|
| 1 | +--- |
| 2 | +authors: [boegel, ocaisa, trz42, hvelab, laraPPr, PPapez] |
| 3 | +date: 2025-10-20 |
| 4 | +slug: eurohpc-user-day-2025 |
| 5 | +--- |
| 6 | + |
| 7 | +# EuroHPC User Days 2025 + CI/CD Hackathon |
| 8 | + |
| 9 | +<figure markdown="span"> |
| 10 | +{width=50%} |
| 11 | +</figure> |
| 12 | + |
| 13 | +The [EuroHPC User Days 2025](https://www.eurohpc-ju.europa.eu/media-events/events/eurohpc-user-days-2025-2025-09-30_en), |
| 14 | +which took place in Copenhagen (Denmark) was a great event to connect with the EuroHPC community. |
| 15 | + |
| 16 | +Several members of the EESSI community participated, and we also organised an |
| 17 | +[EESSI CI/CD hackathon](../../../../training-events/2025/hackathon-eurohpc-user-days.md) directly afterwards |
| 18 | +on Thu 2 Oct 2025. |
| 19 | + |
| 20 | +--- |
| 21 | + |
| 22 | +## EuroHPC User Days 2025 |
| 23 | + |
| 24 | +### Plenary sessions |
| 25 | + |
| 26 | +The plenary sessions of the EuroHPC User Days 2025 featured representatives of both the |
| 27 | +[EuroHPC Joint Undertaking (JU)](https://www.eurohpc-ju.europa.eu) |
| 28 | +and the EuroHPC community talking about current and upcoming activities. |
| 29 | + |
| 30 | +Recordings of the plenary sessions are available: [day 1](https://youtu.be/w8DNYR4tO3M?si=J_50JbR-DNmoCV-r), [day 2](https://youtu.be/HFhb3woFxGw). |
| 31 | + |
| 32 | +<figure markdown="span"> |
| 33 | +{width=75%} |
| 34 | +<figcaption>Anders Dam Jensen (CEO of EuroHPC JU) at the opening plenary</figcaption> |
| 35 | +</figure> |
| 36 | + |
| 37 | +The EuroHPC Federation Platform (EFP) was highlighted during the presentation |
| 38 | +on the EuroHPC supercomputer infrastructure: |
| 39 | + |
| 40 | +<figure markdown="span"> |
| 41 | +{width=75%} |
| 42 | +</figure> |
| 43 | + |
| 44 | +The first version of the EuroHPC Federation Platform will be available in March 2026, |
| 45 | +and will include EESSI as the base for the Federated Software Catalogue (FSC) component. |
| 46 | + |
| 47 | +See also our previous blog post on how [EESSI will be integrated in the EuroHPC Federation Platform](../02/eessi-integration-in-efp.md). |
| 48 | + |
| 49 | + |
| 50 | +### Networking |
| 51 | + |
| 52 | +The networking sessions were of particular interest to us, |
| 53 | +since they allowed us to discuss EESSI and related topics with a various people from the EuroHPC Community. |
| 54 | + |
| 55 | +Somewhat unexpectedly a stand was available during the Meet & Greet networking session |
| 56 | +for EuroHPC Centre-of-Excellence (CoE) projects. |
| 57 | +We took the opportunity as representatives of the [MultiXscale](https://www.multixscale.eu/) |
| 58 | +to set up an improved info stand, where we also did live hands-on demos with EESSI. |
| 59 | + |
| 60 | +<figure markdown="span"> |
| 61 | +{width=75%} |
| 62 | +<figcaption>Group picture in front of MultiXscale info stand</figcaption> |
| 63 | +</figure> |
| 64 | + |
| 65 | +During the networking sessions we engaged with various EuroHPC Hosting Entities, |
| 66 | +either about their experience with making EESSI available on the EuroHPC supercomputers they operate, |
| 67 | +or about their ongoing efforts to make EESSI available soon. |
| 68 | + |
| 69 | +<figure markdown="span"> |
| 70 | +{width=75%} |
| 71 | +<figcaption>Discussion on making EESSI available on <a href="https://discoverer.bg/">Discoverer</a></figcaption> |
| 72 | +</figure> |
| 73 | + |
| 74 | + |
| 75 | +## EESSI CI/CD hackathon |
| 76 | + |
| 77 | +Next to attending the two-day EuroHPC User Days event we also organised an EESSI CI/CD hackathon at the same venue the |
| 78 | +day after, in collaboration with [MultiXscale](https://www.multixscale.eu/), |
| 79 | +[CASTIEL2](https://www.eurohpc-ju.europa.eu/research-innovation/our-projects/castiel-2_en), |
| 80 | +[NCC Denmark](https://hpc-portal.eu/nccs/ncc-denmark), |
| 81 | +and the [Danish e-infrastructure Consortium (DeiC)](https://www.deic.dk/en). |
| 82 | + |
| 83 | +Initially we were a bit unsure whether or not this would attract enough interest, |
| 84 | +but in the end we filled all available seats for in-person attendees, |
| 85 | +and also had a bunch of remote attendees who followed via Zoom. |
| 86 | + |
| 87 | +The hackathon started with a presentation by Alan O'Cais outlining how EESSI can be leveraged for |
| 88 | +Continunous Integration (CI) and Continuous Deployment (CD). |
| 89 | + |
| 90 | +Presentation materials are available [here](../../../../training-events/2025/EESSI-CI-CD-hackathon-20251002.pdf). |
| 91 | + |
| 92 | +<figure markdown="span"> |
| 93 | +{width=75%} |
| 94 | +<figcaption>Hackathon participants paying attention during the presentation</figcaption> |
| 95 | +</figure> |
| 96 | + |
| 97 | +During the hands-on session participants could "pick their own adventure", |
| 98 | +and decide for themselves whether they wanted to explore using EESSI in GitHub Actions |
| 99 | +or take up another challenge. Several members of the EESSI core team were available to |
| 100 | +answer questions and provide hands-on help to hackathon participants. |
| 101 | + |
| 102 | +<figure markdown="span"> |
| 103 | +{width=75%} |
| 104 | +<figcaption>Hackathon participants during hands-on session</figcaption> |
| 105 | +</figure> |
| 106 | + |
| 107 | +All in-person attendees received a free EESSI coffee mug as a token of appreciation |
| 108 | +for their participation in the hackathon. |
| 109 | + |
| 110 | +<figure markdown="span"> |
| 111 | +{width=75%} |
| 112 | +<figcaption>Group picture at the EESSI CI/CD hackathon</figcaption> |
| 113 | +</figure> |
| 114 | + |
| 115 | + |
| 116 | +#### Raspberry Pi Starter Kit Prize |
| 117 | + |
| 118 | +<figure markdown="span"> |
| 119 | +{width=75%} |
| 120 | +</figure> |
| 121 | + |
| 122 | +The hackathon featured a Raspberry Pi starter kit prize, |
| 123 | +sponsored by [Do IT Now](https://www.doitnowgroup.com), |
| 124 | +which was granted to the participant who made on the most impressive progress during the hackathon. |
| 125 | + |
| 126 | +<figure markdown="span"> |
| 127 | +{width=75%} |
| 128 | +<figcaption>Nitin Shukla (<a href="https://www.cineca.it/en">CINECA</a>) won the Raspberry Pi Start Kit prize</figcaption> |
| 129 | +</figure> |
| 130 | + |
| 131 | +--- |
| 132 | + |
| 133 | +More information on the EESSI CI/CD hackathon that was held in conjunction with the EuroHPC User Days 2025 |
| 134 | +is available [here](../../../../training-events/2025/hackathon-eurohpc-user-days.md). |
| 135 | + |
| 136 | +We hope to organise more sessions like this in the future! |
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