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

* Optimize performance of softmax_bwd when axis!=-1

* fix

* fix

* fix

* fix

* bilinear_fw init

* optimize code

* pre-compute linear_interp input index

* move grad get expected pten kernel args

* fix reduce sum error

* fix element_sub_grad failed

* revert kernel judge change

* improve backward performance

* support different dtypes for elementwise ops

* [MLU] add mlu kernel for accuracy op

* fix license format

* fix error message

[NPU] add reduce_min

* 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

* optimize conv1d forward

* add conv opt

* Optimize memory copy

* delete share data with

* set num_filters=512

* add nlc optimize

* Optimize num_filter=512 data on A100 and V100

* Fix the workspace_size size setting of filter

* add squeeze unsqueeze stack

* add unittest

* add cpu kernel

* add dropout

* add reshape

* add slice

* refien slice unittest

* refine slice unittest

* add cpu bf16 kernel

* update isnan registration

* fix compile

* Optimize performence of softmax_fwd when axis!=-1

* use functor

* support hip

* fix functor

* merge legacy to fluid

* Remove legacy code

* Remove legacy code

* Remove DataType test

* Using Tensor directly instead of using EagerTensor

* support gradient_accumulation

* make test_imperative_lod_tensor_to_selected_rows longer

* make test_imperative_lod_tensor_to_selected_rows longer

* 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

* 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 more int id type support for embedding

* add ut

* add more ut

* fix ci error

* - 38126 potential fix

* - fix

* - build fix

* - another candidate fix

* - compilation fix

* - another fix

* - Fix to activation of NHWC being first oneDNN op in chain on oneDNN ops

* - compilation fix

* - added NHWC reotating for elementwise being first op

* - compilation fix

* - compilation fix

* - Added UT

* - cosmetic fixes

* add concat & split

* add concat kernel

* add concat unittest

* add split unittest

* gpu_context..

* update

* update

* update

* Replace clip, bce_loss, full and full_like with elementwise

* adapt selectedrows in execution

* impl selected rows branch

* support selectedrow in infershape utils

* fix device compile failed

* fix new exe test failed

* revert some changes

* Added adam kernel

* CI rerun

* Add fp16 support for scale/bias for fused_layernnorm_residual_dropout_bias op.

* Remove useless code.

* Remove useless code.

* Optimize layer_norm fwd when cols is 1024.

* Remove useless code.

* Minors.

* Minors.

* Modifications accordding to reviews.

* Minors.

* Optimize layer_norm bwd kernel when cols is 1024.

* Polish layer_norm_bwd_1024 kernel.

* Limit ln_bwd_1024_kernel to paddle_with_cuda.

* Fix double type compile error.

* Add optimization of ln bwd for fused_dropout_add_ln op.

* Polish codes.

* 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