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EXAMPLE_SYSTEM_DESIGNS.md

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Example system designs

Omnia can configure systems which use Ethernet or Infiniband-based fabric to connect the compute servers.

Example system configuration with Ethernet fabric

Example system configuration with Infiniband fabric

Network Setup

Omnia assumes that servers are already connected to the network and have access to the internet.

Network Topology

Possible network configurations include:

  • A flat topology where all nodes are connected to a switch which includes an uplink to the internet. This requires multiple externally-facing IP addresses

  • A hierarchical topology where compute nodes are connected to a common switch, but the manager node contains a second network connection which is connected to the internet. All outbound/inbound traffic would be routed through the manager node. This requires setting up firewall rules for IP masquerade, see here for an example.

    IP and Hostname Assignment

    The recommended setup is to assign IP addresses to individual servers. This can be done manually by logging onto each node, or via DHCP.