4th Annual Meeting of EUROfusion HPC ACHs

27 Oct 2026, 09:00 → 28 Oct 2026, 16:20 Europe/Berlin

Building D2, room 436 (seminar room, last floor) (Garching, Germany)

Gilles Fourestey (EPFL), Mervi Mantsinen (CIEMAT), Roman Hatzky (IPP)

Agenda_4th_ACH-HPC_Annual_Meeting_Oct27_28_v3.pdf

Tuesday 27 October

09:00 → 09:10 Welcome

Speaker: Roman Hatzky (IPP)

09:10 → 09:20 Report of Team Leader ACH-EPFL

Speaker: Gilles Fourestey (EPFL)

09:20 → 11:00 Reports from ACH-EPFL members

Convener: Gilles Fourestey (EPFL)

09:20 Soledge3X Code Optimization and GPU Production Computing for the WEST Tokamak

Speaker: Mathieu Peybernes (EPFL)

09:45 Improvements for Vlasov Kernel in GENEX

Speaker: Piyush Panchal (EPFL)

10:10 Gysela-X++

Speaker: Emily Bourne (EPFL)

10:35 Fusion Digital Twin

Speaker: Florian Cabot (EPFL)

11:00 → 11:20 Coffee Break

11:20 → 12:35 Reports from ACH-EPFL members cont.

11:20 Implicit Solver Performance: Bottlenecks and Optimizations in GBS and Beyond Compute: Communication Profiling and Optimization in FELTOR

Speaker: Nicola Varini (EPFL)

11:45 ASCOT6-GPU physics improvements

Speaker: Gilles Fourestey (EPFL)

12:10 LINDNES and SPECTER

Speaker: Emmanuel Lanti (EPFL)

12:35 → 14:00 Lunch

14:00 → 14:10 Report of Team Leader ACH-BSC/CIEMAT

Speaker: Mervi Mantsinen (CIEMAT)

14:10 → 15:25 Reports from ACH-CIEMAT members

Convener: Mervi Mantsinen (CIEMAT)

14:10 ACH-BSC work over XTAPAS, Alya and SPICE2 code during 2026

Speaker: Alejandro Soba (BSC)

14:35 Enabling Exascale GPU Performance for Fusion Edge Modeling Codes

Speaker: Manuel Augusto Maidana Silanes (CIEMAT)

15:00 Progress on BIT1 GPU Porting

Speaker: Xavier Saez (CIEMAT)

15:25 → 15:45 Coffee Break

15:45 → 17:00 Reports from ACH-CIEMAT members cont.

Convener: Mervi Mantsinen (CIEMAT)

15:45 Progress report on work done with CARIDDI and JOREK-DREAM

Speaker: Federico Cipolletta (CIEMAT - BSC)

16:10 Continuous performance monitoring for STELLA

Speaker: Joan Vinyals Ylla Catala (BSC)

16:35 Hybrid Parallelization in SOLPS-ITER, (Zoom)

Speaker: Gaurav Saxena (CIEMAT)

18:00 → 20:00 Meeting Dinner* (Gasthof Neuwirt, Münchener Str. 10, 85748 Garching bei München)

Each participant is responsible for covering his/her own costs.

Wednesday 28 October

09:00 → 09:10 Report of Team Leader ACH-MPG

Speaker: Roman Hatzky (IPP)

09:10 → 10:25 Reports from ACH-MPG members

Convener: Roman Hatzky (IPP)

09:10 Progress report on OpenMP offloading in ORB5

Speaker: Ville-Markus Yli-Suutala (VTT)

09:35 Progress in porting domain-decomposed Monte Carlo to GPUs

Speaker: Oskar Lappi (VTT)

10:00 Acceleration of GrilliX timestep and optimization of GEMPICX

Speaker: Cristian Lalescu (IPP)

10:25 → 10:45 Coffee Break

10:45 → 11:35 Reports from ACH-MPG members cont.

Convener: Roman Hatzky (IPP)

10:45 Multi regions-of-interest (ROI) in REFMUL3

Speaker: Tiago Ribeiro (IPP)

11:10 Benchmarks and validation of the Pitagora HPC system

Speaker: Serhiy Mochalskyy (IPP)

11:35 → 12:30 ASDEX Upgrade tour

12:30 → 14:00 Lunch

14:00 → 14:40 Discussion of relevant topics

Convener: Mervi Mantsinen (CIEMAT)

14:00 Experiences with the Pitagora HPC system

14:20 News from E-TASC General meeting

14:40 → 15:00 Organisational issues

14:40 Next meeting

14:50 AOB

15:00 → 15:01 End of meeting