GB0075

Graph-Break Type

Short name describing what triggered the graph break

LOAD_BUILD_CLASS bytecode not supported

Values or code snippet captured at the break point

Explanation of why the graph break was triggered

Dynamo does not support tracing classes that are defined in the compiled region.

Hints on how to resolve the graph break

Move the class definition out of the compiled region.
It may be possible to write Dynamo tracing rules for this code. Please report an issue to PyTorch if you encounter this graph break often and it is causing performance issues.