Merge pull request !5985 from gziyan/fix_parallel_optimizer

Merge pull request !5933 from ZPaC/master-fix-error-when-pserver-finish-training

Merge pull request !5885 from vlne-v1/add-doc-for-composite-op

Merge pull request !5692 from BowenK/pre_ad

2.Optimize worker and server log.
3.Try Catch ps-lite exceptions.

Merge pull request !5812 from ZPaC/master-context-for-ps

Merge pull request !5879 from riemann_penn/fix_pclint

Merge pull request !5714 from vlne-v1/change-top-graph

Merge pull request !5773 from lichen/fix_reduce_eliminate_pass

Merge pull request !5741 from wangqiuliang/fix-net-id-issue

Merge pull request !5781 from kisnwang/async-run-graph

Merge pull request !5729 from lichen/add_batchnormex_op

Merge pull request !5722 from yao_yf/semi_auto_parallel_reshape_parameter_has_another_user

Merge pull request !5640 from ZPaC/master-clean-codex

Merge pull request !5663 from zhangbuxue/add_check_for_mod_for_y

Merge pull request !5645 from vlne-v1/ref_demo

Merge pull request !5661 from yao_yf/auto_parallel_reshape_fix

Merge pull request !5516 from yao_yf/auto_parallel_context_collation

add support for pynative pass

add testcases

Merge pull request !5582 from yangzhenzhang/update-check-strategy-value

Merge pull request !5586 from BowenK/performance

Merge pull request !5590 from ZPaC/master-fix-server-shard-method

Merge pull request !5488 from zhangbuxue/add_check_tensor_before_compile_graph

Merge pull request !5352 from fary86/refactor_context_interface