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  • Sustainable and Reliable Computing with Tools: Analyzing Precision Appetites of CFD Applications with VerifiCarlo

    Energy consumption constraints for large-scale computing encourage scientists to revise the architecture design of hardware but also applications, algorithms, as well as the underlying working/ storage precision. I will introduce an approach to address the issue of sustainable, but still reliable, computations from the perspective of computer arithmetic tools. We employ VerifiCarlo and its variable precision backend to identify the parts of the code that benefit from smaller floating-point formats. Finally, we show preliminary results on proxies of CFD applications.

  • VPREC to analyze the precision appetites and numerical abnormalities of several proxy applications

    The third in a series of presentations from Roman Iakymchuk on work using tools to investigate mixed precision possibilities. He and his co-author Pablo de Oliveira Castro introduce an approach to address the issue of sustainable computations with computer arithmetic tools. They use the variable precision backend (VPREC) to identify parts of code that can benefit from smaller floating-point formats and show preliminary results on several proxy applications.

  • PLENARY: EuroHPC Users: How Are They Exploiting the Current EuroHPC Systems & Will Exploit Future Exascale Capabilities?,

    Flanders Meeting and Convention Centre, A Room with a ZOO Koningin Astridplein 20-26, Antwerp, Belgium

    If you’re attending the EuroHPC Summit Week this month in Antwerp, make sure to join our Niclas Jansson for a PLENARY, “EuroHPC Users: How Are They Exploiting the Current EuroHPC Systems & Will Exploit Future Exascale Capabilities?”
    17:15→18:45

  • A Fluid-Solid Coupled Micromechanical Simulation of Piping Erosion During the Installation of a Suction Bucket for the Foundation of an Offshore Wind Turbine

    Lisbon Congress Centre Praça das Indústrias 1, Lisboa, Portugal

    If you’re not in the mini-symposium with Anna, make sure to come see Samuel Kemmler’s talk ‘A Fluid-Solid Coupled Micromechanical Simulation of Piping Erosion During the Installation of a Suction Bucket for the Foundation of an Offshore Wind Turbine’. It is part of the mini-symposium 020 – Advancements in Offshore Wind Structures , which will be held in Room 2.02.

  • ‘Enabling mixed-precision with the help of tools: A Nekbone case study’ at PPAM24

    Ostrava, Czechia Ostrava, Czech Republic

    If you’re going to PPAM24 September 8 – 11 in Ostrava, Czechia, make sure to check out the talk by Yanxiang Chen from our partner UMU on their progress implementing and optimizing mixed precision in Nekbone toward its integration in Neko and NekRS. The accompanying paper is also available as a pre-print online: https://arxiv.org/pdf/2405.11065

  • Mixed-Precision and Energy-Efficient Computations

    Join Yanxiang Chenat ISC in the Foyer D-G – on the 2nd floor to learn about our latest work using mixed precision to reduce energy consumption without compromising accuracy.

  • CEEC at ISC25

    Join our own Niclas Jansson at the Euro HPC JU booth for a presentation on our project and progress so far!

  • RESEARCH POSTER PITCH with Yanxiang Chen

    After listening to Niclas Jansson present our project at the EuroHPC JU booth at 1pm, strole over to Hall E to hear from our own Yanxiang Chen. If you want the chance to ask questions about how we’re using mixed precision to drive energy-to-solution down without compromising accuracy, make sure to stop by the research […]

  • Digital webinar poster for CEEC. Top right corner: CEEC logo in black capital letters with a small curved “wave” accent above the first E. Large heading on the left: “Webinar” followed by a small laptop icon. Second line, large bold text: “Enabling mixed-precision with VerifiCarlo: Sharing CEEC experience” Beneath the heading is a large dark-blue rectangular panel that contains the event details in white text with small icons: First line, next to a calendar icon: “May 27, 2026” Second line, next to a clock icon: “15:00 – 16:00 CEST” Third line, next to an icon of a small building: “Online” Lower part of the blue panel has two short descriptive sections: “Discover … Verificarlo, An open-source framework for verifying and optimizing numerical accuracy.” “Learn about … Verificarlo’s variable precision backend and that let’s one explore the trade-offs between precision and performance IN neuroimaging pipelines, DFT quantum mechanical modeling, structural simulations, and now CFD.” On the right side of the poster, framed by a thin dark border, is the Verificarlo logo: a large green checkmark leaning to the right, followed immediately by the word “verificarlo” in clean, black lowercase letters. The background is white with thin, subtle horizontal wave lines along the bottom edge, giving a light, technical, modern feel.

    Enabling mixed-precision with VerifiCarlo: Sharing CEEC experience

    Join our own Roman Iakymchuk, Umeå University on behalf of CEEC, and Pablo de Oliveira Castro, Université Paris-Saclay UVSQ, for our next webinar on mixed precision and VerifiCarlo!

    In this webinar, we will introduce Verificarlo, showcase its backends for numerical bug detection and mixed-precision analysis, and present a success story highlighting the road from analysis of codes with Verificarlo to reliable mixed-precision codes.

  • Calibration of Analytical Suction Bucket Installation Models Using Grain-Scale LBM-DEM Simulations

    Suction bucket foundations offer significant advantages for offshore wind applications, enabling fast and cost-efficient installation. However, installation failures due to piping erosion remain a critical challenge, particularly in loose or highly permeable seabeds. Understanding the interplay between seepage flow, soil properties, and foundation geometry during suction installation is essential for improving design guidelines and installation strategies. In this talk, Samuel Kemmler presents results that illustrate how fully resolved LBM-DEM modeling can complement experimental and field studies, providing a powerful tool for developing more robust suction bucket installation strategies in challenging seabed conditions.