* add variable_length_memory_efficient_attention
* update variable_length_memory_efficient_attention unittest
* update variable_length_mem_eff_attn's docs and unittest
* update variable_length_mem_eff_attn's docs
* Update test_variable_length_memory_efficient_attention.py
* Update variable_length_memory_efficient_attention.cu
* fix codestyle
* fix variable_length_fmha's docs and unittest
* fix variable_length_fmha's docs

* decompose tanh_triple_grad and add it into prim_white_list test=develop

* fix TanhTripleGradKernel bugs test=develop

* decompose tanh_triple_grad test=develop

* [XPU kernel] fix warpctc issue

* fix issue

* temporal hack to circumvent depthwise_conv2d precision issue

* reset test case

* fix_softmax_eigen

* fix_ctest_seresnet

* fix_ci_error

* onednn: rename macro to PADDLE_WITH_DNNL

* onednn: rename macro to CINN_WITH_DNNL

* [XPU] add pos_weight for sigmoid_cross_entropy_with_logits.

* update xdnn version.

* move decayed_adagrad_op to phi

* fix bug

* add mask

* add backword

* add enforce info

* update scale

* integrate code

* update enforce

* add enforce eq

* add error type

* update enforce

* add test_flash_attention

* Polish codes and fix compiling errors.

* Set num_splits to 0 for flash-attn with tensor mask.

* Fix the compiling error for non flash-attn case.

---------
Co-authored-by: NLiu Yiqun <liuyiqun01@baidu.com>

* make tcp store a global instance

* fix windows compile error

* Work for fa-2 padded fwd. Code to be cleaned.

* Work for fa2 unpadded fwd.

* Work for padded-bwd, dk get small diff on np.random.seed(0)

* Anyway I pass paddle's utest, except return softmax without dropout.

* Clean code.

* Modify interface.

* Clean code and add some check.

* Easy compile for dev.

* Fix ci.

* Fix ci-build.

* Add std c++17 option again.

* Limit max job when compiling fa2.

* Remove const_cast

* Add fwd params, to be cleaned.

* Clean code.

* Add bwd params.

* Clean code.

* Add enforce.

* Use v2.0.4

* Pass RNG state to fa2 capi

* Fix review.

* Add assert

* Skip compile for sm less than 80.

* fix bug: feed_with_place should consider variable existence

* fix

* fix build scope

* change method to set feed var name

* remove feed_with_place to placeholder

* fix

* rename to data

* fix

* fix

* refacot aot

* update

* fix bugs

* remove some test

* fix bug

* fix bug

* fix bug

* fix bug

* update

* [clang-tidy] enable modernize-use-emplace

* Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into modernize_use_emplace