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DTSTAMP:20260421T090513Z
LOCATION:Bldg. 6 - Room 103
DTSTART;TZID=Europe/Stockholm:20260701T090000
DTEND;TZID=Europe/Stockholm:20260701T110000
UID:submissions.pasc-conference.org_PASC26_sess153@linklings.com
SUMMARY:MS4E - Emerging Paradigms for Performance Portability in Earth-Sys
 tem Modeling
DESCRIPTION:The recent advancements in Earth System Models (ESMs) have ena
 bled simulations at unprecedented resolutions (1-kilometre global and sub-
 kilometre local), pushing the boundaries of forecast quality. However, the
 se simulations demand enormous compute resources, necessitating the larges
 t supercomputers and cutting-edge hardware architectures from various vend
 ors. This has created a significant challenge for ESMs to ensure performan
 ce portability, particularly given the legacy Fortran code bases. To addre
 ss this issue, this mini-symposium brings together invited experts who wil
 l present diverse approaches to achieving performance portability, includi
 ng the utilization of existing portability frameworks, the development of 
 domain-specific languages and compilers, and share their hands-on experien
 ces. By showcasing these innovative solutions, this mini-symposium aims to
  facilitate a comprehensive understanding of the current state-of-the-art 
 and future directions in achieving performance portability for next-genera
 tion ESMs.\n\nICON4Py: an ICON performance portable implementation in pyth
 on using gt4py\n\nICON4Py represents a significant shift in the developmen
 t of the ICON weather and climate modeling framework, transitioning from a
  Fortran codebase to a performance-portable Python implementation. The pro
 ject combines the Python flexibility with the performance required for lar
 ge-scale numerical wea...\n\n\nNicoletta Farabullini (Center for Climate S
 ystems Modeling (C2SM))\n---------------------\nCo-Designing Performance P
 ortability for ICON: An OpenACC to Kokkos Journey\n\nModern heterogeneous 
 HPC systems, which include multi-core CPUs and GPU accelerators from vario
 us vendors, require portability strategies that go beyond single-architect
 ure optimization. This is particularly challenging for large production mo
 dels like ICON, as it requires a careful balancing act be...\n\n\nPradipta
  Samanta (German Climate Computing Centre)\n---------------------\nPutting
  the Exascale in the Energy Exascale Earth System Model\n\nU.S. DOE scient
 ists are porting the Energy Exascale Earth System Model (E3SM) to a perfor
 mance-portable framework capable of efficient execution on emerging exasca
 le architectures. We summarize lessons learned from modernizing the atmosp
 here component, including migrating legacy Fortran to C++ and a...\n\n\nAa
 ron Donahue (Lawrence Livermore National Laboratory)\n--------------------
 -\nPSyclone: A Story of Co-design for Scientific Functionality and Perform
 ance Portability in the Momentum® Modelling Framework\n\nWeather and clima
 te modelling are among the most computationally intensive scientific appli
 cations, requiring exascale computing to significantly improve prediction 
 and projection capabilities. These complex codes are collaboratively devel
 oped across institutions and run on various computing archite...\n\n\nIva 
 Kavcic (Met Office)\n\nDomain: Climate, Weather, and Earth Sciences, Compu
 tational Methods and Applied Mathematics\n\nSession Chairs: Georgiana Mani
 a (DKRZ) and Xavier Lapillonne (MeteoSwiss)
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