51 ième Forum « Vers l’exascale et au-delà : architectures et technologies »

51 ième Forum « Vers l’exascale et au-delà : architectures et technologies »

Mardi 17 octobre 2023 – Siège CNRS/16ème Paris


[FR] Avec des machines de classe « Exascale » aux USA et bientôt en Europe, nous entrons dans une nouvelle ère du calcul extrême. Le 50ème Forum ORAP avait commencé à en explorer les applications, ce Forum 51 revient sur les tendances en termes de technologies et d’architectures. Cet état des lieux permettra également de se projeter et de discuter les enjeux associés aux machines de classe « post Exascale » attendues avant la fin de la décennie : environnement, souveraineté, programmation, hétérogénéité.

[EN] With Exascale class machines in the USA and soon in Europe, we are entering a new era of extreme computing. The 50th ORAP Forum had begun to explore future exascale application ;  this 51st Forum will review Exascale trends in terms of technologies and architectures. This inventory will also make it possible to foresee and discuss the issues associated with « post Exascale » class machines, expected before the end of the decade: environmental stakes, sovereignty, ease of programming, heterogeneity.

  • 9:15 - 9:30 Introduction

  • 9:30 – 10:00 Point France : Projet Jules Verne (S. Requena, Genci)

    Following the call for expression of interest issued by EuroHPC to co-fund, host and operate its second Exascale system (after the first one called Jupiter hosted and operated by FZJ in Germany) a consortium called Jules Verne formed by France (with GENCI as Hosting Entity and CEA/TGCC as Hosting Site) and The Netherlands (with SURF) has been selected on June 20th.
    The envisioned system will provide access to research communities from academia and industry as well as public services and large scale instruments, addressing societal and industrial challenges in climate, energy, health/medecine, NLP and foundation models or decision making using urgent computing through the convergence of HPC, HPDA, AI and possibly hybrid quantum computing.
    Benefiting from the latest scalar and accelerated technologies this system of >1 EFlops sustained performance will also embed European hardware and software technologies (processor, network, infrastructure, middleware and development tools) as well as end user applications.
    It is expected that the system will be installed and available end of 2025 by EuroHPC and GENCI at TGCC, the CEA computing center close to Paris.
    Stéphane Requena is Director of Technology and Innovation at GENCI (France). Previously he has been during 10 years in charge of the HPC facilities at Institut Français du Pétrole and involved into optimisation and parallelisation of oil & gas (geology, seismic, reservoir modeling) and automotive applications. He also worked at CS a French service company in parallelising applications in the field of energy for EDF and CEA. At GENCI he has been involved in several European projects including PRACE aisbl (as memnber of the Board of Directors), PRACE implementation projects (Prace-xIP), PPI4HPC (Public Procurement of HPC Innovative Solutions), Mont-Blanc (toward ARM based architectures used for HPC), EPI and EUPEX (toward designing European Processor technologies), EESI (European Exascale Software Initiative) and EXDCI (European eXtreme Data and Computing Initiative) in relation to the scientific and industrial applications roadmaps. He is also currently involved into EuroHPC as member of INFRAG and into Jules Verne consortium for the 2nd EuroHPC Exascale system. At GENCI he is also in charge of the development of innovative services toward the use of AI, quantum computing, use of urgent computing for decision making, link with scientific instruments and the technical part of GENCI’s procurements for HPC and storage facilities.
  • 10:00 – 10:30 Leonardo Supercomputer and the Big Data Technopole in Bologna (D. Cesarini, Cineca)



    The supercomputer Leonardo is one of the three pre-exascale supercomputers that will form the European high-performance computing network of EuroHPC Joint Undertaking. Leonardo is co-funded by the EuroHPC and the Italian Ministry of Universities and Research and it’s hosted in the new CINECA’s data centre at the Bologna Big Data Technopole. The Technopole is considered the Italian Data Valley Hub where is located over 80% of total computing capacity in Italy. It’s a complex innovation ecosystem in the Emilia-Romagna region where a broadly ecosystem based of research, businesses and high-tech expertise are focused to extract value from data, carry-out direct decision-making, highlight correlations and protect the environment, citizens and their assets. The Technopole also host the supercomputer of ECMWF and it has been recently announced that the United Nations University (UNU) will establish a research and training institute to catalyse global collaboration and innovation in the utilization of big data and artificial intelligence to manage human habitat change.


    Dr. Cesarini is a Project Manager & HPC Technology Specialist at the HPC department of CINECA where his works is focused on the design of the next-generation HPC architectures to define the strategic roadmap of Italian and European supercomputers. He is Vice-chair for Research of ETP4HP and he is part of the scientific advisory board of EuroHPC JU (RIAG). He manages for CINECA several European founded projects (EPI-SGA1, EPI-SGA2, EUPEX, REGALE, etc.) and national projects of the Italian Recovery and Resilience Plan (PNRR). He graduated in Computer Engineering from the University of Bologna (Italy) in 2014, where he also earned his Ph.D. in Electronics, Telecommunications, and Information Technologies Engineering in 2019.

  • 10:30 – 11:00 Adastra (G. Hautreux, Cines)


    Adastra, le dernier supercalculateur acheté par GENCI et exploité au CINES, est basé sur les dernières technologies exascales fournies par HPE et AMD. Ce supercalculateur était classé numéro 1 dans le Top500 et numéro 3 dans le Green500 en novembre 22. Il est maintenant classé 12e dans le Top500 mais conserve sa 3e position dans le Green500.
    La même architecture a été déployée à Frontier (n°1 au Top500) pour franchir le cap de l’exascale pour la première fois dans le Top500. La machine n°3, achetée par EuroHPC et exploitée à LUMI Finlande, est également basée sur la même architecture. Cette architecture sera présentée et un premier retour d’expérience sera fourni.
    Les perspectives de la prochaine étape pour l’exascale au sein de cette architecture seront discutées.


    Adastra, the latest supercomputer bought by GENCI and operated at CINES, is based on the latest exascale technologies provided by HPE and AMD. This supercomputer was ranked # in Top500 and #3 in Green500 in November 22. It is now ranked #12 in Top500 but keeps its 3rd position in Green500. The same architecture was deployed at Frontier (#1 Top500) to break the exascale for the first time in the Top500. The #3 machine, bought by EuroHPC and operated in LUMI Finland is also based on the same architecture. This architecture will be presented, and a first return on experience will be provided. On top of that, perspectives on what will be the next step for exascale in such architecture will be discussed.


    Gabriel Hautreux est responsable du département HPC au CINES et a géré le déploiement du cluster de pointe Adastra, #11 au TOP500 et #3 au GREEN500 en novembre 2022. Ses activités actuelles visent à permettre à la communauté des chercheurs d’exploiter les applications utilisant les technologies exascales, ainsi qu’à augmenter l’efficacité énergétique des applications et à réduire l’empreinte énergétique et carbone des centres HPC.Il est spécialiste des architectures exascales, des nouveaux paradigmes de développement et de l’efficacité énergétique pour les architectures HPC et AI.

    Gabriel Hautreux is in charge of the HPC department at CINES and managed the deployement of the leading edge cluster Adastra, #11 at TOP500 and #3 at GREEN500 in November 22. His current activities aim to enable the research community to leverage application using exascale technologies, as well as increasing the energy efficiency of applications and reducing the global energy and carbon footprint of HPC center. He is a specialist in exascale architectures, new development paradigms and energy efficiency for HPC and AI architectures..

  • 11:00 - 11:30 Pause

  • 11:30 - 12:00 Exascale for Science (Frédéric Parienté, Nvidia)


    The modern supercomputer will leverage the new workloads of AI, Digital Twins, Quantum Computing, to solve the grand scientific challenges of the 21st century.


    Frédéric Parienté (he/him) is a director in the solutions architecture and engineering group at NVIDIA. He is working with European customers in the Higher-Education & Research and Supercomputing sectors notably, on the adoption of HPC and AI. He is also managing the NVIDIA AI Technology Center (NVAITC) in EMEA, whose mission is to enable and accelerate AI research, education and adoption across the network of NVAITC Joint Labs.

  • 12:00 - 12:30 Building, delivering, and sustaining the path to Exascale and beyond with AMD (S. Antao, AMD)


    While Frontier is the 1st machine to break the Exaflop barrier, it is also one of the most power energy efficient systems in the world, sustaining real scientific production today. This prowess will continue in the coming months and years: AMD is driven by advancing both HPC and AI capabilities, providing TCO advantages while supporting the scientific community to adopt massively accelerated resources. Thus, AMD Instinct has a well-defined path to support users’ needs beyond Exascale.


    Samuel Antao has a vast experience in optimisation and performance tuning for HPC applications and systems with focus on accelerators. His work spans hardware design with FPGAs, programming model research, compiler development and application optimisation for GPUs. Samuel has participated in several cutting-edge projects around HPC in Europe and in US, including CORAL, having spearheaded the GPU support for OpenMP in Clang/LLVM and helping numerous scientists and software developers to adopt the latest HPC technology and making the most out it. Samuel Antao is a Senior Member of Technical Staff with AMD and AMD lead to the LUMI Center of Excellence.

  • 12:45 - 14:00 Repas

  • 14:15 - 14:45 SiPearl and the European Processor Initiative (T. Lelégard, SiPearl)


    [EN] As Europe consumes nearly 30% of the world’s supercomputing resources, only 5% of supercomputers are supplied in Europe and exactly 0% of the microprocessors powering them are designed here. The European Processor Initiative (EPI) is the EU response to this strategic autonomy challenge. SiPearl is the private company which was created within the EPI. Located in France, Germany, and Spain, SiPearl designs the next energy-efficient microprocessor for HPC. And the subsequent generations of SiPearl microprocessors will power Europe’s data centers and cloud infrastructures.

    [FR] Quand l’Europe utilise près de 30% des ressources de super-calcul dans le monde, seulement 5% des supercalculateurs sont produits en Europe et exactement 0% des microprocesseurs qui les alimentent y sont conçus. EPI (European Processor Initiative) est la réponse de l’UE à ce défi de l’autonomie stratégique. SiPearl est l’entreprise privée qui a été créée dans le cadre d’EPI. Implantée en France, en Allemagne, et en Espagne, SiPearl conçoit les prochains microprocesseurs à haute efficacité énergétique pour supercalculateurs. Et les générations suivantes de microprocesseurs de SiPearl alimenteront les centres de données et les infrastructures cloud de l’Europe.


    [EN] Thierry Lelégard is head of platform security at SiPearl, in charge of product security architecture and cloud and data centers requirements. He worked 20 years in media content security and piracy fighting at Canal+, NagraVision, STMicroelectronics and Orange. Before that, he worked on resilient clusters, operating systems and compilers at DEC (Digital Equipment Corporation).

    [FR] Thierry Lelégard a la charge de l’architecture sécurité des produits ainsi que des besoins pour les infrastructures cloud et centres de données. Il a travaillé 20 ans dans la sécurité des contenus media et le combat contre le piratage chez Canal+, NagraVision, STMicroelectronics et Orange. Auparavant, il a travaillé sur les clusters résilients, les systèmes d’exploitation et les compilateurs chez DEC (Digital Equipment Corporation).

  • 14:45 - 15:15 High-performance RISC-V systems – Monte Cimone and recent developments (A. Bartolini, Université de Bologne)


    The new open and royalty-free RISC-V ISA is attracting interest across the whole computing continuum, from microcontrollers to supercomputers. High-performance RISC-V processors and accelerators have been announced, but RISC-V-based HPC systems will need a holistic co-design effort, spanning memory, storage hierarchy interconnects and full software stack. In this talk we cover results from the Monte Cimone project aiming to create HPC systems based on RISC-V SoCs.


    Andrea Bartolini is an Associate Professor at the Department of Electrical, Electronic and Information Engineering (Guglielmo Marconi) at the University of Bologna. He was a postdoctoral researcher with the Integrated Systems Laboratory, Swiss Federal Institute of Technology, Zurich. He has authored or co-authored more than 135 papers in peer-reviewed international journals and conferences, and several book chapters with a focus on dynamic resource management—ranging from embedded to large-scale HPC systems. He has collaborated with several international researchers and companies. Andrea Bartolini has been the main responsible for the design of advanced power management and monitoring support on the first Cavium ThunderX cluster, the D.A.V.I.D.E. and Marconi100 supercomputers. Since 2018, Andrea Bartolini has served as the technical leader for the European-processor-initiative power management design. In 2021, Andrea Bartolini collaborated with CINECA and E4 engineering in the design of the Monte Cimone HPC cluster – the first RISC-V HPC cluster.

  • 15:15 - 15:45 Calculateur efficient dédié à l’IA / Efficient AI compute platform (G. Soubrane, Graphcore)


    Graphcore holds a unique position in the European AI ecosystem of companies capable to bring to market dedicated hardware along with a full software stack. We will present our singular approach allowing to drive unprecedented performances leveraging massive independent parallel computing capacity collocated with huge on-chip memory. We will explore how to such a compute density is achieved thanks to our MIMD architecture on latest process nodes and a BSP low-precision processing, together bringing best-in-class AI compute efficiency for performance, cost and energy consumption.


    Gautier Soubrane is leading business development at Graphcore in EMEA and APAC regions. He cumulates 20+ years of experience in the semiconductor, telecom, finance and medical devices industries. He holds an MBA from IMD and a Master’s degree in Electronics and Telecom from ESEO. Prior to joining Graphcore, Gautier worked at DDN managing the AI business division in Europe and back in early 2000’s, he proudly contributed to launch the very first smartphones and single-chip RF+DSP/ARM solutions with Texas Instruments.

  • 15:45 - 16:15 Pause

  • 16:15 - 17:15 Quel horizon pour le Zettascale ? (Animation F. Bodin, Université de Rennes)

    By 2025, with the introduction of the Exascale Jules Verne machine, the race to Zettascale will intensify. Fundamental challenges such as scalability, complexity management, human resource considerations, sustainability, environmental impact, energy efficiency, and data management during operation will become even more pressing than they are today. Additionally, the concept of Zettascale as a singular, centralized system may be questioned due to ecological, technical, and operational considerations. Factors such as the proliferation of data sources for scientific applications, stringent energy consumption constraints, and the evolving HPC market’s inclination towards cloud technology will likely foster a vision of Zettascale as an interconnected system-of-systems.

    This round-table will present this forum speakers’ visions.

  • 17:20 Cloture