Merge pull request !3092 from VectorSL/momentum

Merge pull request !3099 from looop5/update_akg

Merge pull request !3083 from zhaoting/master

Merge pull request !3112 from caifubi/data-dump-build

Merge pull request !2878 from mindspore_ding/checkpoint_mindspore_new

Merge pull request !3091 from VectorSL/batchnorm_grad

Merge pull request !3090 from VectorSL/batchnorm-cast

Merge pull request !3049 from liyong126/dataset_save_op

Merge pull request !3111 from peixu_ren/custom_gpu

Merge pull request !3033 from lianliguang/primi-decoupling-v2

Merge pull request !3069 from gziyan/optimizer_parallel_v2

Merge pull request !3081 from JoyLvliang/enable-stream-sync-when-context-is-graph-but-run-in-pynative

Update Slack join link.

Merge pull request !3058 from LiHongzhang/check_disk_space

Merge pull request !2966 from laiyongqiang/hcom_memreuse

Merge pull request !3085 from liuxiao93/adapt-ApplyCenteredRmsProp

Merge pull request !3109 from zhaozhenlong/fix-issue-ssim-raise-type-error

Merge pull request !3113 from dinghao/master

Merge pull request !3106 from Kang/optimization

Merge pull request !3108 from caifubi/data-dump-new

Merge pull request !3104 from fary86/fix_mstype_eq

Merge pull request !3089 from caifubi/data-dump-new

Merge pull request !3010 from ZiruiWu/random_tensor_ops

python part of random ops

added random select sub policy

validators added

comments added, remaining issues addressed

add more python test cases

fix ci

fix CI

fix order of include files

addr review cmts

addr review cmts

reorg file

fix compile err

address review cmts

address review cmts

Merge pull request !3100 from lichen/fix_model_zoo

Merge pull request !3059 from ZPaC/gpu-supports-to-create-groups

Merge pull request !2931 from zhoufeng/liantiao1

Merge pull request !3086 from ZhangQinghua/master

Merge pull request !3082 from chujinjin/fix_argmaxwithvalue_error_in_pynative_mode

Merge pull request !3094 from mindspore_ding/new_ding_parameter_mind

Merge pull request !2604 from lichen_101010/lichen_tmp