Name: Thousands of Virtual Kubelets: 1-to-1 Mapping a Supercomputer To Kubernetes With Supernetes - Dennis Marttinen, Aalto University
Start: 2025-04-04T13:45:00+0100
End: 2025-04-04T14:15:00+0100

In-person
1-4 April 2025
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Friday April 4, 2025 13:45 - 14:15 BST

Level 1 | Hall Entrance S10 | Room B

Bridging the gap between High-Performance Computing (HPC) and the cloud is an ongoing challenge in the cloud-native ecosystem. Most projects migrate some parts of the batch job scheduling from Slurm to Kubernetes. However, with many HPC systems rigidly tied to Slurm and its features, where is the integration limit?

Introducing Supernetes: an open source HPC-to-cloud bridge that bidirectionally reconciles all Slurm tasks to v1/Pods, and all Slurm nodes to v1/Nodes, 1-to-1. Supernetes tolerates the strictest HPC limitations: tight firewalls, no root, no fakeroot, no namespaces, no slurmrestd API. If you can run sbatch and scontrol, you can run Supernetes.

In this session, Dennis presents his quest to integrate LUMI, a global top-10 supercomputer, with Kubernetes. Starting from HPC-to-cloud bridge basics, the talk evolves into running thousands of virtual kubelet instances and hacking FluxCD to reconcile from a gRPC tunnel. The session concludes with a live demo of Supernetes on LUMI.

Speakers

Dennis Marttinen

Security and Cloud Computing (SECCLO) Master Student, Aalto University

Dennis is a Security and Cloud Computing (SECCLO) double-degree master student with a broad background in Kubernetes, supercomputing/HPC, networking and cloud security. He is the co-author of Weave Ignite, a container-to-microVM solution, and Racklet, a scale model rack project presented... Read More →

Friday April 4, 2025 13:45 - 14:15 BST
Level 1 | Hall Entrance S10 | Room B

Emerging + Advanced

Content Experience Level Intermediate

KubeCon + CloudNativeCon Europe 2025

Dennis Marttinen

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