Merge pull request !732 from zhangbuxue/dock_AcoshGrad_AvgPool_AvgPoolGrad_for_vm

Merge pull request !728 from yao_yf/strategy_checkpoint_extend

Merge pull request !791 from 梅晓蔚/master

Merge pull request !751 from zjun/remove_enable_hccl

Merge pull request !746 from lirongzhen1/bp_reducescatter

Merge pull request !694 from rick_sanchez/master

Merge pull request !700 from penn/validate_bprop_rules

Merge pull request !603 from liyong126/update_pk_sampler

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

Merge pull request !687 from candanzg/summary_tag_check

fix ut

Merge pull request !682 from liuxiao/fix-bug

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

Merge pull request !344 from fary86/add_prim_name_to_error_message_for_array_ops

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

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

Added new testcase for multi iterator

Addressing review

Fixed typo

Merge pull request !56 from changzherui/syn-code423

Merge pull request !595 from candanzg/tensor_assign_with_integer

Merge pull request !645 from yao_yf/auto_parallel_prelu_support_broadcast

Merge pull request !643 from lichen/support_reshape_parameter

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

Merge pull request !628 from zhangbuxue/fix_example_for_TruncatedNormal

Merge pull request !586 from lirongzhen1/allreduce_fusion