* enhance check for current block docstring for prim2orig interface

* refine if else syntax

* 1st commit

* fix usless change in header transpose_kernel_h file

* add sync

* Fix cond_block_grad error when handle no need grad vras

* Add comment and UT

* addmm supports 1-d input

* fix coverage

* fix

* more ut

* make data transform inplace when tensor is on gpupinned in new dygraph

* fix unittest

* fix alltoall

* rename utest

* support is empty

* fix error

* fix code error

* change to fake empty

* using fake empty first

* using fake empty first

* refactor the optional tensor

* remove optiona<MetaTensor> in InferMeta

* fix bug

* fix optional<vector<Tensor>>

* fix bug

* fix rmsprop

* fix amp of eager_gen

* polish code

* fix deleted code

* fix merge conflict

* polish code

* remove is_nullopt_

* fix merge conflict

* fix merge conflict

* [Dy2Stat]Replace paddle.jit.dy2stat with _jst

* [Dy2Stat]Replace paddle.jit.dy2stat with _jst

* refine code style

* refine code style

* refine trunc uinttest

* refine unittest

* refine ut

* refine fp64 grad check

* experimental nvcc-lazy-module-loading

* remove two empty last line from two files

* Support memory stats for CPU

* Add UTs

* Fix typos

* Fix typos

delete id 0 in gpups

* move instance_norm

* change mutable_data

* fix compile bugs

* added support for md in more ops

* fixed typo

PR types
Bug fixes

PR changes
Docs

Describe
修复 paddle.metric.accuracy 文档，对应的中文文档修复为 https://github.com/PaddlePaddle/docs/pull/4811
the file was editted based on the discussion in the issue:
INT32 Failed on paddle.metric.accuracy: https://github.com/PaddlePaddle/Paddle/issues/42845

* fix maybe-uninitialized warning

* fix compile

* fix xpu compile

* fix npu compile

* fix infer compile

* fix compile

* fix compile

* change logic for optimize

* modifty

* optimize the backward speed of EinsumOp

* add cache optimizer for einsum op

* EinsumOp: fix new dygraph mode error

* fix bug

* change Cache->InnerCache

* fix code

* fix

* add nan inf utils for einsum op

* add as_extra

* Compatible with v2.3 EinsumOp

* remove dispensable