* Enhance grep syntax to avoid random failed

* Enhance grep syntax to avoid random failed

* Add param_guard in ParameterList to support @to_static

* Refactor param_guard of @to_static

* fix unittest failed

* add more unittest

* unit double

* unit double

* fix the paddle compare op for the broadcast

* fix compare op in for in the cuda device

* fix precision of mp

* fix bug of seed

* fix dp

* print group

* doc of paddle.save/load

* polish doc of paddle.save/load

* add use_global_beta_pow

* add use_global_beta_pow

* update npu kernel

* update python api

* refine code

* add ut for use_global_beta_pow

* fix npu kernel

* add ut for api

* add ut for exception

* add ut for save/load

* fix windows CI

* fix windows CI

* Fix comments in framework

* Update framework.py

* fix dataloader exit hang when join re-enter. test=develop

* fix cpp lint
* fix save/load with unexpected value
* fix save and user interface

* add varbasecopy func to fix the paraBase type bug in layers.to API

* overload _copy_to func for ParamBase

* add xpuplace

* add waiting varbsecopy completion when not blocking

* fix dst_device bug

* modify varbase to shared_ptr

* polish test decoupled py reader

* remove bin file

* fix retry in download when exception occurs

* fix find_unused_parameters default value

* add trainprofiler for heterps in oneps; test=develop

* add set_use_ps_gpu; test=develop

* add c_identity_op_npu