* enable hard_swish_grad unit test

* remove unused argument

* update comp cost and completion for gpt auto search

* add unittest

* optimize Paddle-TRT performance

* fix some doc bug test=document_fix

* fix some docs issues, test=document_fix

* beta -> \beta in softplus

* threshold -> \varepsilon in softplus

* parameter name

* delta -> \delta in smooth_l1_loss

* fix some docs test=document_fix

* fix docs test=document_fix

* fix docs && 增加空行 test=document_fix

* Update python/paddle/nn/functional/activation.py, test=document_fix

* Update python/paddle/nn/layer/activation.py, test=document_fix
Co-authored-by: NSigureMo <sigure.qaq@gmail.com>

* add lookup_table op_convert, add lookup_table plugin

* added transpose

* CI fix

* fix for transpose

* fix after review

* - some more MD changes

* - lint

* - compilation fixes

* - compilation fixes

* - lint

* - fix

* Fix undefined reference PD_IntArrayGetElementCount

* Delete PD_IntArrayGetSize Unused

* paddle-inference support custom-ops
Co-authored-by: NZhixin Yao <zhixiny@graphcore.ai>

* fix tolower
Co-authored-by: NZhixin Yao <zhixiny@graphcore.ai>

* Optimize performance of depthwise_conv_bwd of filter

* op-benchmark

* fix

* op benchmark

* merge bwd

* Optimize performance of depthwise_conv_bwd

* fix

* migrate sigmoid with cross entropy, and tile xpu kernels to phi, test=kunlun

* migrate add_n kernep to phi, test=kunlun

* fix bugs of tipc, test=kunlun

* add ipu related authors, test=document_fix

* add gc, test=document_fix

* opt GetExpectedKernelType code of conv_transpose_op

* fix if error

* support pure bfloat16

* support bf16 linear

* update PR to pass CI

* tiny fix where_grad_kernel.cu

* add bfloat16 to selu_grad to pass CI

* fix selu grad compilation error