Question 280
During a shared-cluster operating review at a university HPC center, engineers report the following issue: A distributed training job fails at startup because per-device memory requirements were not modeled. The affected work supports research training and scheduled compute allocations; fair resource access and repeatable cluster operations matter. Choose TWO: one corrective approach and one result demonstrating it works. (Select TWO.)
Explanation
Correct Answers
Correct corrective action. Estimate model weights, gradients, optimizer state, activations and batch size against usable GPU memory before selecting training hardware. This fits the specific reported issue: A distributed training job fails at startup because per-device memory requirements were not modeled. The corresponding failure being reduced is: Parameter count alone understates training memory and can cause out-of-memory failures even if nominal GPU compute is sufficient.
Correct independent evidence. A representative training step fits available memory with headroom and records memory peaks rather than relying only on a vendor peak-operations figure. 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. Size accelerator throughput alongside CPU preprocessing, storage read bandwidth and networking so the training system can sustain data delivery and communication. This choice concerns training system compute and data feed balance and may be valid in another design. But this case reports 'A distributed training job fails at startup because per-device memory requirements were not modeled', which calls for reasoning about gpu memory capacity for model training. The targeted response is: Estimate model weights, gradients, optimizer state, activations and batch size against usable GPU memory before selecting training hardware.
Not the most direct the action-and-evidence pair for these facts. Design a cluster as an integrated compute, storage, networking, orchestration and management system rather than an unordered collection of GPU servers. This choice concerns core components of an accelerated ai cluster and may be valid in another design. But this case reports 'A distributed training job fails at startup because per-device memory requirements were not modeled', which calls for reasoning about gpu memory capacity for model training. The targeted response is: Estimate model weights, gradients, optimizer state, activations and batch size against usable GPU memory before selecting training hardware.
Not the most direct the action-and-evidence pair for these facts. Facilities approve actual floor loading, cabinet clearances and installation handling requirements for the proposed system. This choice concerns rack floor loading and physical space readiness and may be valid in another design. But this case reports 'A distributed training job fails at startup because per-device memory requirements were not modeled', which calls for reasoning about gpu memory capacity for model training. The targeted response is: Estimate model weights, gradients, optimizer state, activations and batch size against usable GPU memory before selecting training hardware.