WarmWorld Faster Module Meeting 2025

1 Dec 2025, 12:45 → 3 Dec 2025, 22:00 Europe/Berlin

DWD in Offenbach

Claudia Frauen, Julia Duras (DKRZ)

The WarmWorld Faster Module Meeting 2025 will be held in person at DWD in Offenbach.

The meeting intends to review the current status and recent progress of the Faster module, define the work plan and roadmap for the remainder of the project, and look towards the next phase of WarmWorld.

Participation: The meeting is mainly reserved for WarmWorld Faster colleagues. Registrations will be limited.  The deadline for registration is November 9, 2025.

Location: DWD Headquarter, Frankfurter Straße 135, 63067 Offenbach am Main
https://www.dwd.de/EN/aboutus/locations/headquarters/headquarters_node.html 

Agenda: We have attached a draft agenda but are still waiting for confirmations of some contributions. Also, we might adapt the agenda depending on the outcomes of the ICON Allhands meeting.
 

Information_on_data_processing-WarmWorldFasterDec2025.pdf

Information_zur_Datenverarbeitung-WarmWorldFasterDez2025.pdf

Monday 1 December

Opening

WarmWorld overview and highlights

1 3 Years of WarmWorld Faster - What have we achieved?

Speaker: Claudia Frauen

2 Highlights from WarmWorld Better

Speaker: Corinna Hoose

3 Highlights from WamrWorld Easier

Speaker: Nils Arne Dreier

4 Computing the Full Earth System at 1 km Resolution

Speaker: Daniel Klocke

15:00 Coffee break

WarmWorld Faster updates and work packages

5 Update on Atlas and FESOM

6 ICON single precision

Speaker: Dylan Kierans

7 Update on the ComIn plugin library

Speaker: Florian Prill

Tuesday 2 December

HPC procurement at DKRZ

8 Off-topic: The HPC procurement at DKRZ

Speaker: Hendryk Bockelmann

ICON language interoperability

9 C++/Kokkos rewrite of the ICON aes physics

• Ragnarok - Infrastructure for C++/Kokkos in ICON
• Ragnarok - Contribution guidelines and documentation
• First examples: muphys, tmx, iconmath

10:30 Coffee break

ICON language interoperability

10 OpenICON

Speaker: Matthias Zacharuk

11 ICON language interoperability - discussion

• OpenICON integration with C++/Kokkos rewrite
• Roadmap for new C++ infrastructure
• How to avoid C++/Fortran duplication and return to common infrastructure
• Collection of ideas for a C++/Kokkos hands-on event in March 2026

12:30 Lunch break

ICON language interoperability

12 EXCLAIM

13 Discussion - How to combine EXCLAIM and Faster approaches?

15:00 Coffee break

Breakout groups

Wrap-up discussion

Dinner (self-paid) Ess:zimmer Offenbach

Wednesday 3 December

WarmWorld Faster updates and work packages

14 Update on ICON infrastructure libraries

Speaker: Yen-Chen Chen

ICON and the community and the future role of WarmWorld

15 ICON Open Source Release

Speaker: Uli Schättler

16 ICON documentation, support, and outreach

Speaker: Daniel Rieger

10:30 Coffee break

ICON and the community and the future role of WarmWorld

17 Discussion - The future role of WarmWorld

12:00 Lunch break

WarmWorld Faster extended status report

18 Preparation of the extended status report for WarmWorld Faster