GitLab

* fix tests.

* fix.

* remove a test.

* make code work in the standalone mode.

* fix example.

* more fix.

* make DistDataloader work with num_workers=0

* fix DistDataloader tests.

* fix.

* fix lint.

* fix cleanup.

* fix test

* remove unnecessary code.

* remove tests.

* fix.

* fix.

* fix.

* fix example

* fix.

* fix.

* fix launch script.
Co-authored-by: Jinjing Zhou <VoVAllen@users.noreply.github.com>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-19-1.us-west-2.compute.internal>