* Fix test_gast_with_compatibility.py due to the problem of gast in python3.8 (#27433)

test=develop

* fix dll load bug on windows from python3.8 (#27324)

* Support python3.8 (#26850)

* Support python3.8

test=notest

* Replace the 'spawn' start method with 'fork' start method for multiprocessing, on MacOS with python>=3.8 (#27317)

* Replace the 'spawn' start method with 'fork' start method for multiprocessing, on MacOs when python>=3.8

test=develop

* Correct the error in decorator.py (#27409)

test=develop
Co-authored-by: NZhou Wei <52485244+zhouwei25@users.noreply.github.com>

* [Paddle-TRT] Stack op plugin (#25605)

* add stack_op to CMakeLists

* add dim=3 support for scale op

* add trt stack op, test=develop

* remove debug message

* add stack plugin serialize

* remove slice, scale op, will add later

* enhence error message

* revise trt ernie test to conver the stack op CI testi, test=develop

* add stack op serialization

* fix test shape after adding stack op

* remove slice op, will add after implementing serialization

* roll back to min_graph=5 to avoid using slice op

* fix scale op output layer

* implement stack op createPlugin

* use workspace and move the defination to .cu

* move stack plugin creator definition to .cu, test=develop

* sync ut with develop
Co-authored-by: Nzlsh80826 <zlsh80826@gmail.com>

* fix multihead matmul shared params (#27121)

* fix multihead matmul shared params

test=develop

* add double grad for expand, test=develop

* add double grad to reduce sum

cherry-pick fix cvm check
test=develop
Co-authored-by: N123malin <malin10@baidu.com>

* fix eigen in push sparse; fix hadoop command
test=develop

* add log in load_combine_op
test=develop

This commit fixs the compiling bug regarding unique_ptr of IOptimizationProfile.

IOptimizationProfile has protected dtor and is controlled by TensorRT
internally. Application shouldn't delete the pointer of IOptimizationProfile.
See TensorRT document: https://docs.nvidia.com/deeplearning/sdk/tensorrt-api/c_api/classnvinfer1_1_1_i_builder.html#a9ac47e100454151d8206ac91d543299a
test=develop
Co-authored-by: NJeng Bai-Cheng <jeng1220@users.noreply.github.com>

* mod cvm test=develop

* mod code format test=develop

* add mock barrier all (#24786)

* add mock barrier all
test=develop

* fix
test=develop

* fix
test=develop

* fix
test=develop

* fix gloo error
test=develop
Co-authored-by: Nxujiaqi01 <173596896@qq.com>

* fix dataset py3 (#25012)

* fix dataset py3 error
* test=develop

* fix logger (#24682)

* fix logger of FetchHandler，which may print log twice
* test=develop

* add timeout and http store in communication (#23436)

* add timeout and http store in communication, add revert and confirm in fleet
* test=develop

* modify datanorm op test=develop (#23030)
Co-authored-by: Nxujiaqi01 <173596896@qq.com>
Co-authored-by: Nyaoxuefeng <yaoxuefeng@baidu.com>

* add macro check for using TRT api dynamicRangeIsSet() (#25694)

* adjust minimum trt version for hard_sigmoid converter to 5130. test=develop (#24746)

* fix bug
bug fix

Co-authored-by: NTao Luo <luotao02@baidu.com>

* fix cpuid.h not found

* fix-jetson-compile-pyramid_hash

* add more info to version.txt, test=develop (#24551)

Co-authored-by: NWilber <jiweibo@baidu.com>

Co-authored-by: NWilber <jiweibo@baidu.com>

* solve conflict

* fix crash when trt not found in python; update unittest model path

* simply C++ error stack once again, test=develop

* refactor code remove string pointer and recursive, test=develop

* fix multhead matmul's instable
test=develop

* fix multihead matmul bug
test=develop

* fix converage problem
test=develop
Co-authored-by: NZhaolong Xing <nhzlx.dragon@gmail.com>

* Fix dygraph grad bugs (#25781)

* fix double grad visitid unit; test=develop

* change name hash_pair to HashPair; test=develop

* follow comment; test=develop

* remove manual seed; test=develop

* change create_graph from True to False; test=develop

* Fix the double grad bug for the star gan. (#25655)

* update the retain_graph parameter doc. test=develop

* Add some error messages for the op without double grads.

* fix the test_imperative_double_grad UT.

* fix conflict

* fix conflict

* fix code

cherry pick encryption api
Co-authored-by: NYanghello <915769235@qq.com>
Co-authored-by: NYanghello <yangqingyou@baidu.com>

Fix the condition of concat dimension judgment.

* ignore warnings of external libraries, test=develop (#24193)

* fix repeat definitions in liengine.cc, test=develop (#25020)

* remove paddle_use_kernel and paddle_use_op. test=develop (#25189)

* fix compile for lite subgraph. test=develop (#25285)

* [CI] [Lite-Subgraph] CI add lite subgraph check. (#25346)

* supports xpu runtime, test=develop (#25554)

* fix cmake of lite, test=develop (#25680)

* change commit files, test=release/1.8
Co-authored-by: NWilber <jiweibo@baidu.com>

* fix softmax_with_cross_entropy cuda kernel overflow bug, test=develop

* replace old macro & for condition, test=develop

* polish details, test=develop

* Add default cudnn lib path (#25175)

* add default cudnn lib path, test=develop

* change default path in func, test=develop

* move to linux branch, test=develop

* fix var error in other plat, test=develop

* Refactor dynamic dso search functions (#25214)

* refactor dynamic dso search func, test=develop

* polish details, test=develop

* polish detail based review comments, test=develop

* revert string type change, test=develop

* Polish install error hint message (#25531)

* polish install error hint msg, test=develop

* fix variable error, test=develop

* polish hint messgae again