Department of Computer Science

LUMI-G pilot

VISSI project aims to test the scalability of the GPU partition and generate workloads on the GPUs, particularly to stress test the storage systems for stability testing, of the GPU partition of the European pre-Exascale supercomputer LUMI. VISSI-projects brings the modelling of solar fluctuation dynamo to an extreme regime not investigated before.
Turbulence at high Reynolds number in solar-like conditions. Image credit: Jörn Warnecke, MPS
Turbulence at high Reynolds number under solar conditions. Image credit: Jörn Warnecke, MPS

VISSI-project was selected as one of the two Finnish pilots for LUMI-G. This pilot phase aims to test the scalability of the GPU partition and generate workloads on the GPUs, particularly to stress test the storage systems for stability testing. VISSI-project, lead by Maarit Käpylä, aims at investigating solar fluctuating dynamo at extreme parameter regimes not reached before with simulations of 16,000 grid points cubed with the Astaroth-solver developed by the group. The data sizes produced by such simulations exceed hundreds of Terabytes, and pose extreme data analysis challenges.

Link to the multi-node implementation of Astaroth in Parallel Computing

Link to LUMI-consortium news pages

Astroinformatics

Astroinformatics (external link)

Simulations of turbulence and magnetism in astrophysical objects

Aerial photo of Computer Science Building at Aalto University campus

Department of Computer Science

To foster future science and society.

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