XLA dumps are not generated after setting XLA_FLAGS="--xla_dump_to=/some/path"

[reza-amd]

I was running the unit test //tensorflow/compiler/tests:categorical_op_test_gpu and wanted to see the XLA dumps for this unit test. I set the --xla_dump_to to a correct path, but dump files were never generated (the setup is correct as for other tests, It can generate XLA dumps).

I tried to investigate this issue further and I found that detailed_logging has been hard coded to false in this location. This value is being used later on in here to reset the dump_to path.

With this empty value for dump_to, it will never generate the files even though xla_dump_to has been set. This behavior is contradictive to the XLA documentation described here