Deprecations fix TORCH_NCCL_BLOCKING_WAIT

[glenn-jocher]

@Laughing-q should resolve DDP warning

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved network communication setup for distributed training.

📊 Key Changes

• Changed an environment variable from NCCL_BLOCKING_WAIT to TORCH_NCCL_BLOCKING_WAIT to better manage timeouts in distributed training.

🎯 Purpose & Impact

• Purpose: This change aims to enhance the reliability and efficiency of network communications in distributed deep learning scenarios.
• Impact: Users may experience more stable and consistent training sessions across multiple GPUs, especially in environments prone to network issues. This could lead to faster training times and potentially better model performance. 🚀📈

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

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Flag	Coverage Δ
GPU	38.35% <100.00%> (?)

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[glenn-jocher]

@Laughing-q it works!! Warning is fixed :)