Merge pull request !3651 from jiangzhiwen/dataset/change_num_samples

Merge pull request !3625 from hewei/optimize_tensor_data

Merge pull request !3644 from liyong126/fix_mindrecord_bug

Merge pull request !3638 from geekun/yjk_master

!3643 Throw exception if different communication ops which are divided to the same segement share the same input
Merge pull request !3643 from huanghui/communication-op-fusion

Merge pull request !3489 from lvchangquan/master

Merge pull request !3594 from wangqiuliang/fix-batchnorm-under-mix-precision-in-pynative

Merge pull request !3630 from laiyongqiang/refnode_input_fix

Merge pull request !3635 from panfengfeng/fix_dataset_train_gil_of_gpu_master

Merge pull request !3627 from guozhijian/fix_device_occupied_tdt_hung

Merge pull request !3624 from yanghaitao/yht_generator_timeout

Merge pull request !3574 from hewei/rename_user_data_func

Merge pull request !3637 from thlinh/dev_Jul28_lower_checking_threshold

Replace std::vector<T> with std::unique_ptr<T[]> for tensor data storage,
it prevent unintended data initialization when data is lazy allocated.

Merge pull request !3603 from jiangzhiwen/fix_column_names_exceeded

Merge pull request !3620 from 张学同/to_merge

Merge pull request !3270 from thlinh/dev_Jul17_removeSelect

Merge pull request !3611 from ms_yan/vgg_repair

Merge pull request !3556 from jinyaohui/master

Merge pull request !3612 from changzherui/mod_case

Merge pull request !3563 from zhouyuanshen/master

Merge pull request !3615 from XunDeng/pp_poc_v3

Merge pull request !3614 from Giancarlo/update_convert_sw

Merge pull request !3578 from meixiaowei/master

Merge pull request !3606 from vlne-v1/amp_doc

Merge pull request !3592 from xiefangqi/md_fix_numpyslice_issue

Merge pull request !3601 from JoyLvliang/pynative-add-attr-info-into-cache-key

Merge pull request !3617 from 章一智/cpp_build