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, Datacenter
Virtualized operating systems

team Members

Permanent members
Non-permanent members
External members

team publications

International journals articles
  • Maël Madon, Georges da Costa, Jean-Marc Pierson

    Replay with Feedback: How does the performance of HPC system impact user submission behavior?

    Future Generation Computer Systems, 2024, 155, pp.66-79. ⟨10.1016/j.future.2024.01.024⟩

    Accès: https://hal.science/hal-04432711

  • Julie Bu Daher, Tom Huygue, Patricia Stolf, Nathalie Jane Hernandez

    An Ontology and a Reasoning Approach for Evacuation in Flood Disaster Response

    Journal of Information and Knowledge Management, 2023, ⟨10.1142/S0219649223500429⟩

    Accès: https://hal.science/hal-04219971

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

    HyperTP: A unified approach for live hypervisor replacement in datacenters

    Journal of Parallel and Distributed Computing, 2023, 181, pp.104733. ⟨10.1016/j.jpdc.2023.104733⟩

    Accès: https://hal.science/hal-04477700

  • Daniel Lezcano, Georges da Costa

    O/S level interrupt prediction for performance and energy management on Android

    IEEE Transactions on Mobile Computing, 2023, pp.1-12. ⟨10.1109/TMC.2023.3253798⟩

    Accès: https://hal.science/hal-04095844

  • 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⟩

    Accès: https://hal.science/hal-03907179

  • Brice Ekane, Dinh Ngoc Tu, Boris Teabe, 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⟩

    Accès: https://hal.science/hal-03534360

  • 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⟩

    Accès: https://hal.science/hal-03940473

  • 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⟩

    Accès: https://hal.science/hal-03995231

  • 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⟩

    Accès: https://hal.science/hal-03794757

  • 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⟩

    Accès: https://hal.science/hal-03220224

  • National journals articles
  • 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⟩

    Accès: https://hal.science/hal-03548865

  • National journals articles
    Special issues of journal
    International conferences articles
  • Jean-Baptiste Decourcelle, Tu Dinh Ngoc, Boris Teabe, Daniel Hagimont

    Fast VM Replication on Heterogeneous Hypervisors for Robust Fault Tolerance

    Middleware ’23: 24th International Middleware Conference, Dec 2023, Bologna Italy, France. 14 p., ⟨10.1145/3590140.3592849⟩

    Accès: https://hal.science/hal-04095419

  • Romain Meunier, Farah Benamara, Véronique Moriceau, Patricia Stolf

    Image and Text: Fighting the Same Battle? Super-resolution Learning for Imbalanced Text Classification

    Conference on Empirical Methods in Natural Language Processing (EMNLP 2023), Dec 2023, Singapour, Singapore. pp.10707-10720, ⟨10.18653/v1/2023.findings-emnlp.718⟩

    Accès: https://hal.science/hal-04347311

  • Igor Fontana de Nardin, Patricia Stolf, Stéphane Caux

    BEASY: Making EASY backfilling renewable-only

    35th IEEE International Symposium on Computer Architecture and High Performance Computing (SBAC-PAD 2023), IEEE, Oct 2023, Porto Alegre, Brazil. pp.57-67, ⟨10.1109/SBAC-PAD59825.2023.00015⟩

    Accès: https://inria.hal.science/hal-04206083

  • Louis-Claude Canon, Damien Landré, Laurent Philippe, Jean-Marc Pierson, Paul Renaud-Goud

    Assessing Power Needs to Run a Workload with Quality of Service on Green Datacenters

    29th International European Conference on Parallel and Distributed Computing (EURO-PAR 2023), Aug 2023, Limassol, Cyprus. pp.229–242, ⟨10.1007/978-3-031-39698-4_16⟩

    Accès: https://hal.science/hal-04257315

  • Thierry Monteil

    Integration of Green aspect inside Internet of Things standard

    24th International Conference on Internet Computing & IoT (ICOMP 2023), Jul 2023, Las vegas, United States. à paraître

    Accès: https://hal.science/hal-04279735

  • Louis-Claude Canon, Damien Landré, Laurent Philippe, Jean-Marc Pierson, Paul Renaud-Goud

    Évaluation de la consommation d’énergie nécessaire à l’exécution d’un workload dans un datacenter vert

    Conférence d’informatique en Parallélisme, Architecture et Système (COMPAS 2023), Laboratoire d’Informatique, Systèmes, Traitement de l’Information et de la Connaissance (LISTIC) – Université Savoie Mont Blanc, Jul 2023, Annecy, France

    Accès: https://hal.science/hal-04257319

  • Aurélien Richa, Chihab Hanachi, Patricia Stolf

    Simulating and Analyzing Crowdsourcing Impacts in Flooding Management: a geo-spatial agent-based approach

    35th International Conference on Advanced Information Systems Engineering (CAiSE 2023), Jun 2023, Zaragoza, Spain. pp.107-122, ⟨10.1007/978-3-031-34560-9_7⟩

    Accès: https://hal.science/hal-04120703

  • Miguel Felipe Silva Vasconcelos, Daniel Cordeiro, Georges da Costa, Fanny Dufossé, Jean-Marc Nicod, Veronika Rehn-Sonigo

    Optimal sizing of a globally distributed low carbon cloud federation

    CCGrid 2023 – IEEE/ACM 23rd International Symposium on Cluster, Cloud and Internet Computing, May 2023, Bangalore, India. pp.1-13, ⟨10.1109/CCGrid57682.2023.00028⟩

    Accès: https://hal.science/hal-04032094v2

  • Louis-Claude Canon, Damien Landré, Laurent Philippe, Jean-Marc Pierson

    Évaluation de la consommation d’énergie nécessaire à l’exécution d’un workload dans un datacenter vert

    24e Congrès annuel de la société Française de Recherche Opérationnelle et d’Aide à la Décision (ROADEF 2023), Société Française de Recherche Opérationnelle et d’Aide à la Décision, Feb 2023, Rennes, France

    Accès: https://hal.science/hal-04257320

  • G.V. Ihita, Vybhav.K. Acharya, Likhith Kanigolla, S. Chaudhari, Thierry Monteil

    Security for oneM2M-Based Smart City Network: An OM2M Implementation

    2023 15th International Conference on COMmunication Systems & NETworkS (COMSNETS), Jan 2023, Bangalore, India. pp.808-813, ⟨10.1109/COMSNETS56262.2023.10041334⟩

    Accès: https://hal.science/hal-04279711

  • National conferences articles
  • Quentin Guilloteau, Adrien Faure, Millian Poquet, Olivier Richard

    Comment rater la reproductibilité de ses expériences ?

    ComPAS 2023 Conférence francophone en informatique, Jul 2023, Annecy, France. à paraître

    Accès: https://hal.science/hal-04132438

  • Morgan Séguéla, 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.science/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.science/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://inria.hal.science/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://inria.hal.science/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.science/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.science/hal-02982965

  • Books Books edition Books parts
    Thesis and HDR
  • Igor Fontana de Nardin

    Ordonnancement en ligne de tâches IT et engagement de sources dans un centre de calcul alimenté par des énergies renouvelables

    Réseaux et télécommunications [cs.NI]. Institut National Polytechnique de Toulouse – INPT, 2023. Français. ⟨NNT : 2023INPT0104⟩

    Accès: https://theses.hal.science/tel-04361471

  • Rémi Meunier

    Execution time prediction for applications running on multi-core architectures

    Networking and Internet Architecture [cs.NI]. INSA de Toulouse, 2023. English. ⟨NNT : 2023ISAT0031⟩

    Accès: https://theses.hal.science/tel-04457889

  • Morgan Séguéla

    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⟩

    Accès: https://theses.hal.science/tel-03924082

  • Florent Dubois

    The vehicle routing problem for flash floods relief operations

    Modeling and Simulation. Université Paul Sabatier – Toulouse III, 2022. English. ⟨NNT : 2022TOU30074⟩

    Accès: https://theses.hal.science/tel-03726667

  • Lavoisier Wapet

    Preventing the release of illegitimate applications on mobile markets

    Other [cs.OH]. Institut National Polytechnique de Toulouse – INPT, 2021. English. ⟨NNT : 2021INPT0026⟩

    Accès: https://theses.hal.science/tel-04169856

  • 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://theses.hal.science/tel-03280438

  • Vo Quoc Bao Bui

    Virtualization of micro-architectural components using software solutions

    Networking and Internet Architecture [cs.NI]. Institut National Polytechnique de Toulouse – INPT, 2020. English. ⟨NNT : 2020INPT0082⟩

    Accès: https://theses.hal.science/tel-04170799

  • Grégoire Todeschi

    Optimisation des caches de fichiers dans les environnements virtualisés

    Réseaux et télécommunications [cs.NI]. Institut National Polytechnique de Toulouse – INPT, 2020. Français. ⟨NNT : 2020INPT0048⟩

    Accès: https://theses.hal.science/tel-04166072

  • Mathieu Bacou

    Performance et gestion de ressources dans un cloud multi-virtualisé

    Réseaux et télécommunications [cs.NI]. Institut National Polytechnique de Toulouse – INPT, 2020. Français. ⟨NNT : 2020INPT0042⟩

    Accès: https://hal.science/tel-03139720v2

  • 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://theses.hal.science/tel-02628518

  • 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.science/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.science/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.science/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.science/hal-03120278

  • Reports

    team Contracts

    AcronymeTitreResp. scDébut – fin
    DATAZERO2 autre 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
    DELIGHT aDvancing fEderated LearnIng while reducinG tHe carbon fooTprint Georges DA COSTA
    2023 – 2026
    WALKIN
    [Contract completed]
    Mise à jour des hyperviseurs dans les data centers de cloud Boris TEABE
    2020 – 2023
    ENERGUMEN
    [Contract completed]
    autre Optimiser l’énergie des plate-formes de calcul à large échelle Georges DA COSTA
    2018 – 2023
    SCALEVISOR
    [Contract completed]
    Scalevisor: un hyperviseur pour rack désagrégé Daniel HAGIMONT
    2018 – 2021
    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
    AcronymeTitreResp. scDébut – fin
    Labex CIMI Centre International de Mathématiques et d’Informatique (de Toulouse) Joseph GERGAUD
    Christine ROCHANGE
    Franck MORVAN
    Denis KOUAMÉ
    Lotfi CHAARI
    Urtzi AYESTA
    Boris TEABE
    Thomas CARLE
    Emmanuel SOUBIES
    José Henrique DE MORAIS GOULART
    2012 – 2024
    Blablamen
    [Contract completed]
    Pré-maturation Région : BlaBlaMem : un service de co-voiturage mémoire dans un datacenter Daniel HAGIMONT
    2017 – 2019
    i-Nondations
    [Contract completed]
    Gestion multi-vues des crues rapides Patricia STOLF
    2017 – 2021
    DATAZERO
    [Contract completed]
    Datacenters robustes utilisant de l’énergie renouvelable Jean-Marc PIERSON
    2015 – 2020
    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
    AcronymeTitreResp. scDébut – 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
    Monday 5 February 2024, 10h00
    Walk-In : interfaces de virtualisation flexibles pour la performance et la sécurité dans les datacenters modernes
    Tu DINH NGOC – , IRIT Toulouse INP-ENSEEIHT, Salle des thèses C002
    #these
    Wednesday 13 December 2023, 10h00
    Online scheduling for IT tasks and power source commitment in data centers only operated with renewable energy
    Igor FONTANA DE NARDIN – Team SEPIA, IRIT INP-ENSEEIHT, Salle des thèses
    #these
    Thursday 30 November 2023, 14h00
    Execution time prediction of real-time applications running on multi-core platforms
    Rémi MEUNIER – Team SEPIA, Team TRACES, IRIT UT3 Paul Sabatier, IRIT, Auditorium J. Herbrand
    #these
    Wednesday 4 May 2022, 14h00
    Stratégie de réplication de données dans des systèmes larges échelles pour prendre en compte la consommation énergétique et la dépense
    Morgan SEGUELA – Team PYRAMIDE, Team SEPIA, IRIT UT3 Paul Sabatier, IRIT, Salle des Thèses
    #these
    Tuesday 5 April 2022, 10h00
    The vehicle routing problem for flash floods relief operations
    Florent DUBOIS – Team SEPIA, IRIT UT3 Paul Sabatier, IRIT, Salle des Thèses
    #these
    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
    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
    Thursday 26 October 2023, 10h00 – 12h00
    Energy Informatics – Use Case of Data Centers
    Robert BASMADJIAN – Clausthal University of Technology (TU Clausthal) (Allemagne) UT3 Paul Sabatier, IRIT, Salle des Thèses
    #seminaire
    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