rhodes Island, Greece

    Accès: https://hal.archives-ouvertes.fr/hal-02970488

  • Tanissia Djemai, Patricia Stolf, Thierry Monteil, Jean-Marc Pierson

    Mobility Support for Energy and QoS aware IoT Services Placement in the Fog

    28th International Conference on Software, Telecommunications and Computer Networks (SoftCOM 2020), FESB : Faculté d’électronique, de génie mécanique et d’architecture navale de l’université de Split; Croatian Communications and Information Society (CCIS); Technically co-sponsored by the IEEE Communications Society, Sep 2020, Hvar, Croatia. pp.1-7, ⟨10.23919/SoftCOM50211.2020.9238236⟩

    Accès: https://hal.archives-ouvertes.fr/hal-03032764

  • Yuxin Ren, Guyue Liu, Vlad-Tiberiu Nitu, Wenyuan Shao, Riley Kennedy, Gabriel Parmer, Timothy Wood, Alain Tchana

    Fine-Grained Isolation for Scalable, Dynamic, Multi-tenant Edge Clouds

    ATC 2020 – USENIX Annual Technical Conference, Jul 2020, Virtual, France

    Accès: https://hal.inria.fr/hal-03162363

  • Djob Mvondo, Alain Tchana, Renaud Lachaize, Daniel Hagimont, Noel de Palma

    Fine-Grained Fault Tolerance For Resilient pVM-based Virtual Machine Monitors

    DSN 2020 – 50th Annual IEEE/IFIP International Conference on Dependable Systems and Networks, Jun 2020, Valencia, France. pp.197-208, ⟨10.1109/DSN48063.2020.00037⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02959252

  • Florent Dubois, Paul Renaud-Goud, Patricia Stolf

    Capacitated Vehicle Routing Problem under Deadlines

    International Conference on Information and Communication Technologies for Disaster Management (ICT-DM 2019), Dec 2019, Paris, France. pp.1-8, ⟨10.1109/ICT-DM47966.2019.9033000⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02942308

  • Morgan Seguela, Riad Mokadem, Jean-Marc Pierson

    Comparing energy-aware vs. cost-aware data replication strategy

    10th International Green and Sustainable Computing Conference (IGSC 2019), Oct 2019, Alexandria, United States. pp.1-8

    Accès: https://hal.archives-ouvertes.fr/hal-02950735

  • National conferences articles
  • 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

    Accès: https://hal.archives-ouvertes.fr/hal-02887496

  • 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⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02891652

  • Conferences articles without published proceedings
    Books
  • 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⟩

    Accès: https://hal.inria.fr/hal-02163289

  • 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⟩

    Accès: https://hal.inria.fr/hal-02403121

  • 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⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02982561

  • 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⟩

    Accès: https://hal.archives-ouvertes.fr/hal-02982965

  • Books Books edition Books parts
    Thesis and HDR
  • Tanissia Djemai

    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⟩

    Accès: https://tel.archives-ouvertes.fr/tel-03280438

  • Mathieu Bacou

    Performance et gestion de ressources dans un cloud multi-virtualisé

    Calcul parallèle, distribué et partagé [cs.DC]. Institut National Polytechnique de Toulouse, 2020. Français

    Accès: https://hal.archives-ouvertes.fr/tel-03139720

  • Gustavo Rostirolla

    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⟩

    Accès: https://tel.archives-ouvertes.fr/tel-02628518

  • Léo Grange

    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⟩

    Accès: https://tel.archives-ouvertes.fr/tel-02500692

  • Aram Kocharyan

    Memory management in a virtual environment

    Networking and Internet Architecture [cs.NI]. Université Paul Sabatier – Toulouse III, 2019. English. ⟨NNT : 2019TOU30089⟩

    Accès: https://tel.archives-ouvertes.fr/tel-02880142

  • Chaopeng Guo

    Energy-efficient resource provisioning for cloud databases

    Networking and Internet Architecture [cs.NI]. Université Paul Sabatier – Toulouse III, 2019. English. ⟨NNT : 2019TOU30065⟩

    Accès: https://tel.archives-ouvertes.fr/tel-02896451

  • Zongyi Liu

    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⟩

    Accès: https://tel.archives-ouvertes.fr/tel-02094515

  • Thesis and HDR
    Reports
  • Morgan Séguéla, Riad Mokadem, Jean-Marc Pierson

    Energy and Expenditure Aware Data Replication Strategy

    [Research Report] IRIT/RR–2021–07–FR, Institut de Recherche en Informatique de Toulouse (IRIT), Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9. 2021

    Accès: https://hal.archives-ouvertes.fr/hal-03378928

  • Patricia Stolf, Julian Berthet, Christelle Bosc, Pauline Bremond, Arnaud Ceyte, Victor Champonnois, Anne-Laure Collard, Florent Dubois, Georges da Costa, Katrin Erdlenbruch, Didier Felts, Rémy Gasset, Frédéric Grelot, Christophe Héral, Benjamin Piccinini, Jean-Marc Pierson, Amal Sayah

    Towards Flash Floods Management Using Temporal Loops

    [Research Report] IRIT/RR–2021–06–FR, IRIT – Institut de Recherche en Informatique de Toulouse. 2021

    Accès: https://hal.archives-ouvertes.fr/hal-03327977

  • Aras Atalar, Paul Renaud-Goud, Philippas Tsigas

    Lock-Free Search Data Structures: Throughput Modelling with Poisson Processes

    [Research Report] IRIT-Institut de recherche en informatique de Toulouse. 2018

    Accès: https://hal.archives-ouvertes.fr/hal-01790514

  • Leonel Sousa, Peter Kropf, Pierre Kuonene, Radu Prodan, Tuan Trinh, Jesus Carretero, Alexey Lastovetsky, Georges da Costa, Pascal Bouvry, A Bilas, Toni Cortes, Ariel Oleksiak, Laurent Lefevre, Gudula Rünger, Svetozar Margenov

    A Roadmap for Research in Sustainable Ultrascale Systems

    [Research Report] University Carlos III of Madrid. 2017

    Accès: https://hal.archives-ouvertes.fr/hal-03120278

  • Reports

    Contracts team

    AcronymeTitreResp. scDébut – fin
    i-Nondations anr i-Nondations : Gestion multi-vues des crues rapides Patricia STOLF
    2017 – 2022
    ENERGUMEN anr Optimiser l’énergie des plate-formes de calcul à large échelle Georges DA COSTA
    2018 – 2023
    DATAZERO2 anr DATAcenter avec Zero Emission de CO2 : un pas plus loin Jean-Marc PIERSON
    2019 – 2023
    PicNic anr Transfert de grands volumes de données entre datacenters Daniel HAGIMONT
    2020 – 2024
    Walkin anr Mise à jour des hyperviseurs dans les data centers de cloud Boris TEABE
    2020 – 2023
    SCALEVISOR
    [Contract completed]
    anr Scalevisor: un hyperviseur pour rack désagrégé Daniel HAGIMONT
    2018 – 2021
    DATAZERO
    [Contract completed]
    anr Datacenters robustes utilisant de l’énergie renouvelable Jean-Marc PIERSON
    2015 – 2020
    Ctrl-Green
    [Contract completed]
    autre Administration autonome de Green Data Centers Daniel HAGIMONT
    2012 – 2014
    SOP
    [Contract completed]
    Penser service global pour les Ordinateurs Personnels Patricia STOLF
    2011 – 2015
    SelfXL
    [Contract completed]
    autre Administration autonome pour systèmes complexes de grande taille Daniel HAGIMONT
    2008 – 2011
    AcronymeTitreResp. scDébut – fin
    CoolEmAll
    [Contract completed]
    autre Platform for optimising the design and operation of modular configurable IT infrastructures and facilities with resource-efficient cooling Jean-Marc PIERSON
    2011 – 2014
    PIREGRID
    [Contract completed]
    autre Renforcer l’intégration transfrontalière en valorisant les complémentarités sur le plan des activités économiques, de l’innovation et du capital humain Jean-Marc PIERSON
    2009 – 2012
    AcronymeTitreResp. scDébut – fin
    PicNic Transfert de grands volumes de données biologiques entre datacenters Daniel HAGIMONT
    2020 – 2025
    Blablamen
    [Contract completed]
    BlaBlaMem : un service de co-voiturage mémoire dans un datacenter Daniel HAGIMONT
    2017 – 2019
    Wednesday 3 February 2021, 9h00
    Optimized placement of services in Fog Computing and Internet of Things architectures under energy, QoS and mobility constraints
    Tanissia DJEMAI – Team SEPIA, IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #these
    Monday 25 November 2019, 14h00
    Scheduling in Cloud Data Center Powered by Renewable Energy Only With Mixed Phases-Based Workload
    Gustavo ROSTIROLLA – Team SEPIA, IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #these
    Thursday 3 October 2019, 14h00
    Gestion de centre de données avec sources d’énergies renouvelables intermittentes et incertaines
    Léo GRANGE – Team SEPIA, IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #these
    Friday 14 June 2019, 14h00
    Energy-efficient Resource Provisioning for Cloud Databases
    Chaopeng GUO – Team SEPIA, IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #these
    Friday 28 September 2018, 14h30
    Améliorer l’efficacité énergétique des datacenters virtualisés
    Vlad NITU – Team SEPIA – IRIT INP-ENSEEIHT, Salle des thèses
    #these
    Monday 20 November 2017, 14h00
    Towards a better use of renewable energies: application to scientific buildings
    Inès DE COURCHELLE – Team SEPIA – IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #these
    Thursday 12 October 2017, 14h00
    Performance et qualité de service de l’ordonnanceur dans un environnement virtualisé
    Boris DJOMGWE TEABE – Team SEPIA – IRIT INP-ENSEEIHT, salle C002
    #these
    Tuesday 4 July 2017, 14h00
    Self-Adaptive Bandwidth Control for Balanced QoS and Energy Aware Optimization in Wireless Sensor Network
    Zong Yi LIU – Team SEPIA – IRIT INSA, Salle des thèses, Toulouse
    #these
    Friday 12 February 2016, 10h00
    Data availability and security in cloud storage
    Théodore Jean Richard RELAZA – Team SEPIA – IRIT UT3 Paul Sabatier, IRIT, Salle des Thèses
    #these
    Thursday 26 November 2015, 14h00
    Contribution to the modeling of technology transfer in Green IT with Multi-Agent System
    Christina HERZOG – Team SEPIA – IRIT UT3 Paul Sabatier, IRIT, Salle des Thèses
    #these
    Thursday 12 September 2019 – Friday 13 September 2019
    Journées Cloud 2019 du GDR RSD (Réseau et Systèmes Distribués)
    UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #congres Know more
    Tuesday 3 July 2018 – Friday 6 July 2018
    Compas’2018 : Conférence d’informatique en Parallélisme, Architecture et Système
    INP-ENSEEIHT
    #congres Know more
    Monday 2 July 2018 – Tuesday 3 July 2018
    Edition 2018 des Green Days@Toulouse v2.0
    INP-ENSEEIHT
    #congres Know more
    Monday 18 July 2016 – Thursday 21 July 2016
    Workshop on Smart and Sustainable City
    Bâtiment U4
    #congres Know more
    Thursday 12 November 2015 – Friday 13 November 2015
    Journées Scientifiques SEPIA
    UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #congres Know more
    Monday 16 March 2015 – Tuesday 17 March 2015
    De l’énergétique au thermique, le Green IT est-il réellement vert ?
    UT3 Paul Sabatier, IRIT
    #congres Know more
    Tuesday 3 March 2020, 9h30 – 10h30
    Research problems in thread scheduling for multicore general purpose operating systems
    Gilles MULLER – INRIA Paris UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #seminaire
    Friday 28 September 2018, 10h30 – 11h30
    Enzian: making systems software research relevant in the face of custom hardware
    Timothy ROSCOE – ETH (Suisse) INP-ENSEEIHT, Salle des thèses
    #seminaire
    Wednesday 11 July 2018, 15h00 – 16h30
    From Pipes to Processors: Building High Performance Network Middleware
    Timothy WOODS – George Washington University (Etats-Unis) INP-ENSEEIHT, Salle B307
    #seminaire
    Monday 20 November 2017, 10h00 – 12h00
    Présentation du projet SeDuCe
    Jean-Marc MENAUD – Ecole des Mines de Nantes UT3 Paul Sabatier, IRIT, Salle des Thèses
    #seminaire
    Friday 7 July 2017, 10h30 – 12h00
    Everyday Computing with QCG MiddEveryday Computing with QCG Middleware and Toolsleware and Tools
    Tomasz PIONTEK – Poznan Supercomputing and Networking Center (Pologne) UT3 Paul Sabatier, IRIT, Salle 175
    #seminaire
    Wednesday 2 July 2014, 10h00
    Energy Efficient Computing from a Cloud Database Perspective
    Jie SONG – Team SEPIA – IRIT (France) UT3 Paul Sabatier, IRIT, Salle des Thèses
    #seminaire
    Thursday 7 December 2017, 10h00
    Resource management and performance improvement in virtualized infrastructures
    Alain TCHANA – Team SEPIA – IRIT INP-ENSEEIHT, Salle des thèses
    #hdr
    Friday 13 November 2015, 10h00
    La gestion des ressources pour des infrastructures vertes par la reconfiguration
    Patricia STOLF – Team SEPIA – IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #hdr
    Thursday 12 November 2015, 14h30
    Évaluation et optimisation de performance énergétique des centres de calcul
    Georges DA COSTA – Team SEPIA – IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #hdr
    Thursday 11 December 2014, 10h00
    Optimisation du stockage et de la gestion des données en environnements parallèles et distribués
    Jacques JORDA – Team SEPIA – IRIT UT3 Paul Sabatier, IRIT, Salle des Thèses
    #hdr