{"id":"cluster-commissioning-gates","level":"infrastructure","name":"Commissioning a usable AI cluster","shortName":"Commissioning a usable AI cluster","role":"Requires accepted electrical, thermal, network, software and operational behavior together.","description":"A completed building or powered shell is only one stage of an AI facility. Installed racks must pass electrical and cooling checks, networks must form the intended topology, storage must deliver inputs and checkpoints, and software must execute representative jobs reliably. Commissioning tests these interactions rather than merely inventorying components. Acceptance should include fault handling and service recovery appropriate to the system. The NVIDIA guide separates configuration, health checks and hardware services, providing one concrete operational reference. A dated readiness model can show partial progress while retaining the distinction between installed equipment and capacity that has actually been admitted for useful work.","specs":[{"label":"Readiness state","value":"Installed, tested, accepted and schedulable","context":"These are evidence-bearing stages rather than synonyms."},{"label":"Acceptance workload","value":"Representative end-to-end task","context":"A component self-test cannot establish full application behavior."}],"interfaces":[{"name":"Installed infrastructure","direction":"in","signal":"Racks, electrical service, cooling, network and software"},{"name":"Accepted cluster resources","direction":"out","signal":"Healthy, configured resources available to an authorized scheduler"}],"tradeoff":"Comprehensive integration tests take time and resources, but skipping them can transfer failures into expensive production runs.","whyAI":"A fleet of delivered accelerators can yield little useful compute while network, thermal or software acceptance remains incomplete.","related":["management-controller","scheduler","grid-interconnection-readiness"],"sources":[{"title":"NVIDIA DGX GB Rack Scale Systems: Hardware","url":"https://docs.nvidia.com/dgx/dgxgb200-user-guide/hardware.html"},{"title":"NVIDIA DGX GB Rack Scale Systems: Networking","url":"https://docs.nvidia.com/dgx/dgxgb200-user-guide/networking.html"}],"scale":"Manufacturing supply to commissioned hall; time-dependent model","kind":"architecture","branch":"Data-center physical systems","subbranch":"Capacity, ramps and commissioning","mechanism":["Reconcile installed equipment with its documented configuration and service connections.","Verify electrical and thermal operation across representative load conditions.","Check fabric topology, storage access, firmware and driver compatibility.","Run end-to-end workload and recovery exercises that cross subsystem boundaries.","Record accepted scope and admit only the corresponding healthy resources into production scheduling."],"misconception":"Installed GPU count is not the same as commissioned or available GPU count.","check":{"question":"Why might a healthy accelerator remain unavailable for jobs?","options":["The installed count automatically includes every service","A required fabric or cooling acceptance gate is incomplete","Healthy hardware always bypasses commissioning"],"answer":1,"explanation":"Useful operation requires the complete dependency set, so one healthy component cannot substitute for missing system readiness."},"science":[{"title":"Readiness conjunction","equation":"Ready = Electrical ∧ Thermal ∧ Fabric ∧ Software ∧ Operations","explanation":"Each term is an evidence-backed Boolean for the stated scope and date.","assumptions":"A simplified acceptance model; products can require additional gates and partial phases need separate records."}],"prerequisites":["rack","management-controller"],"learningObjective":"Explain why subsystem readiness gates determine usable cluster capacity.","workstream":"W09","visualFamily":"capacity-flow","engineeringExample":"Synthetic hall has 100 installed racks, but only 80 with accepted cooling and 70 in an accepted fabric domain. At most 70 can pass both bounds, and only if those accepted sets overlap appropriately.","evidenceNotes":"The set-overlap qualification matters: taking minima assumes compatible resources. This lesson supplies an educational gate model, not a manufacturer acceptance procedure.","labId":"engineering","scope":"Propagate a stated facility power budget, PUE, readiness and utilization to illustrative work; detailed conversion, battery, cooling and grid models are not included.","deepLabId":"hall","investigationId":"manufacturing","labScope":"Propagate a stated facility power budget, PUE, readiness and utilization to illustrative work; detailed conversion, battery, cooling and grid models are not included."}