GitLab

* fix bug in slicer, add slicer unit test

* add dropout test

* use pid as dropout seed

* updata dropout test with local pattern

* ad todo

* add bert align test, fix dist loss bug

* forward and backward align

* add ignore index

* add shardformer CI

* add gather_output optional for user in shardconfig

* update readme with optional gather_ouput

* add dist crossentropy loss test, remove unused files

* remove unused file

* remove unused file

* rename the file

* polish code