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Fault-Tolerant Training Cluster Execution Plan

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Problem

Scenario

You’ve been asked to lead the execution plan for a fault-tolerant distributed training cluster that will support large model training runs. The current environment can complete small jobs, but long-running multi-node training is vulnerable to node loss, network instability, storage bottlenecks, and slow recovery after failures. The project matters because repeated training interruptions are delaying model delivery and driving up compute waste, but different stakeholders want different outcomes: researchers want maximum throughput, infrastructure wants reliability, and finance wants tighter control of GPU spend.

Question

How would you architect and execute a fault-tolerant system for a distributed training cluster?