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arXiv · 2604.22799

Enabling users to work sustainably on shared institute computing resources

Niclas Eich·Johannes Erdmann·Martin Erdmann·Benjamin Fischer·Paul Gilles·Tim Hauptreif·Jan Kelleter
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Abstract

The VISPA project is a self-managed, mid-scale computing cluster that supports physics data analysis in research and teaching. Because the cluster is housed in a 1970s institute building with limited retrofit options, conventional efficiency upgrades would yield only minor energy savings. We therefore target sustainability primarily through user-centric measures. A monitoring system now records per-job energy consumption, while real-time data on the renewable share of the German power grid enable `green-window' scheduling. Users can query their individual energy consumption and carbon footprints, receive weekly reports, and tag jobs by project for aggregate accounting; memory records from previous runs help avoid oversubscription. All options are voluntary, fostering a cultural shift rather than imposing hard constraints. A simulation framework evaluates the potential impact of these measures. Together, the technological and behavioral interventions aim at medium- to long-term reductions in greenhouse-gas emissions by increasing resource awareness within the scientific community.

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Niclas Eich, Johannes Erdmann, Martin Erdmann, Benjamin Fischer, Paul Gilles, Tim Hauptreif, Jan Kelleter. 2026-04-13. Enabling users to work sustainably on shared institute computing resources. https://arxiv.org/abs/2604.22799

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