* update to popart v2.5.0

* use a specific version of sdk2.5.0

* support diff batch for sparse of eagerreducer

* fix

* swish refactor

* bug fix

* trt7 non-linear bug fix

* improve introduction of bfgs args; test=document_fix

* modify according to zhouwei's comment; test=document_fix

* change logic for optimize

* modifty

* [Auto Parallel] Refactor the engine api and parallelizer

* [Auto Parallel] Fix the default dist op for the slice op

* [Auto Parallel] Fix the format of planer.py

* [Auto Parallel] Fix a bug

* Readd conv_affine_channel fuse pass as mkldnn pass

* Fix formatting

* Add new test to parallel_UT_rule.py

* Fix Coverage and Windows CI issues

* Revert "Fix Coverage and Windows CI issues"

This reverts commit f33459846385c9fd51c07f9f44e7ff283a652637.

* Fix CI errors

* Remove unnecessary conv_eltwise_add_affine_channel fuse pass

* Remove test from parallel_UT_rule.py

* [Eager] fix sharding under eager mode

* [Eager] fix several sharding test under eager mode

* Recover using _test_eager_guard

* Ensured fleet.init under legacy

* Ensured fleet.init under legacy

* Fix CI issue, re-definition strategy and call fleet.init() in stage2_offload

* Modified dygraph_group_sharded_api.py, move fleet.init to a better line

* back fl

* delete ssl cert

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* make warning

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* unittest paral degree

* solve unittest

* heter & multi cloud commm ready

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* arm_brpc compile

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* only output is ok

* base is ok

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* add switch server bin

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* adapt brpc ssl

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* fix heter_server & heter_client

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* int->int64_t

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* safe map in multithread

* fix heter unitest

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* fix code_style

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* fix bug

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* - shape mkldnn adapted to NHWC

- NHWC shape mkldnn ut

- fixes to UT

- Fix to UT

- Fixes to UT

- Fix of compilation

* - lint candidate fix

* added fill_constant kernel

* CI fix

* ci fix

* switched from nan to zero memory

* CI FIX

* ci fixes

* CI rerun

* ci fix

* minor change

* CI rerun

* Create elementwise_heaviside_op.cc

* add ElementwiseHeavisideFunctor

* Create test_elementwise_heaviside_op.py

* 增加heaviside的python接口

* add heaviside in white list

* 增加heaviside的签名

* 增加heaviside的核函数

* 增加heaviside梯度的核函数

* 增加heaviside梯度的注册

* 调整代码格式

* Update elementwise_sig.cc

* add heaviside in __all__

* Update heaviside docs

* Update math.py

* Update math.py

* Update math.py

* print mem

* refine

* refine

* refine

* refine

* fix adamw unittest

* tiny fix

* fix param name

* pdnode_compare

* panode compare

* pdnode_compare

Co-authored-by: Nyaozhixin <522190855@qq.com>

* [Eager]Fix tensor.name is empty behavior

* fix unittest

* refine pylayer

* refine

* auto_cast; test=document_fix

* static.save; test=document_fix

* cuda_places; test=document_fix

* Add AdamW jit kernel

* Second implementation

* Add missing header

* Correct number of jit kernels in the test

* - fix to crash

- more fixes

- added diagnostic

- matmul output fixes.

- compilation fix

- stop rotating too small shapes

* - Added enabling of matmul_V2 onednn test

* add abs double grad yaml and test case

* add pool2d double grad yaml

* add pool2d dygraph double grad test case

* polish grad details

* polish detail by comment