What Is Fabric Manager?_
It establishes the logical topology among GPUs connected by high-speed copper links and maintains link health during operation. The software runs on a designated host or service node and communicates with GPU drivers and switches to bring the fabric online after power-on. It operates separately from the scale-out InfiniBand or Ethernet network that connects racks.
Technical Details
NVLink connections form a copper spine contained inside the rack enclosure. Fabric Manager validates topology against the expected GPU layout and reports link status to higher-level cluster software. It does not manage MPO or fiber connections used for inter-rack traffic. Configuration changes are driven by the OEM-provided fabric configuration file rather than manual switch commands.
How Leviathan Systems Works with Fabric Manager
During commissioning, field crews confirm that Fabric Manager reports all expected intra-rack links as healthy before handing the rack over to integration testing.
Related service
Network Testing & Commissioning →