The primary distinction between training and inference lies in their operational demands. Training necessitates large amounts of data to iteratively optimize model parameters, often involving extensive datasets processed in batches across multiple GPUs to achieve convergence.
Inference, however, is designed for real-time or low-latency processing, where trained models are deployed to make predictions on new inputs with minimal delay, typically requiring less data volume but high responsiveness. This fundamental difference shapes their respective architectural designs and resource allocations.