Merge pull request !1497 from chengxb7532/master

Merge pull request !1511 from Chong/ReID

Merge pull request !1407 from zhangbuxue/support_mixed_tensor_for_tensor_get_item_and_tensor_set_item

Merge pull request !1416 from Margaret_wangrui/fix-summary-nodes-in-child-graph

Merge pull request !1489 from VectorSL/gpu-fix-slice

Merge pull request !1446 from liuxiao78/master

Merge pull request !1383 from amongo/KeepPrimAttrInCNode

Merge pull request !1472 from yihuaijie/master

for debug

for DEBUG

for DEBUG

for DEBUG

for DEBUG

for well performance

for pylint

for te chip

for pylint

for pylint nth

Merge pull request !1477 from jiangjinsheng/BatchToSpaceND

Merge pull request !1271 from yangjie159/refactor_memreuse_allocator

Merge pull request !1480 from panfengfeng/iterator_gpu_weak_ref

Merge pull request !1457 from Peilin/splitOp-after-testing

Merge pull request !1443 from yangzhenzhang/add-sigmoid-op

Merge pull request !1490 from seatea/fix-pylint-warning

add another test case

typo

merge conflict

another PR changed testing behavior, updated test cases in this commit

added input check for use_sampler

addressed code review comments

fixed pylint, not related to my changes

updated UA parameter check, fixed PyLint errors.

fixed UA parameter validator bug

Updated UA C++ description

Changed py and cpp UA decorator names

Merge pull request !1466 from zhouneng/add_vm_support_Atan2_ExtractImagePatches

Merge pull request !1487 from sunsuodong/addn

resolve review

Merge pull request !1484 from SanjayChan/mobilenet

Merge pull request !1483 from zhoufeng/code-clean

Merge pull request !1353 from yanzhenxiang2020/add_topk_datatype

Merge pull request !1474 from YuJianfeng/master

Merge pull request !1479 from liubuyu/master

Merge pull request !1452 from caojian05/ms_master_dev

remove stream id from membuf
add kernel dependence to determine whether is usable