Running Tutorial 06 hangs

[joyeshmishra]

Objective of issue: Running Tutorial 06 hangs

Lava version:

• 0.4.0 (feature release)
• 0.3.1 (bug fixes)
• 0.3.0 (current version)
• 0.2.0
• 0.1.2

I'm submitting a ...

• bug report
• feature request
• documentation request

Current behavior:

• Hangs

Expected behavior:

• Should complete

Steps to reproduce:

• Just run the tutorial

Related code:

Tutorial 06 Hangs due to unhandled dangling port. Please check out commit 1881948 to replicate.

Other information:

[joyeshmishra]

In builder.py::PyProcessBuilder

            if issubclass(port_cls, PyInPort):
                transformer = VirtualPortTransformer(
                    self._csp_port_map[name],
                    p.transform_funcs
                ) if p.transform_funcs else IdentityTransformer()
                port_cls = ty.cast(ty.Type[PyInPort], lt.cls)
                port = port_cls(csp_ports, pm, p.shape, lt.d_type, transformer)

Here, if the layer is simple, then we create an IdentityTransformer for the dangling unconnected port. If the layer is part of a hierarchical sub model, then the transform_funcs is not None and hence the code fails in self._csp_port_map[name] as there was no CSP port associated with this dangling unconnected PyInPort.

Proposal - Should check if transform_funcs exist, if so and if name does not exist in csp_port_map, log a warning that it is possibly a dangling port and return the same IdentityTransformer(). Make this in CProcessBuilder as well.

[mathisrichter]

This will be fixed by https://github.com/intel-innersource/frameworks.ai.lava.lava/pull/117

[mgkwill]

This will be fixed by intel-innersource/frameworks.ai.lava.lava#117

I'm guessing this is fixed and can be closed now that the PR is merged?

[joyeshmishra]

Verified Tutorial 06 Works. Closing.