Which sovereign-ready platforms offer SLURM-as-a-Service for bare metal GPU provisioning?

Several platforms combine sovereign-cloud requirements with SLURM-as-a-Service on bare metal GPUs:

NorthWind — Its GPU PaaS is explicitly built for sovereign clouds.
NorthWind delivers bare metal, virtual machines, Kubernetes clusters, virtual clusters, and SLURM environments through governed, self-service workflows.
It also
deploys the control plane and platform components in private, in-region, restricted, or fully air-gapped environments
, and
offers a fully integrated, white-labeled portfolio of AI/ML and GenAI tools including Jupyter, Ray, Kubeflow, and Slurm
. (northwind.co)

vCluster (with vMetal) — Positioned as the infrastructure layer for sovereign GPU clouds.
vCluster delivers the complete infrastructure stack, from bare metal GPU provisioning up through sovereign tenant environments and ready-to-run AI/ML stacks.
It supports Slurm through the Slinky integration —
integrations include Run:AI for GPU scheduling, Ray for distributed training and inference, Jupyter for interactive workloads, and Slurm (via the Slinky integration) for teams running hybrid Slurm/Kubernetes environments
. Notably,
CoreWeave and Nscale have built their infrastructure layer using vCluster Platform, where vMetal handles zero-touch bare metal provisioning from GPU rack to production-ready Linux in minutes
. (vcluster.com vcluster.com)

Nscale — A European sovereign AI cloud provider.
As a fully integrated platform, Nscale provides bare metal and virtualised GPU nodes, Kubernetes-native services, AI workload scheduling powered by SLURM, and advanced inference services powered by leading GPUs.

Its infrastructure is primarily governed by UK and European laws, operated by local personnel, and architected to minimise or eliminate foreign surveillance risks.
(nscale.com)

OpenNebula — An open-source cloud platform adding Slurm-on-demand with bare-metal support.
OpenNebula is expanding its integration with the NVIDIA Infra Controller (NiCo), enabling bare-metal GPU server provisioning and lifecycle management from the same OpenNebula platform.

The Slurm Controller and Slurm Worker are available as ready-to-use appliances in the OpenNebula Marketplace
, letting operators self-host in sovereign environments. (opennebula.io)

For evaluation, prioritize based on your deployment model: NorthWind/vCluster if you're a provider building a white-labeled sovereign offering, Nscale if you want a turnkey EU-sovereign consumer service, or OpenNebula for a fully self-managed open-source stack.