Until recent years, linear algebra solvers were predominantly operating with double precision or binary64. With the advent of AI, in particular deep learning, lower floating-point precisions formats were introduced to accommodate the need of such computations; now the spectrum is shifted to fixed point and integer arithmetic, expanding to block floating point arithmetic. This change […]
Join us for our first annual community workshop! The energy consumption constraint for large-scale computing encourages scientists to revise the architecture design of hardware but also applications, algorithms, as well as the underlying working/ storage precision. The main aim is to make the computations energy-efficient (aka sustainable) and robust numerically but also in terms of fault tolerance. On the level of algorithmic solutions, we propose to utilize all provided resources wisely by exhibiting algorithms to computation overlapping but even more communication overlapping strategies. We also promote mixed-precision strategies with the aid of computer arithmetic tools like VerifiCarlo and its variable precision backend. Hence, before lowering precision, one must ensure that the simulation is numerically correct, e.g. by relying on alternative floating-point models/ rounding to pinpoint numerical bugs and to estimate the accuracy. We also work on fault tolerant and resilient algorithms, adaptivity and meshing/ mesh refinement that adapt to the heterogeneous nature of current machines. Another issue discussed in the workshop is the adaptation of adjoint-based topology optimization methods to spectral-element CFD codes. Therefore, in this workshop, we will share our approaches, lessons learnt with preliminary results, and outline perspectives for the upcoming three years of the project.
CI/CD has revolutionized software development practices by offering streamlined workflows that enhance productivity, reliability, and agility in delivering software products. This workshop delves into the adaptation of CI/CD methodologies to HPC environments and aims to equip participants with the knowledge and skills to leverage CI/CD practices effectively on a test cluster and then visualise the results. By the end of the workshop, participants will be equipped with the expertise to implement CI/CD workflows effectively on supercomputers.
Join our own Susanne Malheiros for her presentation “Scientific Visualization for Exascale Simulations” at HiPEAC25!
Part 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.
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.
In this hands-on two-hour workshop, you’ll 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’ll have the opportunity to apply your knowledge and create your own visualization.
How can highly complex simulation results be turned into compelling stories that empower both researchers and their audiences?
This workshop introduces Vistle, an open-source visualization tool designed to embed scientific data into immersive virtual reality environments. Drawing on real examples from the “Center of Excellence for Computational Fluid Dynamics” (CEEC) project, the session offers a behind-the-scenes look at how Vistle was used to visualise large-scale CFD simulation results in virtual reality, first prototyping on a laptop and then scaling up to a computing cluster. Through lecture-style segments and live demonstrations, participants will learn how to create their own interactive visualization pipelines, adjust parameters on the fly, and customise workflows for their research.
Since 2023, the Center of Excellence in Exascale CFD (CEEC) has worked to make high-fidelity CFD ready for Europe’s exascale systems. Its work has been driven by six lighthouse cases, addressing challenges from aeronautics, offshore energy, process engineering, shipping, and atmospheric flows, chosen to push physics and software to their limits. This community workshop presents what those cases have delivered, and is meant for CFD practitioners, code developers, HPC centers and industry users who want to see what exascale CFD delivers today, and where it goes next.