Introduction

This section outlines the infrastructure—covering storage, network, and compute resources—supporting the NDIP platform. An overall diagram of the NDIP/NOVA infrastructure is shown below.

The NDIP consists of two primary components:

1. Core Services – These essential services operate on virtual machines within the ORNL Open Research Cloud (ORC).
2. Worker Nodes – These are the computational resources where users execute their jobs. They are distributed across multiple environments:
   • ORC cloud (same infrastructure as core services)
   • Neutron Science analysis cluster
   • OLCF Frontier, via the Slate Kubernetes cluster
   • NERSC Perlmutter, via the Spin Kubernetes cluster

Currently in use:

Name	Host	Source
Calvera	calvera.ornl.gov	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Calvera Test Instance	calvera-test.ornl.gov	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Pulsar "CPU" Node	pulsar-cpu	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Pulsar Test Node	pulsar-test	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Pulsar "Large CPU" Node	pulsar-large-cpu	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Pulsar "Export" Node	pulsar-export	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Pulsar "SNS GPU" Node	sns-ndip-gpu.sns.gov	support@linux.sns.gov
OLCF/Slate/Marble	https://console-openshift-console.apps.marble.ccs.ornl.gov	deployed by NCCS
NERSC/Spin	https://rancher2.spin.nersc.gov	deployed by NERSC
Ingress Proxy Node	ingress-proxy-vm	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
Rucio VM	rucio_url	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc
One-node Kubernetes cluster for monitoring services	prometheus_push_gateway	https://code.ornl.gov/ndip/infrastructure/ndip-k8s-cluster
Documentation Server	documentation_server_url	https://code.ornl.gov/ndip/infrastructure/ndip-vms-in-orc

In the following sections, we provide details about infrastructure components and their deployment where applicable.