* improve backward performance

* support different dtypes for elementwise ops

* move kernel_primitives

* use pten's errors

* Migrate Dim and DDim from paddle::framework into pten namespace

* fix paddle::framework::Array

* fix framework::Array

* No harm to KP

* Pass the compile stage

* change the WriteData function

* fix template bugs and pass ctest of current elementwise

* for passing partial template specialization of tempalte function in CI-ROCm

* To make 'WriteData' funtion flexible.

* a less harmful way to support multi-output

* a less harmful way to support multi-output

* Modify reduce_op.op.h for xpu2 with kernel primitive api

* Update the implement of reduceAnyKernel according to kernel primitive api
* Fix a bug in ReadData, ReadDataBc and ReadDataReduce when NX != 1

* add ElementwiseTernary, Reduce, ReadDataStride

添加Kernel primitives api： ReadData, WriteData ComputeFunctor

This PR add some primitives api related files. Those files are almost empty for the moment, but will be filled later.

* Add dlnne engine runtime

* Fix log

* Remove <const_cast> and remove unrelated modify with dlnne, +clang-format

* Fix CMakeList format error

* Add copyright message

* Fix dlnne CMakeList.txt

* Add some paddlepaddle_pass to support more networks

* Fix some format bug

test=develop

add python inference api

fix cmake again
test=develop

Add the demo of subgraph splitter

* Update tensor_util.h

* Update with moved TensorDesc

* Fix tensur_utils.cu

* Update

* Update

* Update

* Update

* Make tensor_util.cu a symbolic link