* Add EagerTensor and tests

* remove useless enforce

* remove comment in cmake

* support autograd meta

* support grad node info test

* support grad_node_info

* add more edge test

* remove Python.h

* add tensor wrapper with tests

* support compute require grad and stop gradient

* support sync methods and global utils

* support pure cpu test

* refine error msg

* refine error msg

* refine error info

* fix npu error

* fix inplace bug

* fix custom grad input error

* add unittest

* fix inplace bug

* [XPU] Reorganize xpu device codes in platform, test=develop

* fix xpu_header.h, test=develop

Add support for bias is none for fused_attention op.

* modify code about fp16 of dcnv2 trt

* sync scope and variable_scope when init executor

* set var_desc for new var

* test on_infer off problem in windows

* turn off on infer in windows-ci

Fix PR-CI-Static-Check

* fix ut retry

* fix_nearest

* fix_nearest

* fix_nearest

* fix_nearest

* for pure fp16

* opt topk

* modify for wincheck-inference case

* modify according to zhouwei's comment

* modify according to zhouwei's comment 2nd time
Co-authored-by: Nzhangkaihuo <zhangkaihuo@baidu.com>

* enhance scatter err msg check

* fix ci error

* elementwise_div refactor

* fix compile bugs in windows ci

* Add EagerTensor and tests

* remove useless enforce

* remove comment in cmake

* support autograd meta

* support grad node info test

* support grad_node_info

* add more edge test

* remove Python.h

* refine error code

* add error type in error msg

* given default null name for tensor

* Added HCCL backend support in dynamic graph mode

* fix segmentation fault

* add ut

* Bug fix for snapshoting VariableWrapper with initialized tensor but empty allocation

* Added unittest for inplace&clear_gradient

* rename to api to copy_to

* support cast method for tensor

* fix compile failed

* adapt to inference api dir for pten

* fix conflit with develop

* fix test_egr_ds_eager_tensor compile failed

* Add transfer_layout/dtype op

* clean useless codes

* fix unused var

* add optest in white.txt

* split into data_transfer.cc

* fix cmake

* modify according reviewer comment

* replace cast_op with transfer_dtype_op

* disable copying of datatype when sharing buffer between two tensors.
* fix for mkldnn operator kernels (elementwise_add, sum, softplus, softmax, scale, activation), mannually set the data type when reusing memory by ShareBufferWith.

* add isclose op, test=develop

* add isclose op, test=develop

* add isclose api, test=develop

* rm useless code

* rm useless code

* update python api of isclose

* add some unittest of isclose op, test=develop

Fix CI build error

* support zero dim for slice op

* support zero dim Tensor in set_value op

* polish some debug log

* Removed one ENFORCE statement

* Changed func name to _share_buffer_to

* Improve error reporting information

* Updated the logic of _is_share_buffer_to func

* Add EagerTensor and tests

* remove useless enforce

* remove comment in cmake

* fix test_error

* add depends on python

* Remove python.h

* Merge develop and add Eager tensor with test back

* add cast kernel

* add cast cuda kernel

* add cast kernel

* make cast kernel output dtype undefined

* get cast dtype from vardesc

* move cast to manipulation and add test case

* add castinfershape

* avoid reinitilaze variable

* InitializeVariable support datatype

* merge develop branch

* fix merge bug

* revert modify initializeVariable

* revert modify on InitializeVariable

* revert modify on InitializeVariable

* mutable support reset dtype

* enable make pten tensor from variable when def_arg.type is undefined

* fix build pten ctx start_idx error

* copy pten out tensor to variable

* merge develop branch

* fix non pten kernel cast failed

* add reset allocation place for remake tensor

* fix inplace realloc error

* add mutable on pten kernles and remove unused cast files

* rename function names

* fix output type error

* fix conflict with develop branch

* set data type to variable with pten's dtype

* fix test_cast_api type mismatch

* densorTensro mutable_data support 0 bytes value

* fix the inplace bug of reshape kernel

* fix pten.backend != variable.place when moving storage, palce mismatch bug

* fix conflict with develop branch

* Fix bug of paddle::experimental::MovesStorage

* fix ReMakePtenDenseTensor place mismatch bug

* Revert "fix ReMakePtenDenseTensor place mismatch bug"

This reverts commit 86336032f60b8a15eacd2c1ff2fa513f5d8dfd1a.

* fix ReMakePtenDenseTensor place mismatch bug

* reverts the set_lod interface, test=develop

* modify by the review options

* modify error message

* add & for const input arguments

* add reference in params

* elementwise_sub add mutable_data

* fix ResetHolderWithType check size bug

* add dependence pten_tensor to test_cast_api object

* remove unused code to pass ci coverage
Co-authored-by: NChen Weihang <chenweihang@baidu.com>
Co-authored-by: NYuanRisheng <yuanrisheng@baidu.com>
Co-authored-by: Nshixiaowei02 <39303645+Shixiaowei02@users.noreply.github.com>