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Mr Yishak Tadele Nigatu (University of Trento)5/5/26, 5:15 PMPoster
The increasing power densities of exascale supercomputers require complex cooling infrastructures. ExaDigiT [1] addresses this need by providing a digital twin for liquid-cooled supercomputers through Functional Mock-up Unit (FMU)-based thermo-fluid models. These FMU simulators are accurate but computationally expensive for rapid what-if scenario exploration and Monte Carlo uncertainty...
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Matteo Bunino (CERN)5/5/26, 5:15 PMPoster
In the ODISSEE EC project, we are developing applied-AI capabilities for the LHCb HLT2 data centre to improve energy efficiency and operational reliability, with the longer-term aim of integrating these building blocks into an end-to-end digital twin for computing infrastructure.
In this presentation, we will describe the initial work and architecture around two lines of development. For...
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Michael Philip Sparks (The University of Manchester (GB))5/5/26, 5:15 PMPoster
This contribution introduces CompilePython.com, a community-driven project bootstrapped in February 2026.
Python is widely used in research, but it is often slower than compiled languages such as C++ or Rust. The combination of widespread use and performance leads to a green compute problem. Slower software means more compute time, more energy, and more CO₂.
Compiling Python for...
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Dr Ruben Rodriguez Alvarez (EPFL Embedded Systems Lab), Dr Denisa-Andreea Constantinescu (EPFL Embedded Systems Lab), Dr Miguel PEÓN-QUIRÓS (EcoCloud EPFL)5/5/26, 5:15 PMPoster
IT electricity needs are growing quickly. It is the responsibility of all actors, including the scientific community, to tackle that growth and its associated carbon emissions. In particular, some scientific projects, as is the case of the SKAO, need that their data centers are located physically adjacent to the data production site; in some cases, the electricity consumption of a large HPC...
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Dr Adrian CIOCAN (MAIF, France, La Rochelle University, France), Dr Angela CIOCAN (CERADE, ESAIP, Angers, France, L3i, La Rochelle University, France), Prof. Vincent COURBOULAY (L3i, La Rochelle University, France)5/5/26, 5:15 PMPoster
The rapid diffusion of artificial intelligence (AI) is significantly reshaping the energy profile of modern datacenters. Recent international assessments forecast a sharp rise in electricity demand driven by large-scale inference services and generative models [1]. Yet AI systems continue to be evaluated primarily through algorithmic metrics such as accuracy and latency, while their...
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Hannah Scott (Imperial College London), Jeremy Cohen (Imperial College London)5/5/26, 5:15 PMPoster
A sustainable research computing culture is vital to ensure research institutions can meet their sustainability aims while supporting ever-increasing demands for computational capacity driven by modern research practices. Currently, challenges in three areas make it difficult for sustainability practices to become fully embedded within universities and for a sustainable, responsible research...
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Xavier Eric Ouvrard (EPFL EcoCloud)5/5/26, 5:15 PMPoster
The rapid rise of artificial intelligence and data-intensive workloads has led to a dramatic increase in hardware deployment, energy consumption, and overall carbon footprint. Research computing is not immune to this trend, even when its objectives explicitly target sustainability. At the same time, conventional cloud and high-performance computing (HPC) platforms prioritize production...
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Christophe Farges5/5/26, 5:15 PMPoster
Context. The energy consumption of the IT sector has been steadily increasing for several years and even accelerating, rivaling that of some industrialized countries (equivalent to the United Kingdom in 2022). In the software engineering industry, energy consumption constraints are often neglected during application specification, in favor of immediate requirements such as performance,...
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Dr Xavier Eric Ouvrard (EPFL EcoCloud)5/5/26, 5:15 PMPoster
At EPFL, the EcoCloud research center is at the forefront of both IT for sustainability and sustainability in IT. Among its flagships initiatives, HeatingBits — funded by EPFL Solutions 4 Sustainability— unites six EPFL laboratories and EcoCloud to develop and experimentally validate an holistic approach to datacenter design and operation optimized for minimal carbon footprint and seamless...
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Pascal Emmenegger5/5/26, 5:15 PMPoster
To transmit data, the research computing ecosystem relies on the Internet, an infrastructure that consumes significant resources to maintain and operate. A growing body of work suggests that much of its environmental footprint is “embodied;” that is, arising from hardware manufacturing and material procurement. Yet, when included in assessments, embodied impacts are often treated as constant...
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Nicholas Souter (University of Sussex)5/5/26, 5:15 PMPoster
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Kirsty Pringle5/5/26, 5:15 PMPoster
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Michael Philip Sparks (The University of Manchester (GB))5/5/26, 5:15 PMPoster
This contribution will describe GreenPhysECS, an exploratory project examining whether the Entity–Component–System (ECS) architectural model can make the development of parallel research software more accessible to early-career researcher, particularly in physics.
Highly parallel hardware is now standard, yet building scalable scientific software remains challenging for researchers without...
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Dr Christina Bremer (University of Cambridge)5/5/26, 5:15 PMPoster
Scientific computing comes with significant environmental impacts, including but not limited to energy and water consumption, carbon emissions, and abiotic resource depletion. A potential pathway to reducing these impacts is the use of carbon reporting tools, such as carbon calculators, that quantify and visualise the impacts and can thus enable researchers to make informed, more...
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Maximilian Horzela (Georg August Universitaet Goettingen (DE)), Sebastian Wozniewski (Georg August Universitaet Goettingen (DE))5/5/26, 5:15 PMPoster
On batch systems with many jobs sharing a worker node, the draining of a node in order to terminate it for operational purposes without job abortions leads to idle CPU cores and a loss of compute time.
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This is becoming a prominent issue at German university-based Tier-2 centres, in particular. Towards the High-Luminosity LHC, they are undergoing a transformation and CPU will be provided via... -
Tia Haddad (Kingston University London)5/5/26, 5:15 PMPoster
Sustainable Software Engineering (SSE) seeks to ensure that software systems meet societal and functional demands while minimising environmental impact and resource consumption across their lifecycle. Achieving SSE requires rigorous architectural design, measurable sustainability metrics, and the systematic integration of sustainability principles throughout both development and operation....
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Xavier Eric Ouvrard (EPFL EcoCloud), Dr August Ning (EPFL), Xavier Eric Ouvrard5/5/26, 5:15 PMPoster
The rapid growth of artificial intelligence workloads and data centers has made energy usage a primary design and operational constraint. Beyond minimizing total energy consumption, the industry increasingly requires metrics that reflect how effectively energy is converted into useful computation. Over time, several data center sustainability key performance indicators have emerged addressing...
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Ms Sadie Bartholomew (National Centre for Atmospheric Science and University of Reading)5/5/26, 5:15 PMPoster
Reducing energy consumption is vital for sustainable computing, but the carbon cost of a given workload also depends on the electricity grid’s carbon intensity at the time of use. Running computational jobs when carbon intensity is lower, typically during periods of higher renewable generation, can therefore reduce environmental impact for a set amount of energy use.
This principle led to...
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Jeroen Dobbelaere (Institute of Science and Technology Austria)5/5/26, 5:15 PMPoster
Experimental research increasingly relies on computing to analyze data, model systems, and apply AI, expanding its role across all scientific disciplines. This shift has driven a surge in demand for computational power, alongside higher energy use and material consumption, compounding the already significant environmental footprint of experimental research.
To address this, a student-driven...
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Dr Dwayne Spiteri (DESY)5/5/26, 5:15 PMPoster
Computing forms a fundamental pillar of modern research. Efforts to minimise correlated C02 emissions of research infrastructures therefore need to include plans for sustainable computing models, and research into novel operations of data centres need to be conducted. The team on the Horizon EU RF2.0 project at DESY investigated how their data centre operates and tested a variety of...
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Jyoti Bhogal5/5/26, 5:15 PMPoster
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Amine Lahouel (CERN)5/5/26, 5:15 PMPoster
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Vladimir Bahyl (CERN)5/5/26, 5:15 PMPoster
As the High-Luminosity Large Hadron Collider (HL-LHC) prepares to generate exabytes of data, scaling storage infrastructure must balance performance with environmental responsibility. This poster highlights the critical role of magnetic tape storage as a sustainable, high-density solution for long-term data preservation at CERN.
While disk systems provide the high-throughput necessary for...
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Matteo Zanotto (University of Trento)5/5/26, 5:15 PMPoster
As increasingly powerful yet power-hungry AI models are developed and cloud computing adoption grows, the environmental impact of the Information Technology sector continues to rise. Data centers currently consume more than 400TWh of electricity annually and thus contribute to a globally concerning carbon footprint.
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To meet the rising electricity demand and to reduce their emissions, many... -
12. UrbanTwin: Digital Twins at the Service of a Sustainable Future through Integrated Urban SystemsDr Catarina G. Braz (École Polytechnique Fédérale de Lausanne), Dr Denisa-Andreea Constantinescu (EPFL Embedded Systems Lab)5/5/26, 5:15 PMPoster
Due to rising temperatures and climate change, urban areas face significant risks and impacts to livability. Cities are responsible for 75% of greenhouse gas emissions, placing them in a pivotal role in minimising the worst outcomes of climate change. They offer unique opportunities to integrate renewable energy sources, waste heat, wastewater, large-scale datacenters, and buildings, providing...
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JAIME IGLESIAS BLANCO (Spanish National Research Council (CSIC)), Jaime Iglesias Blanco (CSIC)5/5/26, 5:15 PMPoster
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