- François Tessier (Inria)
- Gabriel Antoniu (Inria)
- Philippe Deniel (CEA)
- Thomas Leibovici (CEA)
- KerData is a human-sized team currently comprising 5 permanent researchers, 2 contract researchers, 1 engineer and 5 PhD students. You will work in a caring environment, offering a good work-life balance .
- KerData is leading multiple projects in top-level national and international collaborative environments such as within the Joint-Laboratory on Extreme-Scale Computing : Our team has active collaboration with high-profile academic institutions all around the world (including the USA, Spain, Germany or Japan) and with industry.
- Our team strongly favors experimental research , validated by implementation and experimentation of software prototypes with real-world applications on real-world platforms incluing some of the most powerful supercomputers worldwide.
- The KerData team is committed to personalized advising and coaching, to help PhD candidates train and grow in all directions that are critical in the process of becoming successful researchers.
- Check our website for more about the KerData team here: Mission confiée Introduction Nowadays, there are many scientific fields such as radio-astronomy or weather forecast for example where the need for computing power and data processing capacity goes beyond what current machines can provide. For these workloads, the resources required are such that supercomputers capable of reaching the exascale become necessary. To date, only a few machines such as Frontier at Oak Ridge National Laboratory (USA) have this capability, but in the coming months, new systems will be deployed. However, the efficient use of these systems raises new challenges, especially regarding data management. Indeed, even though High-Performance Computing (HPC) systems are increasingly powerful, there has been a relative decline in I/O bandwidth . Over the past ten years, the ratio of I/O bandwidth to computing power of the top three supercomputers has been divided by 10 (see Figure below) while in some scientific computing centers the volume of data stored has been multiplied by 41 [1]. This tends to accentuate congestion and performance variability on often centralized storage systems [2,3]. To mitigate that, new levels of storage have been added to recently deployed supercomputers, increasing their complexity. Harnessing this additional storage capacity is an active research topic but little has been done about how to efficiently provision it [4,5]. Thesis proposal Dealing with this high degree of storage heterogeneity is a real challenge for scientific workflows and applications. This PhD thesis proposes to model and simulate heterogeneous storage systems in order to study their behavior, predict their performance and propose innovative algorithmic approaches for better resource utilization.
- An excellent Master degree in computer science or equivalent
- Completion of a teaching unit in high-performance computing or distributed computing is an advantage
- Programming skills in C/C++ and Python
- Good communication skills in oral and written English.
- Open-mindedness, strong integration skills and team spirit
- Subsidized meals
- Partial reimbursement of public transport costs
- Possibility of teleworking (90 days per year) and flexible organization of working hours
- Partial payment of insurance costs
-
Linux Support Engineer, Emea
il y a 1 semaine
Canonical - Jobs Rennes, France**Linux Support Engineer** · **The role of a Linux Support Engineer at Canonical** · This role is an opportunity for a technologist with a passion for Linux and Customer Success to build a career with Canonical and drive the success with those leveraging Ubuntu and open source pr ...
-
Software Developer Rust F/H/N
il y a 1 semaine
OVHcloud Rennes, FrancePoste basé à Rennes, Brest, Roubaix, Paris ou Toulouse. · #OVHcloud · Vous voulez contribuer à des projets uniques pour construire ensemble le cloud libre ? Allons-y · Chez OVHcloud, nous sommes animés par la même volonté, celle de construire l'avenir ensemble pour défendre la l ...
-
Expert Big Data
il y a 1 semaine
Orange Business Rennes, FranceL'ambition d'Orange Business est de devenir l'intégrateur réseau et numérique de référence en Europe, en nous appuyant sur nos forces autour des solutions de connectivité nouvelle génération, du cloud et de la cybersécurité. Nos femmes et hommes présents dans 65 pays, dont chaque ...
-
Expert Virtualisation Cloud F/H
il y a 6 jours
Orange Business Rennes, FranceL'ambition d'Orange Business est de devenir l'intégrateur réseau et numérique de référence en Europe, en nous appuyant sur nos forces autour des solutions de connectivité nouvelle génération, du cloud et de la cybersécurité. · Nos femmes et hommes présents dans 65 pays, dont chaq ...
-
Chef·fe de Projet DATA H/F
il y a 5 jours
BVA Data Factory Rennes, FranceVous êtes curieux · se et aimez comprendre les tendances de demain, vous challenger et expérimenter de nouveaux dispositifs ? Et si vous veniez travailler avec nous... · Rejoindre The BVA Family c'est avant tout participer à une aventure humaine · Afin de participer à la réalisa ...
-
Expert Virtualisation Cloud F/H
il y a 2 semaines
Orange Business Rennes, FranceL'ambition d'Orange Business est de devenir l'intégrateur réseau et numérique de référence en Europe, en nous appuyant sur nos forces autour des solutions de connectivité nouvelle génération, du cloud et de la cybersécurité. · Nos femmes et hommes présents dans 65 pays, dont cha ...
-
INRIA Rennes, France CDDContexte et atouts du poste · Supervisory Team · Silvina Caino-Lores, PhD (Inria, France) · Gabriel Antoniu, PhD, HDR (Inria, France) · Location and Mobility · The thesis will be hosted by the KerData team at the Inria research center of Rennes. Rennes is the capital city of B ...
-
R&D Engineer in Physic and Chemistry, PhD
il y a 4 jours
Sweetch Energy Rennes, France À temps pleinAbout us · Sweetch Energy is a renewable energy player specialising in osmotic energy, committed to a carbon neutral world. Based in Rennes, our journey started in 2015 and we are proud to build a net zero future by exploiting a massively available, yet untapped, natural source o ...
-
INRIA Rennes, France CDDContexte et atouts du poste · Supervisory Team · Silvina Caino-Lores, PhD (Inria, France) · Alexandru Costan, PhD, HDR (INSA Rennes, France) · Rafael Ferreira da Silva, PhD (Oak Ridge National Laboratory, USA) · Ana Trisovic, PhD (Massachusetts Institute of Technology, USA) · L ...
-
Développeur Rust
il y a 4 jours
OVHcloud Cesson-Sévigné, FranceDéveloppeur Rust H/F/N · Au sein de votre équipe #OneTeam · Vous évoluerez au sein de l'Unité Object Storage qui gère l'ensemble des offres du même nom chez OVHcloud et dont l'ambition est de construire l'offre la plus performante et efficace du marché. · En tant que développeur ...
-
Ingénieur Multi-Cloud F/H
il y a 6 jours
Orange Business Cesson-Sévigné, FranceL'ambition d'Orange Business est de devenir l'intégrateur réseaux et numérique de référence en Europe, en nous appuyant sur nos forces autour des solutions de connectivité nouvelle génération, du cloud et de la cybersécurité. · Nos femmes et hommes présents dans 65 pays, dont cha ...
-
Ingénieur Multi-Cloud F/H
il y a 5 jours
Orange Business Services Cesson-Sévigné, Franceabout the role · Notre équipe Cloud et Outils regroupe des femmes et des hommes motivé(e)s par les technologies apportées par les hyperscalers du marché. Au sein de l'équipe sont opérés les clouds Amazon et Microsoft Azure, ainsi que VMware pour un très grand compte. · Nos enje ...
-
Expert Virtualisation Cloud Computing F/H
il y a 4 jours
Orange Business Services Cesson-Sévigné, Franceabout the role · "Dans un contexte international, vous travaillerez dans un environnement technique riche, très diversifié et en renouvellement constant. Vous serez impliqué sur des projets d'envergure pour des clients grands comptes ou sur la création des offres et architectur ...
-
Orange Business Services Cesson-Sévigné, Franceabout the role · Your role is to work on the thesis entitled : « Reconfiguration and orchestration of network's digital twins » · Global context and problem of the subject · The digital twin is part of the major strategic technological trends [1]. Digital twins maintain of a ...
-
Ingénieur Administration Systèmes et Réseaux
il y a 4 jours
DGA MI BRUZ Bruz, France CDILe poste de Ingénieur Administration Systèmes et Réseaux (H/F) · Mission : · Concevoir, déployer et administrer les systèmes d'information au profit des activités de cyberdéfense. L'administrateur système et réseau assure la supervision, la gestion, la sécurisation, l'évolution e ...
PhD Position F/M Modeling and Simulation of Exascale Storage Systems - Rennes, France - INRIA
Description
Contexte et atouts du poste
Context
This thesis is placed in the context of NumPEx ( a key national project whose goal is to co-design the software stack for the exascale era and prepare applications accordingly. This thesis will be co-supervised by Inria and CEA , respectively the Inria center at the University of Rennes and the CEA center at Bruyères-Le-Châtel, near Paris. Beyond the supervision, collaborations within NumPEx with the different partners of the consortium are to be expected.
PhD Advisors
Location and Mobility
The thesis, co-supervised by Inria and CEA, will be hosted by the KerData team at the Inria research center of Rennes and will include regular visits at the CEA Center of Bruyères-le-Châtel. Rennes is the capital city of Britanny, in the western part of France. It is easy to reach thanks to the high-speed train line to Paris. Rennes is a dynamic, lively city and a major center for higher education and research: 25% of its population are students.
This thesis will also include collaborations with international partners , especially from the US.
The KerData team in a nutshell for candidates
Principales activités
One of the aims of this thesis is to make better use of storage resources for scientific applications and workflows that are destined to run on exascale supercomputers. Initially, storage systems such as Lustre and DAOS will be studied, modeled and simulated in an existing WRENCH-based [6] simulator, called StorAlloc [5], developed in the team. This study will shed light on the criteria influencing the performance of these systems. Secondly, advanced resource allocation algorithms will be proposed, implemented and evaluated in the simulator to overcome the limitations of existing methods (e.g. Lustre uses the disks of its storage system in a simple round-robin manner). Multiple criteria can be taken into account in those algorithms such as contention or energy. Tools developed by the CEA, including the Robinhood policy engine [7] and the outcomes from the IO-SEA European Project [8] will also be used to validate these contributions on real systems. For this work, a strong emphasis will be put on international collaborations , especially with the University of Manoa (HI, USA), and on national partnership such as with the French SKA team providing a relevant use-case for this work. The candidate will also have the opportunity to be hosted for 3-6 month internships abroad to strengthen the international visibility of his/her work and benefit from the expertise of other researchers in the field.
References
[1] GK. Lockwood, D. Hazen, Q. Koziol, RS. Canon, K. Antypas, and J. Balewski. "Storage 2020: A Vision for the Future of HPC Storage". In: Report: LBNL Lawrence Berkeley National Laboratory, 2017.
[2] O. Yildiz, M. Dorier, S. Ibrahim, R. Ross, and G. Antoniu. "On the Root Causes of Cross-Application I/O Interference in HPC Storage Systems". In: 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS). 2016, pp. 750–759
[3] F. Tessier, V. Vishwanath. "Reproducibility and Variability of I/O Performance on BG/Q: Lessons Learned from a Data Aggregation Algorithm". United States: N. p., 2017. Web. doi:10.2172/1414287
[4] F. Tessier, M. Martinasso, M. Chesi, M. Klein, M. Gila. "Dynamic Provisioning of Storage Resources: A Case Study with Burst Buffers". In: IPDPSW IEEE International Parallel and Distributed Processing Symposium Workshops, May 2020, New Orleans, United States.
[5] J. Monniot, F. Tessier, M. Robert, G. Antoniu. "StorAlloc: A Simulator for Job Scheduling on Heterogeneous Storage Resources". In: HeteroPar 2022, Aug 2022, Glasgow, United Kingdom.
[6] H. Casanova, R. Ferreira da Silva, R. Tanaka, S. Pandey, G. Jethwani, W. Koch, S. Albrecht, J. Oeth, and F. Suter. "Developing Accurate and Scalable Simulators of Production Workflow Management Systems with WRENCH". In: Future Generation Computer Systems, vol. 112, p , 2020.
[7] > [8]
Compétences
Avantages
Rémunération
monthly gross salary amounting to 2051 euros for the first and second years and 2158 euros for the third year
