* move operators/math/math_function_* to pten/kernels/func
* namespace from `paddle::operators::math` to `pten::funcs`

* improve backward performance

* support different dtypes for elementwise ops

* fix code conflict

* generate inter_meta register

* clear cache

* just try

* add sign c++ api

* polish some code

* move masked select cpu kernel

* add masked selected gpu kernel; test=develop

* fix bugs; test=develop

* bug fix; test=develop

* bug fix; test=develop

* add namespace to set mask array; test=develop

* fix bug; test=develop

* fix bugs; test=develop

* fix ddim bug; test=develop

* fix npu op bug; test=develop

* fix xpu dependecy bug; test=develop

* move kernel args to sig.cc; test=develop

* add dropout

* add reshape

* add slice

* refien slice unittest

* refine slice unittest

* add cpu bf16 kernel

* fix code conflict

* clear cache

* just try

* adjust the Empyt dev_api

* fix merge conflict

* fix sparse_utils_kernel

* add trace op

* bug fix

* bug fix; test=develop

* thrust bug fix; test=develop

* remove useless register; test=develop

* fix bug; test=develop

* update trace kernel; test=develop

* move kernel args to trace_sig; test=develop

* try to fix trace kernel conflict; test=develop

* implement AllocateFrom

* dense_to_sparse_coo

* optimize unit testing; support rocm

* 1. delete fluid related header file
2. update the copyright

* fix hipMemcpy

* update dense_to_sparsecoo

* add namespace sparse

* sparse_csr_to_dense

* test to_sparse_coo: csr_to_coo

* fix writing error

* to_sparse_csr: dense_to_sparse_csr and sparse_coo_to_csr

* fix check shape

* fix unit test

* to_dense: sparse_coo_to_dense, sparse_csr_to_dense

* replace CUDADeviceContext by GPUContext

* add trace op

* bug fix

* bug fix; test=develop

* thrust bug fix; test=develop

* remove useless register; test=develop

* fix bug; test=develop

* update trace kernel; test=develop

* move kernel args to trace_sig; test=develop

* implement AllocateFrom

* dense_to_sparse_coo

* optimize unit testing; support rocm

* 1. delete fluid related header file
2. update the copyright

* fix hipMemcpy

* update dense_to_sparsecoo

* add namespace sparse

* sparse_csr_to_dense

* test to_sparse_coo: csr_to_coo

* fix writing error

* to_sparse_csr: dense_to_sparse_csr and sparse_coo_to_csr

* fix check shape

* fix unit test

* replace CUDADeviceContext by GPUContext

* add norm cpu

* update code;

* norm bug fix

* move norm op to pten; test=develop

* move norm op to pten; test=develop

* add norm util; test=develop

* fix norm npu bug; test=develop

* fix norm kernel bug; test=develop

* move kernel args to pten; test=develop

* move kernel args to pten sig; test=develop

* add concat & split

* add concat kernel

* add concat unittest

* add split unittest

* Replace clip, bce_loss, full and full_like with elementwise

* fix pten reduce dispatch bug

* add cast beforce reduce

* fix test failed

* add data_transform in pten api

* support GetKernelTypeForVar

* fix complie problem of bfloat16

* change error namespace

* add complex type transform unittest

* fix merge conflict

* dense_to_sparse_coo

* optimize unit testing; support rocm

* 1. delete fluid related header file
2. update the copyright

* fix hipMemcpy

* update dense_to_sparsecoo

* add namespace sparse

* sparse_csr_to_dense

* test to_sparse_coo: csr_to_coo

* fix writing error

* change unary infermeta

* change other infermeta

* change all infermeta format

* resolve conflit

* fix test failed

* resolve reshape conflit

* fix compile failed

* adapt auto api gen

* fix reshape failed

* fix concat failed

* resolve conflict

* dense_to_sparse_coo

* optimize unit testing; support rocm

* 1. delete fluid related header file
2. update the copyright

* fix hipMemcpy

* update dense_to_sparsecoo

* add namespace sparse

* open header for custom kernel

* add core utils

* tidy core code

* tify header

* tidy include

* tidy namespace

* resolve conflit

* fix unittest and coverage

* remove platform using

* resolve conflict

* resolve conflict

* fix digamma namespace error

* fix xpu full kernel error

* fix xpu full kernel error

* polish details

* add place for lib storage

* refactor scale kernel that its input is selected_rows

* complement upload file

* move digamma to pten; test=develop

* fix mutable_data bugs; test=develop

* remove useless code; test=develop

* remove kernel compute; test=develop

* fix bug; test=develop

* Support allocate_from in Tensor and allocate_data in Context

* fix #ifdef CUDA

* fix cycle depends

* fix test_xxx_dev_api failed

* fix windows compiling error

* fix unittest

* modify into PImpl

* fix selected rows

* add TODO comment

* refine interface according reviewer

* add full_kernel xpu

* fix full xpu register device type error

* fix full kernel bug

* add fulllike kernel impl and replace with raw kernel

* fix dev_ctx convert template args error

* modify namespace and header file

* add isinf check

* fix input type args in TensorSetConstantXPU error

* fix bug:
1. atten: set the default value of attn_dropout_rate to None
2. ffn: add activation parameter

* for pure fp16

* Add a SparseCsrTensor

* remove unused functional

* remove const

* remove SetMemoberTensor

* remove non_zero_nums_, the number of non zero elements of each batch can be obtained from the crows

* SparseCooTensor

* add SetMember

* merge upstream; add SetMember

* merge upstream

* merge upstream; add newline at end of file

* add newline at end of file

* remove newline at end of file

* remove newline at end of file

* stash

* user pten::framework::make_ddim

* user pten::framework::make_ddim

* merge upstream; use the latest mutable_data

* merge upstream; use the latest mutable_data

* return mutable dense tensor

* update cmake file to remove fluid kernel

* add pten declaration.h to where pybind.h used

* fix sync_bn and tensorrt_engine

* refine detection_library

* fix interpreter_core

* support eager legacy

* fit eager legacy for pten

* fall back to cpu if not found kernel

* fix compile problem

* fix compile problem

* refine fallback logic

* fit operator.run()

* fix xpu compile

* fit for new_exec

* add REGISTER_OP_WITHOUT_GRADIENT

* un-cache pt_kernel_context

* fix compile

* fix cudnn

* fix compiling with on_infer

* fix mkldnn

* fix isfinite_v2

* fix xpu problem

* fix op_device

* refine fallback for xpu

* fix xpu compile

* merge develop

* refine code format

* fix compile

* fix compile

* add data_transfer

* fix PreparePtenData

* fix cpu context

* merge develop

* fix compile

* fix error device context

* fix xpu

* fix dev_ctx

* cast xpu kernel init

* cast xpu kernel

* replace with raw cast xpu kernel

* fix cast kernel bug

* add the missing break

* modify namespace and header file

* move kernel_primitives

* use pten's errors

This reverts commit 9059ef69.