Problem

Scheduler-planned recompilation resets Dynamo and replaces compiled graphs. DeepCompile's forward inputs, compiled-backward frames, and process-global compiler configuration and constructor patch need explicit lifecycle ownership so prior graph state can be released without disturbing another engine.

Approach

• Keep forward inputs in graph-local queues and storage.
• Track compiled-backward frames and Dynamo configuration ownership per engine.
• Clear prior-cycle compiled-backward state at scheduled resets.
• Make the graph-specific AotAutograd.__init__ patch restorable and ownership-safe.
• Release engine-owned compiler state during normal deactivation and destruction.

Testing

• Focused compile lifecycle unit tests on macOS and a clean single-node 1xH100 environment.
• Existing compile regression tests.
• Full repository pre-commit hooks.