Merge pull request !2303 from gziyan/modify_lars_interface

Merge pull request !2458 from yao_yf/log_fix

Merge pull request !2491 from kisnwang/add-cpu-kernel-profiling

Merge pull request !2441 from chenzhongming/master

Merge pull request !2495 from chenfei_mindspore/check-depend-mode-of-control-depend

Merge pull request !2206 from jiangjinsheng/vm_LRN

Merge pull request !2430 from liangzelang/dev

Merge pull request !2140 from ShidaHe/debugger_dev

Merge pull request !2494 from jiangjinsheng/issue_fix4

Merge pull request !2475 from ougongchang/master

Merge pull request !2452 from ougongchang/fix_dataset_bug

Merge pull request !2468 from Giancarlo/optimizer_update

Merge pull request !2432 from liangzelang/dev1

Merge pull request !2457 from VectorSL/gpu-type-expand

Merge pull request !2180 from chenweifeng/gelu-fp16

Merge pull request !2482 from lilei/sparse_proximal_ada_grad

Merge pull request !2479 from dinghao/master

Merge pull request !2436 from jiangjinsheng/issue_fix4

Merge pull request !2434 from jjfeing/master

Merge pull request !2297 from jiangjinsheng/vm_matrixdiag

Merge pull request !2459 from wukesong/mkdify_alexnet

Merge pull request !2305 from 李鸿章/callback

Merge pull request !2466 from mindspore_ding/backend

Merge pull request !2465 from chentingting/gcn_rectification

Merge pull request !2451 from 王东旭/master

The summary operator will be optimized when it return the origin value
in constant folding scene. So I return a None value to avoid this.

Merge pull request !2474 from Chong/zc