* fix path error on windows when precision switch is turn on

* fix error

* Update get_pr_ut.py

fix format error

* Update get_pr_ut.py

* Unify all external API error message mechanism and enhance third-party API error msg

* fix some comment

* fix some comment

* added op cast functionality for fp32/bf16

* added newline

* added entries in static mode white list and unity build

* fixed failing tests

* changes after review

* added formatting

* upgraded tests file as reviewer suggested

* changes after review

* minor change

* fix model_benchmark ci

* ADD proto_so

* fix ninja compilation bug on windows

* polish windows ci

* polish windows ci

This reverts commit 0e5d832c.

* fix model_bhecnmark ci

* fix model_bhecnmark ci

* add complex template file

* add numtraits for complex template

* add complex template type register

* modify specify template of complex

* modify specify template of complex

* modify specify template of complex

* modify specify template of complex

* make TensorCheckerVisitor support complex type

* fix operator= error

* add complex template

* add complex template type

* add complex template type to pyarray transform

* add complex template type to pyarray transform

* remove complex type for dlpack register

* set dlpack supprot complex type

* set dlpack supprot complex type

* set dlpack supprot complex type

* remove explict for complex constructor

* add complex unit test file

* remove ut from parallel_ut list

* remove some timeout ut

use the `required` instruction to determine if the environment fits the sample code's required. (#32766)

* add unittests

* add find_last_future_line_end

* extract_code_blocks_from_docstr and its testcases

* test_codeblock_before_examples_is_ignored

* sampcd_extract_to_file 拆为两步

* update the codeblock element's format

* code-block directive has no value options

* insert the CODES_INTERTED_INTO_FRONTEND

* using the new func insert_codes_into_codeblock

* get_test_capacity and is_required_match

* using the new funcitons in sampcd_extract_to_file

* add some comments and refactor functions

* using logger instead of all the print

* remote wlist

* collect summary info, and print them

* call get capacity

* update summary format

* print the apis that don't have sample codes.

* print the samples the consumed time more than 10s.

print time

* update unittest testcases

* solve ResourceWarning: unclosed file

* run tools test seperately

* python2 does not have nonlocal keyword, using dict variable instead

* remove unused import, rearrange a series of conditional statements.

* remove wlist.json and its check approval

* remove wlist.json and its check approval

* fix windows CI

* fix windows CI

This reverts commit 92adeceb.

* Remove paddle_custom_op dynamic libraries, change link to FLUID_CORE on windows, and check copy_to

* fix CI

* add relu6_ hardsigmoid_ leaky_relu_ Inplace APIs

* add softmax_with_cross_entropy_ Inplace API

* add clip_ scale_ add_ subtract_ Inplace APIs

* add wlist

* fix parameter of scale api

* add add_n_ Inplace API and remove log_ Inplace API

* fix elementwise_add_ and elementwise_sub_ broadcast problem

* elementwise inplace api give error message before run the op

* use broadcast_shape in elementwise inplace op

* add 8 inplace apis that is auto generated

* add unittest for all inplace apis

* add decorator for inplace apis in static mode

* fix windows blas fail of exp inplace api, change array_equal to allclose

* add flatten inplace api

* add flatten unittest

* fix flatten unittest

* add decorator

* fix grad.numpy in test_pylayer_op

* unsupport softmax_with_cross_entropy_

* add test_inplace_softmax_with_cross_entropy to static_mode_white_list

* delete __all__ in inplace_utils

* delete activation inplace function and add Tensor.inplace_func

* change paddle.inplace_ to Tensor.inplace_

* fix little problem

* add paddle in inplace_utils

* 单测全量列表修改

* 单测全量列表修改

* 去除挂掉的windows单测

* 去除挂掉的windows单测

* Add bf16 uniform random initializer

* Remove duplicated section

* Change UT to CPU place only

* Put detail functions into anonymous namespace

* support cuda11.2 and using gcc5.4 in cuda10.1

* fix manylinux py36 bug

* support cuda11.2

* fix python36 pip version problem in ubuntu

* save cuda11.0

* edit paddle.save/load API

* Update io.py

edit doc

* delete cpython-37.pyc

* Update io.py

edit doc

* Update io.py

recommit

* Update io.py

recommit

* Update io.py

recommit

* Update io.py

recommit

* UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 1788: ordinal not in range(128)

test=document_fix

str(doc) in python2

test=document_fix

* update md5 function in count_api_without_core_ops.py

str in py2 is different.

test=document_fix

* clear CUDA compile environment on windows

* fix Windows CI

* fix Windows CI

* fix Windows CI

* update testcases

* remove unused codes

* update the docstring for samcd_processor

* no need to import the six module

* 我也不知道为何有一个前导空格，但现在有单元测试，取消这个空格没啥问题

* add unittests for print_signatures; add the first case for 'required' mechanism when executing sample code testing

* there is no paddle installed in PR-CI-APPROVAL

test=document_fix

* support python39 and delete python35

* support python39 in Dockerfile.centos

* fix ubuntu18 bug

* update Dockerfile.ubuntu setuptools

* fix centos py39 errors

* fix centos py39 error2

* support save/load binary format tensor

* Fix error when create cudaplace

* Fix error when create cudaplace

* Fix error when create cudaplace

* get devive context from pool.

* move define of 'SerializeToStream' and 'DeserializeFromStream' to 'lod_tensor.cc' and 'selected_rows.cc'.

* support complex object

* improve coverage.

* improve coverage

* improve coverage.

* fix a bug.

* polish API

* save/load program

* paddle.save/load: layer

* deal with conflict

* if PY2, block test_paddle_save_load.TestSaveLoadLayer

* polish code.

* polish code

* edit unnittest

* The condition for object to be identified as state_dict becomes strict

* use 'core._cuda_synchronize'