BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CEEC CoE - ECPv6.15.20//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:CEEC CoE X-ORIGINAL-URL:https://ceec-coe.eu X-WR-CALDESC:Events for CEEC CoE REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:Europe/Paris BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20230326T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20231029T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20240331T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20241027T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20250330T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20251026T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20260329T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20261025T010000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:20270328T010000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:20271031T010000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20240902T000000 DTEND;TZID=Europe/Paris:20240903T235959 DTSTAMP:20260414T225144 CREATED:20240605T090813Z LAST-MODIFIED:20240903T081621Z UID:921-1725235200-1725407999@ceec-coe.eu SUMMARY:Mini-Symposium 4: Modernizing CFD: Exploring CI/CD for Improved Software Development Life Cycle DESCRIPTION:Join CEEC at the 35th Parallel CFD International Conference 2024 this fall in Bonn\, Germany. \nIn the Mini-Symposium 4: Modernizing CFD: Exploring CI/CD for Improved Software Development Life Cycle\, CEEC will be joined by sister European Centers of Excellence EXCELLERAT P2\, EOCOE3\, and HIDALGO 2 supported by the coordination activity CASTIEL 2. This symposium will focus on the role of Continuous Integration/Continuous Deployment (CI/CD) in guaranteeing CFD simulation applications’ stability\, reproducibility\, portability\, and performance. URL:https://ceec-coe.eu/event/mini-symposium-4-modernizing-cfd-exploring-ci-cd-for-improved-software-development-life-cycle/ LOCATION:Universitätsclub Bonn e.V.\, Konviktstr.9\, Bonn\, 53113\, Germany CATEGORIES:mini-symposium END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20240903T165000 DTEND;TZID=Europe/Paris:20240903T171000 DTSTAMP:20260414T225144 CREATED:20240903T082639Z LAST-MODIFIED:20240903T082759Z UID:1066-1725382200-1725383400@ceec-coe.eu SUMMARY:A continuous benchmarking pipeline for performance engineering on different architectures for the waLBerla framework DESCRIPTION:Come listen to our own Kajol Kulkarni presenting in mini-symposium 4 at parCFD on our work with benchmarking of waLBerla. URL:https://ceec-coe.eu/event/a-continuous-benchmarking-pipeline-for-performance-engineering-on-different-architectures-for-the-walberla-framework/ LOCATION:Universitätsclub Bonn e.V.\, Konviktstr.9\, Bonn\, 53113\, Germany CATEGORIES:mini-symposium END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20240903T181500 DTEND;TZID=Europe/Paris:20240903T190000 DTSTAMP:20260414T225144 CREATED:20240605T092248Z LAST-MODIFIED:20240903T081225Z UID:923-1725387300-1725390000@ceec-coe.eu SUMMARY:Keynote Lecture at parCFD DESCRIPTION:Join our own Niclas Jansson for his keynote lecture as an invited speaker at the 35th Parallel CFD International Conference 2024 in Bonn\, Germany. URL:https://ceec-coe.eu/event/keynote-lecture-at-parcfd/ LOCATION:Universitätsclub Bonn e.V.\, Konviktstr.9\, Bonn\, 53113\, Germany CATEGORIES:Conference END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20240909T120500 DTEND;TZID=Europe/Paris:20240909T122500 DTSTAMP:20260414T225144 CREATED:20240905T131604Z LAST-MODIFIED:20240905T135557Z UID:1077-1725883500-1725884700@ceec-coe.eu SUMMARY:'Enabling mixed-precision with the help of tools: A Nekbone case study' at PPAM24 DESCRIPTION: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 URL:https://ceec-coe.eu/event/enabling-mixed-precision-with-the-help-of-tools-a-nekbone-case-study-at-ppam24/ LOCATION:Ostrava\, Czechia\, Ostrava\, Czech Republic CATEGORIES:Conference END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240916 DTEND;VALUE=DATE:20240921 DTSTAMP:20260414T225144 CREATED:20240605T095852Z LAST-MODIFIED:20240605T100010Z UID:925-1726444800-1726876799@ceec-coe.eu SUMMARY:Introduction to Computational Fluid Dynamics DESCRIPTION:Join our Anna Schwarz as one of the instructors for the reoccuring “Introduction to Computational Fluid Dynamics” course organized by HLRS\, IAG (University of Stuttgart) and the\nInstitute of Software Methods for Product Virtualisation (DLR). URL:https://ceec-coe.eu/event/introduction-to-computational-fluid-dynamics/ LOCATION:HLRS University of Stuttgart\, Nobelstraße 19\, Stuttgart\, 70569\, Germany CATEGORIES:Training END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20241030T110000 DTEND;TZID=Europe/Paris:20241030T120000 DTSTAMP:20260414T225144 CREATED:20241018T092318Z LAST-MODIFIED:20241022T131330Z UID:1129-1730286000-1730289600@ceec-coe.eu SUMMARY:FLEXI/GALÆXI: Open-Source Solver for Multiscale Flows DESCRIPTION:Join us for the 11th CASTIEL Code of the Month to learn about FLEXI/GALÆXI! \nIn the field of computational fluid dynamics (CFD)\, high-order methods have reached a certain level of maturity for the solution of unsteady multiscale problems\, of which turbulence is a prime example. For these types of problems\, high-order schemes have proven to be efficient alternatives to more traditional numerical schemes. Among the high-order discretization variants\, the discontinuous Galerkin method offers a collection of features which increased its popularity. In order to take full advantage of the potential benefits of these methods\, all steps in the simulation chain\, from pre- to post-processing\, must be designed and executed with high-order in mind.\nIn this talk\, we will present the open-source CFD frameworks FLEXI/GALÆXI\, which are continuously developed by the Numerics Research Group of Prof. Andrea Beck at the Institute of Aerodynamics and Gas Dynamics at the University of Stuttgart. Both solvers provide a high-order consistent simulation tool chain for solving the compressible Navier–Stokes equations in a highly efficient\, accurate and robust manner in a high performance computing setting either on CPU-based systems (FLEXI) or GPUaccelerated clusters (GALÆXI). The talk commences with a description of the numerical algorithms and implementation details\, accompanied by an outline of the features and capabilities of all parts of the framework. In addition to these technical details\, we also discuss the significant issues of code stability\, reproducibility and user-friendliness. The advantages gained by developing an open-source framework are addressed\, with a particular focus on usability for the open-source community. We conclude with application examples that demonstrate the wide range of use cases and the extensibility of FLEXI\, as well as an overview of current and future developments. \nRegistration:\nhttps://forms.office.com/e/P4Kr9xweRN URL:https://ceec-coe.eu/event/flexi-galaexi-open-source-solver-for-multiscale-flows/ CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2024/10/CEEC-FLEXI-PublicCodeofTheMonth_graphs2-e1729602796118.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20241113T150000 DTEND;TZID=Europe/Paris:20241113T160000 DTSTAMP:20260414T225144 CREATED:20241018T102838Z LAST-MODIFIED:20241115T103832Z UID:1120-1731510000-1731513600@ceec-coe.eu SUMMARY:Introduction to the DLB Library DESCRIPTION:The Dynamic Load Balancing library is a runtime library that offers different capabilities to HPC users. It consists of three different modules that work collaboratively and independently:\n• Lend When Idle (LeWI): Offers a transparent load balancing mechanism for hybrid applications (MPI + OpenMP)\n• Tracking Application Life Performance (TALP): Collects performance metrics at runtime\, offering a transparent and lightweight tool to measure the parallel and computational efficiency of your code. Metrics can be collected during runtime\, offering the possibility of dynamic adaptation.\n• Dynamic Resource Ownership Management: Provides a mechanism to change the amount of computational resources used by the different processes at runtime without stopping the application.\nIn this tutorial we will provide an overview of the DLB library and each one of its modules. For each module we will share its main features\, how to use it\, and some success stories. URL:https://ceec-coe.eu/event/introduction-to-the-dlb-library/ LOCATION:Online CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2024/10/Poster.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20241215T000000 DTEND;TZID=Europe/Paris:20241215T235959 DTSTAMP:20260414T225144 CREATED:20241024T121556Z LAST-MODIFIED:20241115T103716Z UID:1143-1734220800-1734307199@ceec-coe.eu SUMMARY:Call for Abstracts! High-fidelity CFD with application in ship hydrodynamics DESCRIPTION:Submit your abstract to our invited session at Marine 2025!! \nThe session titled “High-fidelity CFD with application in ship hydrodynamics” is seeking submissions by December 15th\, 2024. Full details and guidelines for submission are available in the proposal . \nYou can also check out the invited session’s page on the conference website. URL:https://ceec-coe.eu/event/call-for-abstracts-high-fidelity-cfd-with-application-in-ship-hydrodyamics/ CATEGORIES:OpenCall ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2024/10/ceec_CallForAbstracts-with-numbers_v2-1-e1729843076883.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20241216T110000 DTEND;TZID=Europe/Paris:20241216T120000 DTSTAMP:20260414T225144 CREATED:20241115T145729Z LAST-MODIFIED:20241219T185747Z UID:1203-1734346800-1734350400@ceec-coe.eu SUMMARY:Programming complex workflows with PyCOMPSs DESCRIPTION:Programming large-scale systems poses several challenges to scientific application developers. Systems are growing in complexity\, and concurrency is not the only difficulty that programmers face. They also contend with the distribution of memory spaces\, complex architectures\, new storage technology\, etc. Task-based programming models have proven to be a good alternative to traditional programming models for HPC. PyCOMPSs is a pioneering approach to task-based programming in Python that enables codes to be executed in distributed computing platforms. In particular\, PyCOMPSs supports different types of tasks\, such as parallel simulations (MPI)\, artificial intelligence\, or data analytics. This webinar will give an overview of PyCOMPSs illustrated with examples in development at BSC that include CFD simulations with AI training or real-time visualization in the same workflow. URL:https://ceec-coe.eu/event/programming-complex-workflows-with-pycompss/ LOCATION:Online CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2024/11/Event-Poster-e1731686061722.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250120T123000 DTEND;TZID=Europe/Paris:20250120T125000 DTSTAMP:20260414T225144 CREATED:20250117T150621Z LAST-MODIFIED:20250117T161323Z UID:1336-1737376200-1737377400@ceec-coe.eu SUMMARY:Scientific Visualization for Exascale Simulations DESCRIPTION:Join our own Susanne Malheiros for her presentation “Scientific Visualization for Exascale Simulations” at HiPEAC25! \nPart of the workshop “From petascale to exascale and beyond: the Centres of Excellence challenge”\, Susanne will present her work on visualizing exascale CFD and multi-physics simulations like our Localized Erosion of Wind Turbine foundations lighthouse case. URL:https://ceec-coe.eu/event/from-petascale-to-exascale-and-beyond-the-centres-of-excellence-challenge/ LOCATION:Room 9 CATEGORIES:Workshop END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250122T100000 DTEND;TZID=Europe/Paris:20250122T102000 DTSTAMP:20260414T225144 CREATED:20250117T160440Z LAST-MODIFIED:20250121T154826Z UID:1342-1737540000-1737541200@ceec-coe.eu SUMMARY:Exploring quantum computing in CoEs DESCRIPTION:Join our Pratibha Raghupati to learn about her experience exploring the potential of quantum in the context of work being done by the European HPC Centers of Excellence! \nPart of the workshop “Tackling software exascale challenges: the Centres of Excellence in High Performance Computing perspective”\, she will present the potential impact of quantum in the context of exascale CFD simulations we’re working on in CEEC. URL:https://ceec-coe.eu/event/exploring-quantum-computing-in-coes/ LOCATION:Room 9 END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250122T140000 DTEND;TZID=Europe/Paris:20250122T142000 DTSTAMP:20260414T225144 CREATED:20250117T151553Z LAST-MODIFIED:20250120T085109Z UID:1339-1737554400-1737555600@ceec-coe.eu SUMMARY:GALEXI: Scale-resolving simulations of compressible turbulence on GPU-accelerated systems DESCRIPTION:Joine our Anna Schwarz for her talk “GALEXI: Scale-resolving simulations of compressible turbulence on GPU-accelerated systems”\, part of the workshop “Tackling Software Exascale Challenges: the Centres of Excellence in High-Performance Computing Perspective”. She will present GALEXI\, the GPU version of FLEXI\, and the grogress she’s made in CEEC preparing these codes for exascale CFD simulations. URL:https://ceec-coe.eu/event/tackling-software-exascale-challenges-the-centres-of-excellence-in-high-performance-computing-perspective/ LOCATION:Room 9 CATEGORIES:Workshop END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250129T100000 DTEND;TZID=Europe/Paris:20250129T110000 DTSTAMP:20260414T225144 CREATED:20241121T105419Z LAST-MODIFIED:20250205T165517Z UID:1236-1738144800-1738148400@ceec-coe.eu SUMMARY:Vistle Part I: An Introduction to Immersive Visualizations of Large-Scale Scientific Data DESCRIPTION:Save the date for our next webinar! \nThis one-hour webinar introduces the visualization tool Vistle\, which is used to create augmented reality/virtual reality visualizations of large-scale scientific datasets. It presents Vistle’s remote rendering functionality and how Vistle is being ported to GPUs as part of the CEEC project to enable visualization for exascale datasets. \nAgenda\n\nIntroducing Vistle\n\nExamples of Immersive Visualizations\nThe Visualization Pipeline\n\nPreparing Vistle for the Exascale Era\n\nHybrid Remote Rendering\nAdding GPU support with VTK-m URL:https://ceec-coe.eu/event/vistle-part-i-an-introduction-to-immersive-visualizations-of-large-scale-scientific-data/ CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2024/11/VistleEvent-Poster-1-e1736791803437.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250303T104500 DTEND;TZID=Europe/Paris:20250303T110000 DTSTAMP:20260414T225144 CREATED:20250131T145114Z LAST-MODIFIED:20250131T145202Z UID:1400-1740998700-1740999600@ceec-coe.eu SUMMARY:Neko: A Modern\, Portable\, and Scalable Framework for Extreme-Scale Computational Fluid Dynamics DESCRIPTION:Join our own Niclas Jansson at the SIAM Conference on Computational Science and Engineering (CSE25) in Fort Worth\, Texas\, for his talk “Neko: A Modern\, Portable\, and Scalable Framework for Extreme-Scale Computational Fluid Dynamics” in the mini-symposium MS19: Performance Benchmarking of Scientific Libraries and Applications. \nRecent trends and advancements in utilizing more diverse and heterogeneous hardware in High-Performance Computing (HPC) are challenging scientific software developers in their pursuit of efficient numerical methods with sustained performance across a diverse set of platforms. As a result\, researchers are bing forced to refactor their codes to leverage these powerful new heterogeneous systems. We present our work on addressing the extreme-scale computing challenges in computational fluid dynamics\, ensuring exascale readiness of turbulence simulations. Focusing on Neko\, a high-fidelity spectral element code\, we outline the optimisation and algorithmic work necessary to ensure scalability and performance portability across a wide range of platforms. Finally\, we present performance measurements on a wide range of accelerated computing platforms\, including the EuroHPC pre-exascale systems LUMI and Leonardo\, where Neko achieves excellent parallel efficiency for an extreme-scale direct numerical simulation (DNS) of turbulent thermal convection using up to 80% of the entire LUMI supercomputer. URL:https://ceec-coe.eu/event/neko-a-modern-portable-and-scalable-framework-for-extreme-scale-computational-fluid-dynamics-2/ END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250304T100000 DTEND;TZID=Europe/Paris:20250304T110000 DTSTAMP:20260414T225144 CREATED:20250131T100308Z LAST-MODIFIED:20250306T103825Z UID:1392-1741082400-1741086000@ceec-coe.eu SUMMARY:Enabling mixed-precision with VerifiCarlo: Sharing CEEC experience DESCRIPTION:Join our own Roman Iakymchuk\, Umeå University on behalf of CEEC\, and Pablo de Oliveira Castro\, Université Paris-Saclay UVSQ\, for the next in our webinar series this time on mixed precision and VerifiCarlo! \nDriven by the increasing need to reduce the energy consumption of computing centers and simulations\, scientists have begun revising applications\, algorithms\, and their underlying working/storage precision not just for performance but also for energy efficiency. The goal is to make computational costs sustainable while adhering to the lagom principle—using precision that is “just right” to balance accuracy with efficiency. \nHowever\, before lowering precision\, one must ensure that the simulation is numerically correct. Verificarlo is an open-source framework designed to verify and optimize numerical accuracy in complex programs. Built on the LLVM infrastructure\, it provides various floating-point backends to simulate the effects of numerical errors and lower precision. By leveraging alternative floating-point models\, such as Stochastic Rounding\, Verificarlo pinpoints numerical bugs in simulation codes. A probabilistic definition of the number of significant digits allows us to estimate computational accuracy accurately. \nThrough its variable precision backend\, Verificarlo enables one to explore the trade-offs between precision and performance by simulating lower precisions in software. It identifies specific code regions that benefit from reduced floating-point formats without sacrificing numerical correctness. This approach has been successfully applied in high-performance computing (HPC) domains such as neuroimaging pipelines\, DFT quantum mechanical modeling\, structural simulations\, and now CFD. \nIn 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. URL:https://ceec-coe.eu/event/enabling-mixed-precision-with-verificarlo-sharing-ceec-experience/ CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2025/01/VerifiCarloEvent-Poster-e1738823803408.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250521T150000 DTEND;TZID=Europe/Paris:20250521T170000 DTSTAMP:20260414T225144 CREATED:20250312T133927Z LAST-MODIFIED:20250522T110848Z UID:1458-1747839600-1747846800@ceec-coe.eu SUMMARY:3rd CEEC Community Workshop - Vistle Part II: Hands-On Workshop for 3D Data Visualization DESCRIPTION:Join us for Part II of our Vistle series on site in Stuttgart! \nIn this hands-on two-hour workshop\, you will get to know Vistle\, a powerful open-source visualization tool\, and learn how to create compelling 3D representations of scientific datasets\, both in desktop as well as Virtual Reality environments. After an introduction to the software and its key features\, you will have the opportunity to apply your knowledge and create your own visualization. \nThe workshop will be held on-site in Stuttgart at HLRS\, the High-Performance Computing Center Stuttgart. For information on reaching HLRS and where to stay\, please see the HLRS contact us page. \nCheck-in is available starting at 14:00 CEST including a tour of the HLRS CAVE. The workshop then begins at 15:00 CEST. \nFor any other questions about the workshop\, please contact us! URL:https://ceec-coe.eu/event/3rd-ceec-community-workshop-vistle-part-ii-hands-on-workshop-for-3d-data-visualization/ LOCATION:HLRS University of Stuttgart\, Nobelstraße 19\, Stuttgart\, 70569\, Germany CATEGORIES:Training,Workshop ATTACH;FMTTYPE=image/jpeg:https://ceec-coe.eu/wp-content/uploads/2025/03/postkarte-scaled-e1741705287514.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250610T150000 DTEND;TZID=Europe/Paris:20250612T160000 DTSTAMP:20260414T225144 CREATED:20250610T084324Z LAST-MODIFIED:20250610T084324Z UID:1583-1749567600-1749744000@ceec-coe.eu SUMMARY:Mixed-Precision and Energy-Efficient Computations DESCRIPTION:As supercomputers get bigger\, they become both more capable of solving complex problems and consuming enormous amounts of energy. To ensure their sustainability\, we must start focusing on reducing energy-to-solution at least as much as we focus on reducing time-to-solution. One of the ways CEEC is working on this is using mixed precision. \nJoin Yanxiang Chen at ISC in the Foyer D-G – on the 2nd floor to learn about our latest work reducing precision and energy consumption without compromising accuracy. URL:https://ceec-coe.eu/event/mixed-precision-and-energy-efficient-computations/ CATEGORIES:Poster END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250611T130000 DTEND;TZID=Europe/Paris:20250611T132000 DTSTAMP:20260414T225144 CREATED:20250605T150437Z LAST-MODIFIED:20250605T150437Z UID:1580-1749646800-1749648000@ceec-coe.eu SUMMARY:CEEC at ISC25 DESCRIPTION:Join our own Niclas Jansson at the Euro HPC JU booth for a presentation on our project and progress so far! URL:https://ceec-coe.eu/event/ceec-at-isc25/ CATEGORIES:Conference END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250611T133000 DTEND;TZID=Europe/Paris:20250611T141500 DTSTAMP:20260414T225144 CREATED:20250610T124216Z LAST-MODIFIED:20250610T124216Z UID:1585-1749648600-1749651300@ceec-coe.eu SUMMARY:RESEARCH POSTER PITCH with Yanxiang Chen DESCRIPTION: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. \nIf 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 poster pitch ! \nYanxiang will present and answer questions about his poster Mixed-Precision and Energy-Efficient Computations. URL:https://ceec-coe.eu/event/research-poster-pitch-with-yanxiang-chen/ CATEGORIES:Poster END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250701T000000 DTEND;TZID=Europe/Paris:20250705T000000 DTSTAMP:20260414T225144 CREATED:20250506T131441Z LAST-MODIFIED:20250506T131441Z UID:1541-1751328000-1751673600@ceec-coe.eu SUMMARY:Fully-resolved LBM-DEM simulations of piping erosion during a suction bucket installation DESCRIPTION:Join our Samuel kemmler in Himeji\, Japan for the 10th International Conference on Discrete Element Methods (DEM10) this summer! \nSuction bucket foundations are a cost-efficient and environmentally sustainable solution to install offshore wind turbines\, achieved through the application of growing suction pressure inside the bucket until its full embedment into the seabed. A key challenge for the installation process is the occurrence of piping erosion\, a phenomenon where fluidization of particles beneath the bucket wall tip causes a drop in suction pressure\, potentially leading to installation failure. Despite its significance\, the complex physical mechanisms driving piping erosion remain insufficiently understood. To address this knowledge gap\, a three-dimensional\, fully-resolved coupled LBM-DEM simulation is employed to conduct an in-depth analysis of piping erosion\, aiming to identify key influencing parameters\, thus enhancing understanding and optimizing the installation process. The simulation of physically relevant problem sizes – comprising hundreds of thousands of grains – is equivalent to computational intensities which demand for extensive computational resources. Results from simulations executed on hundreds of GPUs on the LUMI supercomputer are presented\, illustrating the method’s capability to tackle this complex challenge. URL:https://ceec-coe.eu/event/fully-resolved-lbm-dem-simulations-of-piping-erosion-during-a-suction-bucket-installation/ LOCATION:Arcrea HIMEJI\, 143-2\, Kamiyacho\, Himeji-City\, Hyogo\, 670-0836\, Japan END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250827T162000 DTEND;TZID=Europe/Paris:20250827T164000 DTSTAMP:20260414T225144 CREATED:20250826T092550Z LAST-MODIFIED:20250826T092550Z UID:1706-1756311600-1756312800@ceec-coe.eu SUMMARY:FLEXI: Scale-resolving simulations of compressible turbulence on modern HPC systems DESCRIPTION:Join our own Anna Schwarz for the WHPC Europa invited session discussing our latest work preparing FLEXI for exascale and GPU-based systems. \nAbstract\nThe application of scale-resolving simulations such as LES and DNS remains challenging in numerous engineering applications due to the substantial computational demands and the limited available computational resources. It was thoroughly demonstrated in the last decade that high-order numerical methods show significant advantages in terms of computational cost required to achieve a given accuracy for DNS and LES and that they can be implemented efficiently on traditional CPU-based system architectures. However\, the improvements in performance for CPU-based systems has slowed down significantly over the last years. Consequently\, more specialised architectures\, such as GPUs\, have become increasingly popular in the last decade. These architectures still promise considerable performance improvements per generation and thus allow more complex flow cases to be tackled\, while also yielding better performance per invested amount of energy. However\, CPU codes cannot be easily run on GPU hardware\, since they exhibit a distinctly different architecture and require different programming languages. In this talk it is demonstrated how existing codebases can be translated efficiently to GPU hardware\, both in terms of implementation effort and computational performance. For this\, the unstructured DG code FLEXI~\cite{Krais2019\,Kempf2024} is utilized as an example. Finally\, it is shown that FLEXI is capable of tackling challenging large-scale problems with complex geometries on modern HPC systems. URL:https://ceec-coe.eu/event/flexi-scale-resolving-simulations-of-compressible-turbulence-on-modern-hpc-systems/ LOCATION:TUD Dresden University of Technology   Barkhausen-Bau (BAR)\, Georg-Schumann-Str. 13  \, Dresden\, 01069\, Germany CATEGORIES:Conference,InvitedSession END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250827T164000 DTEND;TZID=Europe/Paris:20250827T170000 DTSTAMP:20260414T225144 CREATED:20250826T091453Z LAST-MODIFIED:20250826T091453Z UID:1702-1756312800-1756314000@ceec-coe.eu SUMMARY:Exploring Flow Fields at Scale: GPU-Accelerated Scientific Visualization for Exascale CFD DESCRIPTION:Join our own Susanne Malheiros at the WHPC Europa Invited Session to hear about our latest work on Vistle. \nAbstract:\nThis talk presents the ongoing efforts to port Vistle – a software for creating immersive extended reality visualizations of scientific data – to the GPU by integrating the portable visualization toolkit Viskores. The approach is illustrated by sample computational fluid dynamics (CFD) visualizations of the light-house cases from the Center of Excellence in Exascale CFD (CEEC) project. URL:https://ceec-coe.eu/event/exploring-flow-fields-at-scale-gpu-accelerated-scientific-visualization-for-exascale-cfd/ LOCATION:TUD Dresden University of Technology   Barkhausen-Bau (BAR)\, Georg-Schumann-Str. 13  \, Dresden\, 01069\, Germany CATEGORIES:Conference,InvitedSession END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20250917T150000 DTEND;TZID=Europe/Paris:20250917T160000 DTSTAMP:20260414T225144 CREATED:20250616T143450Z LAST-MODIFIED:20250917T102232Z UID:1589-1758121200-1758124800@ceec-coe.eu SUMMARY:Introduction to the DLB Library and Measuring GPU performance DESCRIPTION:The Dynamic Load Balancing library is a runtime library that offers different capabilities to HPC users. It consists of three different modules that work collaboratively and independently: \n\nLend When Idle (LeWI): Offers a transparent load balancing mechanism for hybrid applications (MPI + OpenMP)\nTracking Application Life Performance (TALP): Collects performance metrics at runtime\, offering a transparent and lightweight tool to measure the parallel and computational efficiency of your code. Metrics can be collected during runtime\, offering the possibility of dynamic adaptation.\nDynamic Resource Ownership Management: Provides a mechanism to change the amount of computational resources used by the different processes at runtime without stopping the application.\n\nIn this webinar we’ll provide an overview of the DLB library and each one of its modules. For each module we’ll share its main features\, how to use it\, and some success stories. We’ll put special focus on the TALP module and its recent extension to provide GPU metrics when getting performance measurements. URL:https://ceec-coe.eu/event/introduction-to-the-dlb-library-and-measuring-gpu-performance/ LOCATION:Online CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2025/06/DLB2PosterDraft_V2-e1750084415957.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20251009T121000 DTEND;TZID=Europe/Paris:20251009T143000 DTSTAMP:20260414T225144 CREATED:20251008T140057Z LAST-MODIFIED:20251008T140057Z UID:1833-1760011800-1760020200@ceec-coe.eu SUMMARY:Mixed-Precision and Energy-Efficient Computations DESCRIPTION:If you’re at the Workshop on Approximate Computing in Numerical Linear Algebra in Paris this week\, don’t miss Yanxiang Chen’s lunch poster talk on mixed precision and energy efficient computations! \nAbstract: High Performance Computing has traditionally focused on optimizing between memory usage\, arithmetic intensity\, parallelism\, and communication costs. However\, as simulations grow\, energy consumption has surged\, presenting significant sustainability challenges for large-scale computing infrastructures. Addressing these challenges requires innovative strategies that enhance energy efficiency without compromising computational accuracy or performance.\nWe present a systematic methodology for reducing the energy footprint of large-scale simulations via mixed-precision computing\, without compromising accuracy or performance. Our approach combines performance profiling with numerical sensitivity analysis to identify precision-insensitive code regions\, select promising candidates\, and gradually convert them to lower precision. Applied to representative high-performance computing kernels\, this strategy yields up to 40% speedup and 47% energy savings in an implicit Poisson solver\, and roughly 30% gains in both execution time and energy consumption in explicit solvers\, all while preserving double-precision level accuracy. These results demonstrate that our methodology provides a versatile and effective lever for enhancing the sustainability of HPC applications. URL:https://ceec-coe.eu/event/mixed-precision-and-energy-efficient-computations-2/ CATEGORIES:Conference END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20251009T155000 DTEND;TZID=Europe/Paris:20251009T161000 DTSTAMP:20260414T225144 CREATED:20251008T135146Z LAST-MODIFIED:20251008T135146Z UID:1831-1760025000-1760026200@ceec-coe.eu SUMMARY:Mixed-Precision Strategies in Spectral Element Codes: Accuracy-Aware Approximation for Energy-Efficient Simulations DESCRIPTION:If you’re at the Workshop on Approximate Computing in Numerical Linear Algebra in Paris this week\, chec out Roman Iakymchuk’s talk on mixed-precision strategies in spectral element codes on Thursday! \nAbstract: Approximate computing via mixed precision arithmetic offers a promising path to energy-efficient high-performance computing. However\, identifying where and how to apply reduced precision without compromising solution accuracy remains a key challenge in scientific simulations. In this talk\, we present a comprehensive methodology for enabling mixed-precision in spectral element codes using floating-point analysis tools\, roofline modeling\, and empirical verification. We apply our strategy to Nekbone and Neko—two fluid dynamics solvers—by combining reduced-precision iterative solvers with double-precision critical operations such as dot products and global communications. Our method is supported by Verificarlo’s Monte Carlo arithmetic and precision emulation\, which help detect numerically stable kernels for approximation. The resulting mixed-precision versions deliver up to 2.38x faster time-to-solution and 2.8× lower energy-to-solution\, while retaining double-precision-level accuracy. This work highlights a practical\, accuracy-aware approach to integrating approximation into large-scale legacy applications\, making them fit for future exascale platforms. URL:https://ceec-coe.eu/event/mixed-precision-strategies-in-spectral-element-codes-accuracy-aware-approximation-for-energy-efficient-simulations/ CATEGORIES:Conference END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20251022T140000 DTEND;TZID=Europe/Paris:20251022T150000 DTSTAMP:20260414T225144 CREATED:20251006T093146Z LAST-MODIFIED:20251021T140651Z UID:1766-1761141600-1761145200@ceec-coe.eu SUMMARY:Extreme-Scale High-Fidelity Computational Fluid Dynamics with Neko DESCRIPTION:Neko is a portable framework for high-order spectral element-based simulations\, mainly focusing on incompressible/compressible flow. The framework is written in a modern object-oriented approach and supports various hardware backends\, ranging across general-purpose processors\, accelerators\, and vector processors. Neko has demonstrated excellent performance and scalability across various hardware architectures and was nominated as a finalist for the ACM Gordon Bell prize in 2023. \nIn this webinar\, we will provide an introduction to Neko and its capabilities\, from installation to creating and running simulations. Special focus will also be on the major changes in terms of features and functionalities\, user interaction\, and improvements made in the upcoming release of Neko v1.0. By the end of the webinar\, attendees will have a basis as well as references and materials to start working with Neko on their own time. URL:https://ceec-coe.eu/event/extreme-scale-high-fidelity-computational-fluid-dynamics-with-neko/ LOCATION:Online ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2025/10/NekoPoster-e1759755285466.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20251126T140000 DTEND;TZID=Europe/Paris:20251126T150000 DTSTAMP:20260414T225144 CREATED:20251020T090851Z LAST-MODIFIED:20251125T081129Z UID:1844-1764165600-1764169200@ceec-coe.eu SUMMARY:Exploring CI/CD Tools and Workflows for Research and HPC Software Projects DESCRIPTION:Continuous Integration and Continuous Deployment (CI/CD) are essential for sustainable and reproducible software development\, yet many projects still lack a structured workflow.\nThis webinar provides a beginner-friendly introduction to CI/CD with a focus on EuroHPC. We will explore why CI/CD matters\, review a selection of tools commonly used or even developed within European projects\, and discuss their strengths\, limitations\, and typical use cases.\nThe goal is to help developers new to CI/CD understand available options and how to choose tools that fit their needs. A short example from the waLBerla project will illustrate how such workflows can be applied in practice. URL:https://ceec-coe.eu/event/exploring-ci-cd-tools-and-workflows-for-research-and-hpc-software-projects/ LOCATION:Online CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2025/10/CI-CDPoster-e1761921989737.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20251209T140000 DTEND;TZID=Europe/Paris:20251209T150000 DTSTAMP:20260414T225144 CREATED:20251020T095113Z LAST-MODIFIED:20251209T100854Z UID:1848-1765288800-1765292400@ceec-coe.eu SUMMARY:Performance Portability for Fortran CFD Software with GALÆXI DESCRIPTION:With GPU acceleration now ubiquitous in HPC\, there is more pressure than ever to port existing simulation software to leverage the new hardware. There are many GPU programming models available\, but they often have limited\, or completely lack\, support for Fortran. This leads owners of existing Fortran scientific codes to struggle with porting their software to multiple computing architectures. One option is to turn to C++ to achieve the greatest performance portability.\nThis webinar is a guide for the process of taking a Fortran CFD code and porting it to GPUs using CUDA/HIP C++. The basics of GPU hardware and programming will be covered\, to serve as a rough guide for adapting algorithms and data structures. The high-order discontinuous Galerkin spectral element CFD code GALÆXI is then presented. The important design questions and porting requirements in GALÆXI are discussed\, which researchers must answer and understand to effectively port their own Fortran codes with CUDA/HIP C++. URL:https://ceec-coe.eu/event/performance-portability-for-fortran-cfd-software-with-galaexi/ LOCATION:Online CATEGORIES:Webinar ATTACH;FMTTYPE=image/png:https://ceec-coe.eu/wp-content/uploads/2025/11/FLEXI2025Poster-e1764062226596.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260128T113000 DTEND;TZID=Europe/Paris:20260128T120000 DTSTAMP:20260414T225144 CREATED:20260126T125309Z LAST-MODIFIED:20260126T125309Z UID:1976-1769599800-1769601600@ceec-coe.eu SUMMARY:Task-decomposed Overlapped Preconditioner for Sustained Strong Scalability on Accelerated Exascale Systems DESCRIPTION:Join Niclas Jannson in Osaka\, Japan at SCA/HPCAsia2026 for his talk on “Task-decomposed Overlapped Preconditioner for Sustained Strong Scalability on Accelerated Exascale Systems.” URL:https://ceec-coe.eu/event/task-decomposed-overlapped-preconditioner-for-sustained-strong-scalability-on-accelerated-exascale-systems/ CATEGORIES:Conference,Paper Talk END:VEVENT BEGIN:VEVENT DTSTART;TZID=Europe/Paris:20260128T120000 DTEND;TZID=Europe/Paris:20260128T123000 DTSTAMP:20260414T225144 CREATED:20260126T131141Z LAST-MODIFIED:20260126T131312Z UID:1978-1769601600-1769603400@ceec-coe.eu SUMMARY:A Matrix-Free Algebraic hp-Multigrid Method for Computational Fluid Dynamics Applications DESCRIPTION:After the talk on preconditioners in Osaka\, Japan at SCA/HPCAsia2026 \, stick with Niclas Jannson for his next talk on “A Matrix-Free Algebraic hp-Multigrid Method for Computational Fluid Dynamics Application.\, a best paper finalist. “ URL:https://ceec-coe.eu/event/a-matrix-free-algebraic-hp-multigrid-method-for-computational-fluid-dynamics-applications/ CATEGORIES:Conference,Paper Talk END:VEVENT END:VCALENDAR