* Init complex number neural network, test=release/2.0

* Improve doc writing

* Fix elementwise add & sub

* Fix elementwise mul act

* a) add ut for complex variable; b) remove arg act in elementwise_ops

* Add trainable_statistics in attr for batch_norm
* Unifying behavior of dynamic graph and static graph

* add nll_loss op test=develop

* Indent MSELoss example docs

* Point out input tensors should be of same shape

test=develop

* Document `MSELoss` input and return parameters

test=release/2.0-beta,test=document_fix

* cherry-pick: fix converage ci (#23738)

test=release/2.0-beta

* modity ut
test=release/2.0-beta

test=release/2.0-beta, cherry-pick PR #23809: add 'seed' arguemnt of randint API

* change compare op fore_cpu true to false; test=develop

* pick fix warpctc bug in dygrpah mode; test=develop

* QAT: support range-based quantization and scales from attribute

* added support for channelwise

test=release/2.0

test=release/2.0
Co-authored-by: NJacek Czaja <jacek.czaja@intel.com>

[Cherry-Pick] [2.0-beta] error enhancement of Print, fused_embedding_fc_lstm and fusion_gru (#24097)

* fix tribilinear unitest, test=release/2.0

* add random seed,test=release/2.0

[cherry-pick] Variable, fusion_seqexpand_concat_fc, fusion_seqconv_eltadd_relu error message enhancement, test=develop (#24066)

* Chery_pick:[Eernie TRT]: add slice op and add emb eltwise layernorm fp16 support (#23723)

* refine ernie trt dynamic shape support
1. add slice op converter
2. add emb eltwise layernorm fp16 support
test=develop

* fix dynamic shape test ut
test=develop

* fix comments.
test=develop

* fix comments
test=develop

* cherry-pick [BUG]: Head number can only be > 1 on multihead op (#23974)

* support the head number == 1
test=develop

* fix slice op error.
test=develop

* cherry-pick :disable trt test, test=develop (#23984)

test=release/2.0-beta

* cherry-pick of DeviceContext Split, test=develop (#23737)

* New feature: thread local allocator, test=develop (#23989)

* add the thread_local_allocator, test=develop

* refactor the thread_local_allocator, test=develop

* provides option setting strategy, test=develop

* add boost dependency to cuda_stream, test=develop

* declare the stream::Priority as enum class, test=develop

* deal with PADDLE_ENFORCE_CUDA_SUCCESS macro in pr #23816

* add diag_embed op (#23385)

* add diag_embed op, test=release/2.0-beta

* solved a conflict, test=release/2.0-beta

* lod_rank_table error message enhance. test=develop

* Add `nn.interpolate ` (#23434)

* add bmm and arange op test=develop

* add bmm and arange op test=develop

* update bce docs,test=release/2.0

* update docs, test=release/2.0

* cherry-pick OP Normal, Uniform, Xavier Initializer, smooth_l1, mean_iou error message enhancement (#23751)  test=release/2.0

* cherry-pick,Optimize the error messages of paddle CUDA API

* fix the error messages of paddle CUDA API

* Refactoring PADDLE_ENFORCE_CUDA_SUCCESS, and apply to curand/cudnn/cublas/NCCL

* remove build_ex_string

chery-pick from the pr#23978

* change compare op fore_cpu true to false; test=develop

* unitize name in optimizer; test=develop

* remove force_cpu; test=develop

* enhance pad.* error message, test=develop

* error message enhancement create_parameter create_global_var, test=develop

* use six.PY2 to use long, test=develop

* fix input dtype for create_parameter, test=develop