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ray-train

Distributed training orchestration across clusters. Scales PyTorch/TensorFlow/HuggingFace from laptop to 1000s of nodes. Built-in hyperparameter tuning with Ray Tune, fault tolerance, elastic scaling. Use when training massive models across multiple machines or running distributed hyperparameter sweeps.

backend/cli/skills/ml-training/ray-train/SKILL.md

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# Ray Train - Distributed Training Synthetic Sciencestion

## Quick start

Ray Train scales machine learning training from single GPU to multi-node clusters with minimal code changes.

**Installation**:
```bash
pip install -U "ray[train]"
```

**Basic PyTorch training** (single node):

```python