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DTSTAMP:20260611T145140Z
LOCATION:Bldg. 8 - Room B 101
DTSTART;TZID=Europe/Stockholm:20260701T090000
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UID:submissions.pasc-conference.org_PASC26_sess155@linklings.com
SUMMARY:MS4G - Julia for HPC: Enabling Co-Design in Scientific Workflows
DESCRIPTION:Organizer(s): Ludovic Räss (University of Lausanne, ETH Zurich
 ), Samuel Omlin (ETH Zurich / CSCS), and Michael Schlottke-Lakemper (Unive
 rsity of Augsburg)\n\nThe fifth instalment of the Julia for HPC PASC minis
 ymposium explores how the Julia language enables co-design to shape scient
 ific workflows that can adapt to rapidly evolving computing architectures.
  As scientific models grow more complex and computing moves toward exascal
 e, building trust in HPC software and results becomes essential. Such trus
 t relies on correctness, reproducibility, and reliable performance across 
 diverse platforms. This minisymposium highlights how Julia and its ecosyst
 em support these goals by fostering close co-design between scientific app
 lications, HPC tools, and emerging hardware and AI technologies. Julia’s s
 ingle-language approach combines ease of use with high performance, allowi
 ng scientists and HPC experts to collaboratively develop, test, and optimi
 se code without separating prototyping from production. A central theme is
  portability across architectures: Julia enables a single codebase to targ
 et CPUs, GPUs, and novel accelerators, as demonstrated by applications suc
 h as Oceananigans.jl and emerging TPU support via Reactant.jl, helping pre
 pare scientific software for future HPC systems. Expert speakers will disc
 uss how Julia enables portable, large-scale Earth system simulations, inte
 grates modern AI compiler technologies, and supports differentiable modell
 ing. The minisymposium targets both experienced Julia users and non-Julia 
 users interested in reproducible and reliable HPC workflows.\n\nMulti-Phys
 ics Geophysical Flow Simulations Using JustRelax.jl\n\nSimulating the soli
 d Earth's thermo-mechanical evolution requires solving coupled, non-linear
  Stokes and heat-diffusion problems across large domains with sharp materi
 al contrasts, complex non-linear visco-elasto-plastic rheologies, and long
  time scales. Traditionally, these simulations run on High-...\n\n\nPascal
  S. Aellig (Johannes Gutenberg University Mainz), Albert de Montserrat (ET
 H Zurich), Ludovic Räss (University of Lausanne), Boris J. P. Kaus (Johann
 es Gutenberg University Mainz), and Christian Schuler (University of Lausa
 nne)\n---------------------\nHierarchical Precision and Recursion for Acce
 lerating Symmetric Linear Solves on MXUs\n\nSymmetric positive-definite sy
 stem solvers based on Cholesky factorization are a critical performance bo
 ttleneck in large scientific workflows, such as climate modeling. Addressi
 ng this demands co-design across algorithms, software abstractions, and em
 erging hardware, particularly as modern AI accel...\n\n\nVicky Carrica (Ma
 ssachusetts Institute of Technology)\n---------------------\nReactant.jl: 
 Optimize Julia Functions for High Performance on CPU, GPU, TPU\n\nScientif
 ic models are today limited by compute resources, forcing approximations d
 riven by feasibility rather than theory. They consequently miss important 
 physical processes and decision-relevant regional details. Advances in AI-
 driven supercomputing — specialized tensor accelerators, AI comp...\n\n\nW
 illiam Moses (University of Illinois Urbana-Champaign; Google)\n----------
 -----------\nOceananigans.jl: GPU-Accelerated Ocean Modeling through Julia
 -Enabled HPC\n\nAccurate ocean modeling is critical for climate projection
 s, yet turbulent motions governing ocean transport remain unresolved in mo
 st climate models, approximated instead through empirical parameterization
 s, a persistent source of bias. Resolving these dynamics globally has been
  computationally out...\n\n\nSimone Silvestri (Politecnico di Torino, Mass
 achusetts Institute of Technology); Gregory Wagner (Aeolus Labs, Massachus
 etts Institute of Technology); Navid Constantinou (University of Melbourne
 ); Valentin Churavy (University of Augsburg); and Raffaele Ferrari (Massac
 husetts Institute of Technology)\n\nDomain: Climate, Weather, and Earth Sc
 iences, Physics, Computational Methods and Applied Mathematics\n\nSession 
 Chairs: Ludovic Raess (University of Lausanne, ETH Zurich) and Samuel Omli
 n (ETH Zurich / CSCS)
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