* test=develop, add distributed_infer

* skip quantizing ops in cpu inference, test=develop

* added support for inference using qunatization aware trained dygraph

* added support for inference using qunatization aware trained dygraph
correct boost get usage

* Delete incorrect warning message (#30196)

* fix warning and no grad

* clean redundant API alias in 2.0 - part 2 (#30013)

* delete paddle.nn.functional.assign

* fix dynamic to static error

* just add the op error message for the matmul xpu (#30246)

 add the op error message for the matmul xpu

* Add Static Variable Clone (#30208)

Add clone method for static Variable so that this interface will be same as dygraph. It fixed some bugs in dy2stat

* use wget to replace curl to download the lcov file (#30229)

* use wget to replace curl to download the lcov file

* add cache for lcov

* fix test_pool3d_op timeout issue (#30248)

* Fix unittests bugs. (#30250)

* modify error message based on comments (#30189)

* modify error message based on comments

* edit code according to review.

* Correct spelling according to review.

* Fix bug for 'save mutiple method' (#30218)

* Fix bug for 'save mutiple method'

* To pass coverage.

* edit code to pass coverage.

* edit code to pass coverage.

* add unittest for coverage.

* change for coverage.

* edit for coverage.

* added support for inference using qunatization aware trained dygraph

* Alias from  paddle.fluid.layers.auc to paddle.static.auc (#30206)

* add alias from  fluid.layers.auc to static.auc

* Update __init__.py

* added support for inference using qunatization aware trained dygraph
correct boost get usage

* corrected boost get usage

* corrected naming issues and enforcing zero check

* correct paddle enforce message

* added more error checkings

* corrected error report message and optimized code

* corrected findvar usage

* corrected paddle_enforce in scope

* correct error messages

* correct error reporting format
Co-authored-by: NLielinJiang <50691816+LielinJiang@users.noreply.github.com>
Co-authored-by: NXiaoguangHu <46782768+XiaoguangHu01@users.noreply.github.com>
Co-authored-by: Nwawltor <fangzeyang0904@hotmail.com>
Co-authored-by: NHuihuang Zheng <zhhsplendid@gmail.com>
Co-authored-by: NYUNSHEN XIE <1084314248@qq.com>
Co-authored-by: NBai Yifan <me@ethanbai.com>
Co-authored-by: Ngongweibao <weibao.gong@gmail.com>
Co-authored-by: NWeiXin <weixin10@baidu.com>
Co-authored-by: NJiaqi Liu <liujiaqi06@baidu.com>

* softmax backward optimize

* fix bug on compiling inference shared lib with crypto;test=develop

* fix cmake bug when build inference lib using -DWITH_CRYPTO=OFF

* update cmake

* remove unnecessary enforce message

usleep function in <unistd.h> only takes argument less than 1,000,000. Current call can exceed this limit, we have to fix it. This PR can fix random CI error.

Set expected place in child thread for dataloader to avoid costing cuda memory on other card (#30338)

* set expected place in child thread for dataloader

* set device id when set tensor from numpy

* revert tensor_py change

* add compile guard

* fix ci

* fix bug

* optimize memcpy perf for kunlun

* remove useless unitest for kunlun mean

* minor

* add sparse embedding & load vars for 2.0

Change-Id: I36b59ed5f015189dc9d9d2e34a9357722d369f1b

* fix hdfs gloo

Change-Id: Ia84d579053720ad804183e54c9a04b4f031c79c6

* fix gloo hdfs

Change-Id: I5ab982fd483cddc10adcdef0b8aa83aca976cb9e

* move loadvar/sparse embedding from incubute to static

Change-Id: I57081d3545ad2efab78c72420d2162c0eacaf3a0

* rename sendrecv.proto to namespace paddle.distributed

* split ps with distributed

* add save tensor support
Co-authored-by: NseiriosPlus <tangwei12@baidu.com>

* fix elugradgrad test fail and error message opt

* fix unitest,test=develop

* Update prroi_pool_op.h

fix error message

* opt message,test=develop

* fix ci fail,test=develop

* Fix the accuracy problem of allclose op when using float64 data type in static mode.

* Format the code style.

* fix cmake
Co-authored-by: NseiriosPlus <tangwei12@baidu.com>

Support vector<double> as type of op attribute and op set_value suppport vector<double> as value (#30126)

* type promotion for grad

* add type promotion for div op

* modify error message based on comments

* edit code according to review.

* Correct spelling according to review.

 add the op error message for the matmul xpu 

* optimize softmax forward

reduce the  occupied size  of memory for the fused pattern of elementwise_add Op and activation Op(relu Op for example) (#29885)

* add view strategy on squeeze,unsqueeze,reshape,flatten

* add squeeze unittest

* add unittests

* use View strategy as name rather than Reuse Allacation

* fix view api doc

* fix format

* use core.ops when input of reshape2 is Tensor

* fix test_cross_entropy_loss error because of reshape2

* delete selected_rows

* change op_function

* little change

* solve HandleViewBetweenInputAndOutput

* - Added UT for testing elementwise_mul caching

* lint fixes

* add cast ops before and after unsupported fp16 ops.

* Keep partial net in FP32 pattern.

* Support check_finite_and_unscale and update_loss_scaling for FP16 calculation mode.

* Add fp16 support for adam op.

* add multi precision attr for adam.

* Fix the bug of test_multi_precision_fp16_train UT.

* Code format for CI.

* Fix the redefine error about MPTypeTrait on windows.

* fix bugs of the _create_accumulators func in Momentum.

* fix bug when inserting post cast op.

* Add the update_loss_scaling op in allow_set of UnusedVarCheck.

* Update for ci coverage.

* Add some doc for OptimizerWithMixedPrecision.

* Fix the code style.

* Imporve the doc of `amp_init`.

* Change for fp16 testing if users have the infer program defined in separate way.