Entraîner efficacement des modèles d’IA avec PyTorch

You'll prepare data for distributed training by splitting the data across multiple devices and copying the model on each device. Accelerator provides a convenient interface for data preparation, and you'll learn how to preprocess images, audio, and text as a first step in distributed training.

In distributed training, each device trains on its data in parallel. You'll investigate two methods for distributed training: Accelerator enables custom training loops, and Trainer simplifies the interface for training.

Distributed training strains resources with large models and datasets, but you can address these challenges by improving memory usage, device communication, and computational efficiency. You'll discover the techniques of gradient accumulation, gradient checkpointing, local stochastic gradient descent, and mixed precision training.

You'll focus on optimizers as levers to improve distributed training efficiency, highlighting tradeoffs between AdamW, Adafactor, and 8-bit Adam. Reducing the number of parameters or using low precision helps to decrease a model's memory footprint.