* add depend

* fp16 pass distinguish None & False

* engine log

* [CodeStyle][py2][U008] remove unnecessary args in `super()` for some example code

* empty commit, test=document_fix

[CodeStyle][py2][py311] replace deprecated `inspect.getargspec` with `inspect.getfullargspec` (#48218)

* [CodeStyle][py2] use inspect.getfullargspect instead of deprecated inspect.getargspec

* refactor to f-string

* remove apis in fluid.ops

* fix test_activation_nn_grad

* fix circle import error

* fix ops

* fix cos

* fix divide not inplace

* remove lazy-import part

* clear fluid apis in fleet and passes

* fix model.py

* fix model.py

* fix cpp_pass.py

* [AutoParallel] selective recompute

* add cmakelist

* clean fluid elementwise_min

* fix elementwise_min op testcase

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [remove fluid] under fleet meta_optimizers

* [CodeStyle][F821] fix remained F821 issues

* refine comment

* fix _set_item

[CodeStyle][F821] fix undefined variables due to missing imports, misspelled variable names (#47899)

* `hann` -> `_hann`

* `false` -> `False`

* a missing passed argument `reduce_all`

* some missing imports

* `device_type` -> `heter_device_type`

* `PKVClient` -> `KVClient`

* fix some typos and missing imports

* fixed cond state

* fixed cond state

* add recompute doc.

* add recompute doc.

* add recompute doc.

* update.

* update.

* add c_concat pass for reshard

* add unittest

* XPU support eager mode

* add unittest for XPU eager mode

* minor bugfix

* minor bugfix, test=kunlun

* correct copyright info

* 1. remove unsed vars/funcs
2. ProcessGroupBKCL inherit from ProcessGroupStream

* bugfix for fp16 in eager mode multi-card, test=kunlun

* rebase & fix a few issues

* use new processgroup interface, test=kunlun

* fix compile issue, test=kunlun

* fix insert concat op

* fix fp16 assert

* fix flake8 CodeStyle E266

* fix comments

[Auto Parallel] Sharding Optimization：Partition Algorithm & Stage2 Parameter Bucket communication  (#47180)

* partition param by order

* add logging

* reorder opt

* config

* stage2 bucket

* update unitest

* [CodeStyle][py2][U004] unecessary explicit `object` inheritance in class definition

* fix an increment

* fp16 pass support assign op

* choose assign op exec mode

* add unittest

* add cmakelist

* [CodeStyle][E262][E265] make comments start with `# `

* flake8 config