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The Conference for Research Software Engineering in Germany is a yearly event to foster synergies between scientist who code, domain experts and HPC practitioners. The 6th iteration (deRSE26) was located at the University of Stuttgart and co-organized by a member of the MultiXscale consortium. The event attracted 280 participants and featured 90 posters and 100 talks, workshops, and interactive sessions organised in 5 parallel sessions. A full day was dedicated to HPC, with a 3-hour workshop on the Jülich Benchmarking Environment and a 3-hour HPC Carpentry instructor on-boarding session. We also learned about regional HPC consulting services offered by HPC.nrw and bwRSE4HPC, the commissioning of the Tier-3 BinAC2 cluster to democratize access to HPC in academia, the new FutuRSI institute to support developers of research software, a national initiative at NFDI to catalogue research software and run interactive Jupyter notebooks in the cloud, and the EU-funded EVERSE project to catalogue research software and document their compliance with FAIR principles. We got updates on the multiscale and multiphysics simulation software ESPResSo, waLBerla and TrixiParticles.jl, on HPC workflows with pyiron/Semantikon/APE, and on porting applications to HPC with Coccinelle semantic patching. The event concluded with a guided tour of the Tier-1 HLRS supercomputer facility, where we learned about Cray computers, the upcoming AI Factory HammerHAI, sustainable computing, and how heat generated by the next flagship supercomputer Herder will be captured and redistributed into the University district heating network to reduce its carbon footprint. Many contributions to deRSE26 covered topics that MultiXscale actively engages in, namely porting software to HPC, software marketplaces, and HPC training. National and regional initiatives such as NFDI, FutuRSI, HPC.nrw and bwRSE4HPC show a need in academia to get better access to infrastructure, consulting services and training opportunities for software developers, similar to how National Competence Centres (NCCs) provide HPC and software-related services to industry and academia at the European level. The conference abstracts and slides can be obtained from the event website and the associated Zenodo community. *Group photo taken by Adam Pagan, licensed under CC-BY-4.0. Talk photos by Volodymyr Kushnarenko.

provided by EuroHPC CoE MultiXscale What if you no longer have to install a broad range of scientific software from scratch on every laptop, HPC cluster, or cloud instance you use or maintain, without compromising on performance? The European Environment for Scientific Software Installations (EESSI, https://eessi.io) comes to the rescue! In this webinar series we will provide a comprehensive overview of EESSI: why we started it, how it works, how you can use it, … You can register for the sessions here (either all of them, or selected ones). All sessions will be recorded. Recordings, slides, and materials used will be made publicly available shortly after each session via this page. Further details available here.

MultiXscale CoE coordinator, Dr. Matej Praprotnik (National Institute of Chemistry) joined the roundtable discussion “Codes That Drive a Better World: Challenges and Opportunities in the Development of Artificial Intelligence for Ensuring a Sustainable Future”, organized in the framework of the Food for Thought Festival on 16 March 2026 at the University of Ljubljana (Slovenia). The recording is already available on YouTube. Discover further details about the event here.

The SC Women’s History Month Profiles project started three years ago, and since then, it has highlighted more than 200 women whose work is shaping the High-performance computing (HPC) community across research, engineering, education, and leadership. The theme selected for this year “HPC Unites” reflects the collaborative nature of the field, bringing together people, disciplines, and institutions to solve complex challenges and drive innovation. Discover more about their profiles here

The new episode for “Supercomputing in Europe. HPC in Europe network” is out! This time is joined by MultiXscale experts Caspar van Leeuwen,⁠ Machine Learning Consultant at ⁠SURF⁠ and ⁠Helena Vela Beltran⁠, Computational Scientist at ⁠HPCNow! and Do IT Now Spain⁠. Both are actively contributing to the ⁠MultiXscale CoE⁠ and the ⁠EESSI project⁠, the European Environment for Scientific Software Installations, a common stack of scientific software installations for HPC systems and beyond, including PCs and cloud infrastructure. The interview and mixing is carried out by Apostolos Vasileiadis (ENCCS, Mimer AI Factory) Listen to the full interview here: Spotify: https://open.spotify.com/episode/0eYCo5VLyuujIIlrfAFP9o?si=HVN3qxdpTEagbaCSyB051w Apple podcasts: https://podcasts.apple.com/se/podcast/eessi-simplifying-software-installation-in-hpc-systems/id1768782069?i=1000758537611 Add the RSS feed to your favourite podcast app: https://anchor.fm/s/f01f82a4/podcast/rss

Since the blog post in Feb’25 announcing that EESSI will be integrated in the EuroHPC Federation Platform (EFP), we have been working hard on making this a reality. The Federated Software Catalog (FSC) component of EFP will use EESSI as a base. As a result, EESSI will soon be available on all EuroHPC supercomputers. In fact, EESSI is already available on the majority of them today! Read all the details on the EESSI blog post here

By Jean-Noël Grad We are pleased to announce the release of ESPResSo 5.0. ESPResSo is an open-source simulation software for particle- and lattice-based modelling, used across soft matter, statistical physics, biophysics, and process engineering – from polyelectrolytes, gels and colloids to bacterial motion and super-capacitors. A highlight of this release is the redesign of lattice-Boltzmann and electrokinetics on CPU and GPU using the HPC-ready waLBerla framework. This work was carried out in the context of the MultiXScale EuroHPC CoE. In addition to more fine-grained control of boundary conditions, it brings multi-GPU support for lattice-Boltzmann hydrodynamics coupled to molecular dynamics. ESPResSo 5.0 also introduces support for shared-memory parallelism, delivering improved performance on hybrid CPU/GPU systems. New features and algorithms were introduced to tackle challenging multiphysics problems: magnetodynamics solver, hydrodynamics under shear, Andersen and MTK barostats, per-particle selection of equations of motion, and integration with the Atomic Simulation Environment (ASE). ESPResSo blends scalable algorithms with a Python interface to enable flexible simulation workflows and provide seamless integration with other scientific software. The source code can be found at https://github.com/espressomd/espresso. Moreover, as part of the EuroHPC Center of Excellence multiXscale, ESPResSo is available on the EESSI software stack to simplify installations on workstations, computer clusters, and cloud environments.

By Jean-Noël Grad The first Stuttgart Research Software Day (SRSD1) was organised as a satellite event of the 6th Conference for Research Software Engineering in Germany (deRSE26) and explored Stuttgart’s contribution to open source research software through 56 posters. Several contributions featured multiscale and multiphysics software, such as ESPResSo, DuMux, preCICE, OpenDiHu and FANS. Contributions to IT infrastructure included the EESSI software stack and GitHub Action from MultiXscale, the large-scale research data storage and sharing platform bwSFS-2 for Tier-3 HPC clusters, and a CPU operating map test bench to visualize how varying CPU frequencies and workloads impact datacenter energy efficiency. Posters are available online in the SRSD1 Zenodo community.

In the framework of the International Women’s Day – 8 March, this week, we highlight the talented women involved in our MultiXscale CoE through a series of short interviews, where they share their journeys, perspectives, and the inspiration behind their work:

By Jean-Noël Grad We are happy to announce ESPResSo pre-releases are available as binaries on the development stack of EESSI. Several commits of the python branch of ESPResSo can now be used on HPC clusters that adopted EESSI, as well as in GitHub CI/CD. Continuous testing (CI) and continuous deployment (CD) are important to ensure the reproducibility of software and executable papers. Python projects like pyMBE and SwarmRL are using pre-release versions of ESPResSo to test their software against the most recent ESPResSo features, without having to wait for the next official release. Simulation scripts and Jupyter notebooks can now be shared and executed on GitHub runners without the need to build ESPResSo from sources. To help you get started with this new service, we wrote a tutorial with re-usable GitHub workflows: https://www.eessi.io/docs/blog/2025/12/04/gh-ci-workflow-for-EESSI Further information available here