Merge pull request !2214 from liuwenhao/master

Merge pull request !2201 from chenweifeng/gpu_bert

Merge pull request !2208 from sunsuodong/review

Merge pull request !2152 from 李鸿章/fix_issues

Merge pull request !1276 from 李鸿章/context_manager

Merge pull request !2213 from xianwz/static-check-fix

Merge pull request !2154 from caifubi/fix-profiling-core-dump

Merge pull request !2159 from yao_yf/add_virtualdataset_in_eval

Merge pull request !2144 from caojian05/ms_master_dev

Merge pull request !2167 from ougongchang/adjust_callback

Merge pull request !2190 from wangnan39/modify_annotations_of_sparse_adam

Merge pull request !2181 from chenzhongming/quant_utils

Merge pull request !2184 from xiefangqi/xfq_fix_coco_issue

Merge pull request !2155 from Kang/optimization

Merge pull request !2024 from Kang/master

Merge pull request !1923 from wenkai/wk1_cpu_summary_opt_0609

Merge pull request !1977 from JonathanY/randomwalk

Merge pull request !2188 from JesseKLee/deadcode

Merge pull request !2162 from h.farahat/slice_op

Merge pull request !2187 from ZiruiWu/vocab_rework

fix review comments

Merge pull request !2062 from liyong126/minddataset_split

Merge pull request !1899 from zhaoting/ResNet50_st

Merge pull request !2168 from chenzhongming/combined

Merge pull request !2178 from Margaret_wangrui/ascend_summary_nodes

Merge pull request !2097 from chenzhongming/master

Merge pull request !2174 from kisnwang/fix-cpu-reshape-bug

Merge pull request !2173 from limingqi107/gpu_memreuse_support_summary_node

Merge pull request !2119 from zhangdengcheng/master

Merge pull request !2153 from JoyLvliang/pynative-insert-transdata-for-hook-mode

Merge pull request !2171 from zhaozhenlong/fix-issues-quant-not-exposed-ssim-ksize-check

Merge pull request !2175 from zhaozhenlong/fix-issues-ascend-quant-move-to-inner-ops

Merge pull request !2165 from liuxiao/central_crop