Calypso software stack (retired)
Nothing below runs any more: the nodes were rebuilt as carnaval Proxmox
nodes (why and how). The SLURM accounting database was dumped to
rumba:/hdd/backup/calypso-preinstall/calypso0/slurm_acct_db.sql.gz.
The software configuration of the Calypso students cluster.
User accounts
User access is SSH based, managed by the staff — see Getting access.
Container runtimes
To run containers on Calypso, you can use:
SLURM cluster
There is a SLURM cluster on all Calypso worker nodes:
| Node | Role |
|---|---|
calypsomaster | no SLURM |
calypso0 | SLURM controller + accounting DB |
calypso[1-7] | SLURM workers |
GPU resources
Each node in the cluster has the NVIDIA Container Toolkit installed, which allows you to use their NVIDIA GPUs from within containers:
calypso[0-7]are equipped with NVIDIA A2 GPUs
The Tesla T4 nodes left the cluster with the 2026-08-04 rebuild — calypso8-10 became
carnaval0-2, and the rest are racked as spares.
Docker registry
To avoid saturating the network link with builds, there is a local registry
that can be used on calypsomaster. The daemon.json of each node is already
configured with this local insecure registry:
{
"insecure-registries": ["192.168.88.248:5000"]
}
The registry is effectively dead (the container runs with no published ports — verified 2026-08-02) and is slated for retirement with the calypsomaster conversion; the earlier plan of re-creating it behind a local PKI is superseded by that conversion.