Can I run wandb offline?

If training occurs on an offline machine, use the following steps to upload results to the servers:

1. Set the environment variable WANDB_MODE=offline to save metrics locally without an internet connection.
2. When ready to upload, run wandb init in your directory to set the project name.
3. Use wandb sync YOUR_RUN_DIRECTORY to transfer metrics to the cloud service and access results in the hosted web app.

To confirm the run is offline, check run.settings._offline or run.settings.mode after executing wandb.init().