* nearest_interp_bw init

* optimize kernel config

* optimize kernel config

* fix struct init

* optimize code

* rm duplicated struct

* move cross forward OP

* move cross grad op to phi

* move infershape

* refine infershape

* rename ctx

* set dtype and layout in InferMeta

* refine code

* move bce_loss to phi

* refine PADDLE_ENFORCE

* revert PADDLE_ENFORCE

* fix ci

* Migrate poisson op into phi

* fix CI

* fix comment

* added nearest interp v2 bf16

* disabled bilinear interp nhwc test

* added skipping UT for gpu

* added NHWC support

* removed unnecessary statements

* minor change

* CI fix

* added appropriate changes to interpolate_v1

* fix after review

* minor change

* minor change

* revert unwanted deletions

* CI fix

* Optimize the where_op by the elementwise_op funtion

* Modified where_op & abs_grad_op by elementwise interface

* optimize block config  and fp16 atomicAdd perf for lookup_table_v2_grad.

* move trunc_op's infere shape

* modify according to risheng's comment

* move randperm to phi

* fix npu

* fix memory::Copy

* change CUDA implementaion of bernoulli OP

* fix CI

* move unbind to phi

* revert infer shape

* add header file

* move concat_and_split to phi

* [KP] Add elementwise add xpu, test=develop

* modify the File Permissions

* modify the copyright time

* modify code style

* modify code style

* [Phi] Migrate lable_smooth_op into Phi

* fix PT->PD

* add elementwise_div

* refine rocm

* refine code

* refine op register

* solve conflict

* refine unittest

* refine unittest precision

* add rocm

* fix RecordEvent interface

* modify default level to 4

* update interface use

* add const default trace level

* update record event interface using

* update record event interface using

* update record event interface using

* update operator.cc

* update part2

* update part1

* update part3

* fix include profiler.h header in ps server

* fix include profiler.h header in ps server

* fix profiler.h header

* fix profiler.h header

* fix merge buf

* update

* fix bug

* fix bug

* remove fill_any_like kernel in fluid and fix data transform bug

* support scalar in infershpe

* recover infershape in fill_and_like

* Move Real OP to phi

* Move Imag OP to phi

* Move Real and Imag InferShape to phi

* Move Real and Imag to complex_kernel

* Change PT_REGISTER_XXX to PD_REGISTER_XXX

* Adapt to batch_norm_grad op and add align function in
roi_align op for kunlun, *test=kunlun

* Adapt to batch_norm, batch_norm_grad op api for kunlun, and add unit-tests of batch_norm, roi_align. *test=kunlun

* change Vector to std::vector and provide MixVector class as a helper wrapper class

* solve the multi-gpu hang problem

* remove the duplicate template instantialize

* Copy vector to cpu

* add CopyToCPU

* xxx

* final version: fix the problem of all reduce

* remove mixvector dependence

* fix

* merge

* fix code

* fix by CI

* [Phi] Migrate unfold_op into phi

* fix im2col CPUContext template instantial

* fix unfold_op.h header include problem

* fix unittest

* fix PT->PD

* Modified RandomKernel with Kernel Primitive API

* update pten.h to phi.h

* update

* update fullKernel

* Move Abs InferShaper to phi

* Fix CI error

* migrate huber_loss into phi

* migrate infershape

* modify pten into phi

* fix cond grad error when handle tensor array

* add UT

* rm reduce_sum raw kernel

* remove reduce_mean kernel

* remove reduce_mean kernel

* reduce support int and int64_t

* mean support int and int64_t type

* add elementwise_max & unittest

* refine cuda register and unittest

* refine unittest

* refine uinttest for bf16

* refine optest

* refine code

* refine unittest

* refine unittest

* remove infershape and Xshape

* add xshape

* fix bugs when run ci

* fix bugs when run ci

* fix bugs when run infrt test

* pass converage

* fix. test=develop

* fix. test=develop

* fix code style. test=develop

* fix. test=develop

* fix. test=develop

* rename pten dir to phi

* rename namespace to phi

* rename infrt pten dir to phi

* resolve conflict

* rename pten to phi in cmake

* revert all infrt change

* change needed files

* fix infrt failed

* fix inference failed

add index initialization in the block loop for index_sample kernel when dealing with a input tensor whose shape is larger than block_dim * grid_dim (#39736)

* add block and grid loop for index_sample kernel to deal with a large-shape tensor

* fix code format

* limit grid dim

* fix the omissive initialization of index_i in the second cycle for index_sample kernel

* fix conflicts

* add more op int16 support

* fix xpu ci

* Unify paddle/pten::framework::ddim into pten::ddim

* fix paddle namespace

* compile sucessfully

* fix npu src file

* fix conflict

* fix conflict

* fix tensorrt compiler error

* fix conflict

* fix conflict

* fix tesst file conflict

* fix conflict

* fix mlu file conflict

* fix mlu file conflict

* fix cinn header file conflict

* fix conflict

* fix conflict

* fix conflict

* fix conflict