Compiling graphs about tf-encrypted

[mortendahl]

I think you can still have placeholders in the compiled graph, no? Ah no, "feeds" seems to be different than placeholders!

[justin1121]

Further investigation has gone into using XLA to compile graphs and doesn't really seem beneficial at this point.

[mortendahl]

this might be an issue: "the resulting pruned subgraph cannot contain Placeholder or Variable nodes"

[morgangiraud]

tfcompile is made to be used for inference purpose, so as long as we can freeze a graph to remove variables, we're fine with the Variable limitation.

About the placeholders, I guess you can always tfcompile from the first operation after placeholders , no?

[mortendahl]

next step could be to simply get a compiled version of TensorFlow with XLA support running

[justin1121]

See this comment https://github.com/mortendahl/tf-encrypted/issues/229#issuecomment-462420840.