Zero-Downtime PyTorch Upgrade in Production: Approaches, Pitfalls and Lessons

This detailed blog post by Pinterest outlines their journey of upgrading the PyTorch framework in production without causing downtime. It discusses challenges like outdated dependencies, breaking API changes, and specific issues encountered during the upgrade process. Key strategies included careful planning, progressive rollout, and efficient troubleshooting, underscoring the importance of cross-stack engineering to maintain performance and stability across systems.