ultralytics 8.3.81

v8.3.81 - `ultralytics 8.3.81` Fix Metrics `on_plot` circular references (#19318)

on Python PyPI

🌟 Summary

The Ultralytics v8.3.81 release resolves a critical memory management issue in model validation while introducing key updates to documentation, testing workflows, and system reporting for enhanced usability and efficiency. 🚀✨

📊 Key Changes

• 🧹 Memory Leak Fix in Validation Modules:
  Resolved circular references in metrics (on_plot) across validators (DetectionValidator, PoseValidator, etc.) to avoid CPU memory leaks during repeated evaluations.
• 📚 Documentation Enhancements:
  Added examples for annotators in the library, and fixed/corrected metadata instructions for Triton guides and links in SAM 2 documentation.
• 🐧 Raspberry Pi CI Improvements:
  Re-enabled Raspberry Pi CI workflow with improved benchmarks and added cleanup for self-hosted CI runners.
• 🔍 Installation Diagnostics Update:
  Added project root installation path in the system environment summary for easier debugging.
• 📊 Better Table Sorting in Docs:
  Improved table sorting functionality for file sizes, numbers, and dot-separated values.

🎯 Purpose & Impact

• Memory Management Improvement:
  Eliminates residual memory accumulation when evaluating models repeatedly in scripts, preventing CPU overloading and Out-Of-Memory (OOM) errors. This fix improves the efficiency and reliability of long-running evaluation pipelines. 🧠🔥
• User-Friendly Documentation:
  New usage examples and enhanced instructions make it easier for developers to understand and implement key features. Correcting SAM 2 links ensures access to the right research resources. 📚💡
• Expanded Testing Coverage:
  Re-enabling Raspberry Pi CI and adding benchmarks enhances testing on diverse hardware, ensuring broader reliability across platforms. Improved CI cleanup reduces risks of resource conflicts. 🌐🔧
• Debugging Simplification:
  Including installation paths in diagnostics facilitates resolving Python environment-related issues for developers. 🔍🛠️
• Enhanced Sorting for Visual Data:
  Improved table sorting in docs boosts usability, especially when navigating large datasets or results with complex numbering or file size values. 📈✨

Overall, this update strengthens performance, stability, and developer experience, while prioritizing clarity and usability for the broader community. 🎉

What's Changed

• Update Raspberry Pi 5 CIs with 16GB model by @lakshanthad in #19306
• New: add SAM and SAM-2 notebook in docs by @RizwanMunawar in #19461
• Add installation path to yolo checks output by @Y-T-G in #19463
• Clarify metadata instructions in Triton docs by @Y-T-G in #19457
• Fix Docs table number sorting by @Y-T-G in #19455
• Add examples for plotting reference by @RizwanMunawar in #19439
• Update SAM 2 research paper links by @joshua-dean in #19465
• Clean up Raspberry Pi CI runners by @lakshanthad in #19478
• ultralytics 8.3.81 Fix Metrics on_plot circular references by @RemiPT in #19318

New Contributors

• @joshua-dean made their first contribution in #19465
• @RemiPT made their first contribution in #19318

Full Changelog: v8.3.80...v8.3.81