GB0142

Graph-Break Type

Short name describing what triggered the graph break

Unsupported context manager

Values or code snippet captured at the break point

Attempted SETUP_WITH/BEFORE_WITH on {ctx}

Explanation of why the graph break was triggered

Dynamo does not know how to enter a {ctx.python_type_name()} context manager.

Hints on how to resolve the graph break

Avoid using the unsupported context manager.
If the context manager seems like it should be supported (e.g. torch.set_grad_enabled), then
it may be the case that it was created outside the compiled region, which Dynamo does not support.
Supported context managers can cross graph break boundaries only if they are local non-closure
variables, or are intermediate values.
File an issue to PyTorch. Simple context managers can potentially be supported,
but note that context managers can’t be supported in general