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This guide provides instructions for setting up and using Podman containers for running deep learning applications with PyTorch and NVIDIA GPUs.

• Containers For Deep Learning: NVIDIA User Guide
• Podman and the NVIDIA Container Toolkit: Installing Podman
• Support for Container Device Interface Running a Workload with CDI
• Running PyTorch in Docker Containers with NVIDIA GPUs: NVIDIA PyTorch Notes
• Run on an On-Prem Cluster: Pytorch Cluster Setup

1. Project Folder:
   • Rename your project folder to my_project.
2. Environment Variables:
   • Open the .env/.argfile file in the root directory.
   • Set your project name as an environment variable (e.g., PROJECT_NAME=my_project).
   • Set the Jupyter Lab port (e.g., JUPYTER_PORT=8000).
   • Configure cluster settings (MASTER_PORT, MASTER_ADDR, WORLD_SIZE, NODE_RANK).
   • Set NCCL environment variables.
3. Requirements File:
   • Add any necessary pip dependencies to the requirements.txt file.

• Starting the Container:
  • Run bash build.sh to build and start the container using Podman.
• Accessing Jupyter Lab:
  • Connect to Jupyter Lab through http://<ip-address>:<JUPYTER_PORT>/?token=<token>
• Direct File Execution:
  • To directly execute a file, such as a python script, from the terminal, use a command like the following:
    • ( source .env && podman exec -w /workspace/my_project $PROJECT_NAME-$NODE_RANK conda run --live-stream -n accelerate accelerate launch my-project.py --arg1 ../path/to/data )
  • This command sources your environment variables from .env and executes the specified Python script or Jupyter notebook inside the Podman container.

• Synchronization between Nodes with Optional File Execution:
  • The sync folder contains a script for synchronizing your working directory with remote nodes, essential for training on a cluster.
  • The script supports start and stop actions for synchronizing and managing containers on remote nodes.
  • Additionally, the sync/sync.sh command can take an optional fourth argument specifying a file/path (script or notebook) from the project directory, which will then be executed.
  • Starting Synchronization and Containers:
    • Usage: bash sync/sync.sh <local_absolute_path> <remote_relative_path> start [optional_file_path].
    • For example, to start synchronization and execute a script: bash sync/sync.sh ~/my_project .sync/my_project start /scripts/my-script.py.
  • Stopping Remote Containers:
    • Usage: bash sync/sync.sh <local_absolute_path> <remote_relative_path> stop.
    • For example: bash sync/sync.sh ~/my_project .sync/my_project stop.
  • Configuring Sync Settings:
    • Update the sync/config.json file to include your own nodes, their respective SSH access details, and keys. Ensure to replace node1, node2, etc., with your actual node details.