Merge pull request !700 from penn/validate_bprop_rules

Merge pull request !603 from liyong126/update_pk_sampler

Merge pull request !747 from kisnwang/change-cpu-kernel-dir

Merge pull request !671 from EricZ/master

Merge pull request !466 from h.farahat/deepcopy

Merge pull request !711 from ZiruiWu/mindspore_master_only

Merge pull request !718 from zhouyuanshen/master

Merge pull request !663 from flywind/fix_bug

Merge pull request !736 from yanghaitao/yht_tftextfile_black_line

Merge pull request !698 from Xiaoda/support-wide-deep-in-auto-parallel

Merge pull request !657 from huanghui/fix-confusionmulgrad-fusion-pass

Merge pull request !687 from candanzg/summary_tag_check

Merge pull request !474 from wsc/lossscale_script

fix ut

Merge pull request !695 from YuJianfeng/master

Merge pull request !682 from liuxiao/fix-bug

Merge pull request !681 from zhaozhenlong/psnr-check-same-shape

Merge pull request !430 from Etone.Chan/bufferfusion

Merge pull request !344 from fary86/add_prim_name_to_error_message_for_array_ops

Merge pull request !679 from huanghui/move-pass-to-right-directory

Signed-off-by: candanzg <zhangshucheng@huawei.com>

Merge pull request !676 from Xiaoda/add-the-resnet50-testcase

Merge pull request !662 from zhangbuxue/fix-reviewboot

Merge pull request !675 from vlne-v1/revert-allreduce-addn-opt

This reverts commit ea6958c50a.

Added new testcase for multi iterator

Addressing review

Fixed typo

Merge pull request !595 from candanzg/tensor_assign_with_integer

Merge pull request !645 from yao_yf/auto_parallel_prelu_support_broadcast