* add skd distillation. (#1587)

* add skd distillation.

* update skd's test.

* [ACT] add loss info (#1597)

* add loss info on ACT training.

* Add flops info.

* optimization yaml

* update yaml

* update yaml

* fix unittest

* fix unittest

* fix distiller

* fix distiller

* fix distiller

* demo imagenet

* demo imagenet

* add source-free

* add source-free

* add asp

* update

* add fleet

* add docs

* rename

* fix unittest

quant aware with infer model

* fix dml issue

* disable multiprocess reader

* add other model

* add dml unittest

* fix log_softmax

* make dml compatible with 1.8 and 2.0 version paddle

* fix coverage