Merge pull request !1209 from liubuyu/master

Merge pull request !1183 from candanzg/implicit_type_conversion

Merge pull request !1221 from jiangjinsheng/bn_training_update_v2

Merge pull request !1187 from yangzhenzhang/ckpt-and-restore-parameter-shape

Merge pull request !1219 from YuJianfeng/master

Merge pull request !1207 from jinyaohui/add_context

Merge pull request !1202 from zjun/fix_tensor_print

Merge pull request !1213 from Margaret_wangrui/create-new-parameter-from-parameter

Merge pull request !1204 from caifubi/support-hccl-multi-group

Merge pull request !1135 from kisnwang/add-group-for-allreduce-fusion

1.Support Broadcast op
2.Support communication op as graph output
3.Optimize Communication op memory alocation
4.support hccl multi-group

Merge pull request !1170 from yangjie159/fix_memreuse_to_support_large_batchsize

Merge pull request !1192 from h.farahat/string_Tensor

Merge pull request !1186 from wenchunjiang/construct_kernel_graph

Merge pull request !972 from seatea/fix-cse-bug-for-random-effect

Merge pull request !1129 from zhaozhenlong/op/bounding-box-encoder

Merge pull request !1203 from changzherui/code516

be optimized as it will generate different values each time.

Merge pull request !804 from huanghui/fix-confusionmulgrad-fusion-pass

Merge pull request !1172 from Chong/support_squeeze_and_reduce

Merge pull request !1199 from caifubi/fix-profiling-core-dump

Merge pull request !1100 from jinyaohui/context_opt_2

iou

NMSWithMask

larsupdate testcase

sgd testcase

Merge pull request !1184 from wangcong/master

Merge pull request !1138 from JoyLvliang/pynative-fix-topk-run-failed

kernel_graph from root func_graph

Merge pull request !1178 from zhouneng/add_vm_support_roialign

-replace switch'case by indexing

- Add test case
- Add constructors
- Add getItem string

- Fix bugs
- Add more tests

- Tensor iterator
- asNumpy
- TextFileDataset

- Tensor(Numpy)

- Super > 2D
- Add more test cases for GeneratorDataset

- Change StartAddr to GetBuffer and GetMutableNuffer

- Raise an error if batch is used with strings

Clean-up work

Merge pull request !1162 from lianliguang/using-device-dtype-to-create-transdata-kernel-build-info

Merge pull request !1120 from Kang/master

Merge pull request !1145 from xychow/fix-env-getitem-poly

Merge pull request !1118 from huanghui/batchnormgrad-to-bninfergrad-pass

Merge pull request !1181 from yao_yf/fix_gather_v2_replace_graph