Fix Nondeterministic

[ju-w]

An easy workaround to fix #168

[fdraxler]

Hi,

thanks debugging this issue and proposing a fix! I have one concern though: Even if the execution order in the graph is not ambiguous (due to only sequential nodes), but existing code did not pass the right order of nodes to the GraphINN, then existing checkpoints would break. Would you agree that using a defaultset(list) in

FrEIA/FrEIA/framework/graph_inn/graph_inn.py

Line 258 in 6912465

edges_in_to_out = defaultdict(set)

would also yield a deterministic order?

Best! Felix

[ju-w]

Hi!
This is by no means supposed to be an ideal solution, just one that fixed my particular issue. I don't really have the patience or time to dig into potential corner cases, so please feel free to redo this as you please!

[ju-w]

This was merely supposed to be a workaround, but as you are now aware of the problem and actively working on it, I will close this PR.