What does wandb.init do to my training process?

When wandb.init() runs in a training script, an API call creates a run object on the W&B servers. A new process starts to stream and collect metrics so the primary process can function normally. The script writes to local files while the separate process streams data, including system metrics, to the W&B servers.

To turn off streaming, run wandb off from the training directory or set the WANDB_MODE environment variable to offline.

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Environment Variables Experiments