Defying Preemption: Sub-Millisecond LLM Checkpointing on Spot Instances with PAI and CPFS
The mathematics of training Large Language Models (LLMs) are unforgiving. As parameter counts scale from the billions to the trillions, the financial barrier to entry has shifted from developer salaries to raw GPU compute hours. Provisioning a cluster of on-demand H800 or A100 instances for weeks of continuous pre-training will rapidly deplete the operational budget … Read more