Distributed Data Parallel in PyTorch - Video Tutorials¶
Authors: Suraj Subramanian
Follow along with the video below or on youtube.
This series of video tutorials walks you through distributed training in PyTorch via DDP.
The series starts with a simple non-distributed training job, and ends with deploying a training job across several machines in a cluster. Along the way, you will also learn about torchrun for fault-tolerant distributed training.
The tutorial assumes a basic familiarity with model training in PyTorch.
Running the code¶
You will need multiple CUDA GPUs to run the tutorial code. Typically, this can be done on a cloud instance with multiple GPUs (the tutorials use an Amazon EC2 P3 instance with 4 GPUs).
The tutorial code is hosted at this github repo. Clone the repo and follow along!
Introduction (this page)
What is DDP? Gently introduces what DDP is doing under the hood
Single-Node Multi-GPU Training Training models using multiple GPUs on a single machine
Fault-tolerant distributed training Making your distributed training job robust with torchrun
Multi-Node training Training models using multiple GPUs on multiple machines