Question 350
During a shared-cluster operating review at a university HPC center, engineers report the following issue: Operators observe temperature spikes only after nearby densely populated racks are activated. The affected work supports research training and scheduled compute allocations; fair resource access and repeatable cluster operations matter. Which TWO responses form the best remediation-and-evidence pair? (Select TWO.)
Explanation
Correct Answers
Correct corrective action. Match cooling capacity, airflow direction and rack placement to the heat output of concentrated GPU systems, using measured inlet temperatures and facility constraints. This fits the specific reported issue: Operators observe temperature spikes only after nearby densely populated racks are activated. The corresponding failure being reduced is: Hotspots, inadequate airflow or insufficient liquid-cooling capacity can cause thermal throttling and hardware availability issues.
Correct independent evidence. Sustained stress testing shows inlet temperatures and accelerator thermals remain within the approved equipment operating envelope. This verifies the corrective approach for the affected research training and scheduled compute allocations instead of treating an architecture diagram alone as success.
Incorrect Answers
Not the most direct the action-and-evidence pair for these facts. A supported RDMA path passes connectivity and performance checks and demonstrates the intended transport rather than a TCP fallback. This choice concerns rdma direct memory transport concepts and may be valid in another design. But this case reports 'Operators observe temperature spikes only after nearby densely populated racks are activated', which calls for reasoning about cooling design for dense accelerated racks. The targeted response is: Match cooling capacity, airflow direction and rack placement to the heat output of concentrated GPU systems, using measured inlet temperatures and facility constraints.
Not the most direct the action-and-evidence pair for these facts. Consider data residency, security requirements, network egress and operational control when deciding between private infrastructure, cloud and a hybrid AI environment. This choice concerns data locality and control in ai deployment placement and may be valid in another design. But this case reports 'Operators observe temperature spikes only after nearby densely populated racks are activated', which calls for reasoning about cooling design for dense accelerated racks. The targeted response is: Match cooling capacity, airflow direction and rack placement to the heat output of concentrated GPU systems, using measured inlet temperatures and facility constraints.
Not the most direct the action-and-evidence pair for these facts. Calculate steady and peak rack power demand for GPU servers, network devices and support equipment, with appropriate electrical headroom and redundant feed design. This choice concerns ai rack power budgeting and delivery and may be valid in another design. But this case reports 'Operators observe temperature spikes only after nearby densely populated racks are activated', which calls for reasoning about cooling design for dense accelerated racks. The targeted response is: Match cooling capacity, airflow direction and rack placement to the heat output of concentrated GPU systems, using measured inlet temperatures and facility constraints.