Question 120
During a GPU datacenter maintenance window, an engineer discovers: A recently delivered accelerator system has inconsistent PSU models across sibling nodes, and unexpected power alarms occur only during high utilization. Which repeatable operational safeguard best prevents recurrence of this failure?
Explanation
Correct Answer
This preventive practice addresses the underlying failure (Nominal wattage labels do not guarantee that mixed PSU variants are interoperable or sufficient for peak GPU power.) and supports continued assurance through: Each host's power supply inventory matches the approved platform matrix and sustained stress leaves redundancy headroom intact.
Incorrect Answers
This prevention control targets another operational risk: A technician sees a healthy network interface LED on a ConnectX adapter but a cluster workload receives only a fraction of the planned throughput. The currently reported mechanism remains: Nominal wattage labels do not guarantee that mixed PSU variants are interoperable or sufficient for peak GPU power.
This prevention control targets another operational risk: A newly commissioned host reports an expected GPU count but the installed memory size differs from the purchase specification on two nodes. The currently reported mechanism remains: Nominal wattage labels do not guarantee that mixed PSU variants are interoperable or sufficient for peak GPU power.
This prevention control targets another operational risk: A GPU cluster works at idle but repeatedly throttles during model training because the data center cooling model uses average rather than peak accelerator heat output. The currently reported mechanism remains: Nominal wattage labels do not guarantee that mixed PSU variants are interoperable or sufficient for peak GPU power.