* Fix default label dim of label_smooth_op. test=develop (#21862)

* Fix unit tests of label_smooth_op's data size.

* Optimize the kernel implementation of layernorm with openmp (#20895)

* Add ernie c++ inference test (#21015)

* Add ernie unit test
test=develop

* Add ernie unit test
test=develop

* Add ernie unit test
test=develop

* remove ngraph

* optimize gpu test
test=develop

* optimize codes
test=develop

* fix cmake fails on inference_download_and_uncompress (#21185)

* solve cmake fails on inference_download_and_uncompress
test=develop

* solve cmake fails on inference_download_and_uncompress
test=develop

* Add fc padding to improve mkl GEMM's performance when N and K are multiple of 128. (#20972)

* Add fc padding to solve mkl performance
test=develop

* fix gpu pass and error information
test=develop

* fix fc_fuse_pass_test
test=develop

* fix error information
test=develop

* fix error information
test=develop

* fix name and add fc op padding test
test=develop

* fix attributes
test=develop

* optimize fc padding
test=develop

* fix test
test=develop

* Polish the codes of fc when needs padding (#21378)

test=develop

* Add ernie large c++ inference test (#21365)

* add ernie-large test
test=develop

* add ernie large c++ inference test
test=develop

* Modify padding strategy: remove weight copy in fc padding (#21650)

test=develop

* optimize fc jit (#21878)

test=develop
Co-authored-by: NYihua Xu <yihuaxu@hotmail.com>

windows conv_fusion failed as no kernel， explicit declare lambda
Signed-off-by: Nzhaoyuchen <zhaoyuchen01@baidu.com>

[Cherry-pick 1.6] fix batch_norm_grad shape=0 & allreduce shape enforce & sync_batch_norm hang in fleet (#22157)

* Fix softmax cuda bug

* Refine multihead log and softmax logic

* Align block to 32

* add param & grad shape check for sgd op

* add _reshape_inplece interface for dygraph parallel

* refine unittest based paddle/models scripts, test=develop

* add unittest for parallel grad fuse, test=develop

* fix decay param in DecayAdagrad test=develop (#22026)

* fix integer overflow in match_matrix (#22036)

* fix integer overflow in match_matrix test=develop

* fix integer overflow in match_matrix test=develop

* fix typo test=develop

* fix the computation for dx (grad for x) for prelu operation. (#20949)

* set the default value of alpha for prelu to 0.25, test=develop

* add the call to __syncthreads(), test=develop

* fix the implementation of cpu prelu, test=develop

* repair the implementation of element mode prelu, test=develop

* modify test_prelu_op.py, test=develop

* set dim[0] to -1 if dim[0] < 0 and remove assertion to runtime, test=develop

* fix transpose conv,test=develop

* fix comments
test=develop

* Improve argsort performance.

- Give 200000 data to compute argsort on v100,
can speed up ~190x
before opt cost: 0.53s
after opt cost:0.0027s

- Add fp16 support

* Refine error message
* Refine code
* Add descending sort

test=develop
Signed-off-by: Nzhaoyuchen <zhaoyuchen01@baidu.com>

* add Adam beta1/beta2 support Variable. test=develop

* Add Asypadding for conv fusion.

test=develop

reference: pr/20042

* Fix eigen build link error

* Change back file mode

* Use math function & add more checks.

* add the framework support for distfc and ut, test=develop
* fix the implementation of shard_index_op, test=develop

* batch_norm momentum support variable. test=develop

* Improve topk performance.

give 200000 data to compute topk,
before opt: cost 1s
after opt: cost 0.0028s.

* Refine return value.
* Add cuda util funtions.
* Fix ComputeBlockSize bug & refine comments.
Signed-off-by: Nzhaoyuchen <zhaoyuchen01@baidu.com>

The op should handle k=1024
Fix seq_len < warpsize error.

test=develop
Signed-off-by: Nzhaoyuchen <zhaoyuchen01@baidu.com>

seems shuffle_sync cannot handle small size

test=develop
Signed-off-by: Nzhaoyuchen <zhaoyuchen01@baidu.com>

* Fix the crash issue when scale or bias was null-pointer.

* Add the error message for passing CI.

test=release/1.6

* Fix gradients (#20857)

* fix_gradients

* fix_gradients, test=develop

* fix instance norm (#21042)

* fix instance norm

* update unitest,test=develop

* fix_bn

* revert unittest,test=develop

* [cherry-pick] All elements in attr(shape) of crop_tensor can be -1 and int32/64 kernel registered (#20756)

* All elements in attr(shape) of crop_tensor can be -1, test=develop, test=document_preview

* fix the bug that attr(offsets) should be initialized, test=develop

* [cherry-pick] maxout supports channel_last input (#20846)

* maxout support channel_last input, test=develop

* modified details of Input(X) and Attr(groups, axis) in doc, test=develop

* [cherry-pick] lrn supports channel_last input, test=develop (#20954)

* add pre condition check for fuse optimizer op pass, test=develop

* add log & set init to zero, test=develop

* fix test_fuse_all_reduce_pass failed, test=develop

* polish details, test=develop

* refine PADDLE_ENFORCE & remove needless VLOG, test=develop

* refactor op check method, test=develop

test=develop

* fix elementwise_mod FP kernel. test=develop

* fix unittest. test=develop

* delete paddle infershape enforce marco (#20832)

* Polish and arrange code in enforce.h (#20901)

* Enrich the type of error and declare the error type interfaces (#21024)

* Enrich the type of error and declare the error type interfaces, test=develop

* adjust tests to adapt new form, test=develop

* add inference deps with error_codes.pb.h, test=develop

* restore stack iter start pos, test=develop

* polish code based review comments, test=develop

* Add dependency for error_codes.proto (#21084)

* fix activation_functions deps, test=develop, test=document_fix

* add error_codes_proto deps, test=develop, test=document_fix

* try delete enforce.h, test=develop, test=document_fix

* change cuda enforce & add example (#21142)
test=release/1.6

[cherry-pick]fix bug in pool/conv/conv_transpose: UpdatePaddingAndDilation, _get_padding_with_SAME and conv2dtranspose_forward_naive. (#20997) (#21225)

* fix bug in pool/conv/conv_transpose:
    1. It should be stride[i] not stride[0] in UpdatePaddingAndDilation;
    2. fix bug of func  _get_padding_with_SAME in test_conv/conv_transpose_op.py;
    3. fix bug of the computation process in function conv2dtranspose_forward_naive.
    test=release/1.6

* Add asymetric padding support for mkldnn pooling
test=develop

* Add asymetric padding support for mkldnn conv
test=develop

* Add asymetric padding support for mkldnn conv_transpose
test=develop