GitLab

* dist spec s2s uses all-to-all

* update unit test

* add sanity check

* polish unitest test with titans

* add sanity check for DistMgr

* add sanity check
Co-authored-by: jiaruifang <fangjiarui123@gmail.com>

* refactor colo-tensor and update linear op

* polish code

* polish code

* update ops and unit tests

* update unit tests

* polish code

* rename dist_spec module

* polish code

* polish code

* remove unneeded import

* fix pipelinable

* add dist spec

* update linear op

* polish code

* polish code

* update embedding op

* polish unit tests

* polish unit tests

* polish comments

* polish code

* add test_dist_spec_mgr

* polish code

* refactor folder structure

* polish unit tests

* add get_process_group() for TensorSpec

* polish code