* add tensor doc

[xdoctest][task 142] Reformat example code with google style in quantization/quant_int8_mkldnn_pass.py (#56239)

* [xdoctest][task 142] test=docs_preview

* Update python/paddle/static/quantization/quant_int8_mkldnn_pass.py

* Update python/paddle/static/quantization/quant_int8_mkldnn_pass.py

---------
Co-authored-by: NNyakku Shigure <sigure.qaq@gmail.com>

* [dtype] add fp16 support for dist_kernel

* fix typo

* fix CE

* fix CE

* fix CE

* fix CE

* fix CE

* refactor

* fix CE

* fix CE

* fix varname

* add bf16

* add ut for bf16

* fix CE

* Improve GC for pipeline parallel

* Delete print

* fix bug of nop_op and sharding

---------
Co-authored-by: Nchenruibiao <chenruibiao@baidu.com>

* support new ir load combine

* update

* polish code

* remove print

* polish code

* fix bug

* polish code

* fix compile bug

[clang-tidy] Open clang-analyzer-unix.Vfork、clang-analyzer-security.insecureAPI.vfork Check (#56253)

* [Fluid] Migrate number_count to PHI

* fix out alloc

* fix ut (add python_api)

* fix sample codes

* fix bug

* Update tess.py

* Update dlpack.py

* Apply suggestions from code review

* Apply suggestions from code review

* fix sharding_pass stage3 precision problem

* delete 'stage3 has precision problem' comment

* add dp2 training after load dp_engine

* unset grad_clip=clip for opt

* add submodule openblas

* add submodule openblas

* refine code

* refine code

* refine code

* add reference of lbfgs

* add reference of lbfgs

* [CustomOP] InferDtypeFn supports attrs

* Update paddle/fluid/framework/custom_operator.cc

* update cmake list

* fix cpu device

* change unittest time

* fix proxy problem

* fix leveldb bug

* fix proxy problem

* input.py

* Update python/paddle/nn/functional/input.py

* Update input.py

* Update all_gather.py

* Update all_gather.py

[xdoctest][task 123] Reformat example code with google style in python/paddle/quantization/quanters/abs_max.py (#56234)