GitLab

* [Fix] Fix the bug that training log and evaluating log are mixed

* [Fix] Fix the bug that training log and evaluating log are mixed

* fix comment

* fix import error

* refactor

* refactor

* refactor

* clear log_buffer before evaluation

* fix error

* add unittest

* EvalHook uses case-insensitive key indicator matching and configurable test functions

* * fix docstring

* * move test_fn import into __init__
* configurable greater/less keys

* * update unittest
* update DistEvalHook

* fix comments and remove debug code

* support single greater/less key

* add EvalHook

* add EvalHook

* refactor docstring

* polish

* use cp instead symlink

* add error info

* Update eval.py

* Update eval.py

* update

* add engine depandancy

* add comments

* fix unittest

* fix

* update unittest

* update unittest

* add docstring

* fix docstring