Merge pull request !858 from xiefangqi/md_fix_gpu_issue

Merge pull request !844 from chujinjin/add_accuracy_for_resnet_cifar

Merge pull request !829 from ghzl/parser-parameter-in-tuple-in-run_op

Merge pull request !852 from lianliguang/master

Merge pull request !839 from wangnan39/add_parameter_verification_for_rmsprop

Merge pull request !833 from wandongdong/master

Merge pull request !841 from zhangbuxue/adapt_ExtractImagePatches_and_fix_EluGrad

Merge pull request !823 from huanghui/BatchNormGrad-split-pass

Merge pull request !845 from fary86/add_error_type_index_error

!848 sampler and num_shards is not supported if source does not have attribute '__getitem__ in GeneratorDataset
Merge pull request !848 from yanghaitao/yht_generator_sampler_numshards

Merge pull request !721 from candanzg/tensor_assgin_ellipsis

Merge pull request !727 from Chong/cost

Merge pull request !846 from 梅晓蔚/master

Merge pull request !814 from xychow/compare-with-context-ptr

Merge pull request !802 from chenfei_mindspore/move-opt-into-build-graph

Merge pull request !749 from wenkai/wkmaster

Merge pull request !730 from yuanhan/master

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

Merge pull request !767 from vlne-v1/I1F48Y-with-eval-cell-show-cast-is-not-support-in-gpu-pynative

Merge pull request !816 from flywind/combine_opt

Merge pull request !795 from jinyaohui/clean_pylint_0428

Merge pull request !831 from JesseKLee/check_rc

Merge pull request !563 from zhaoting/add-YOLOv3-infer-scipt-and-change-dataset-to-MindRecord