Merge pull request !2877 from wukesong/add_lenet_alexnet_readme

Merge pull request !1898 from caifubi/data-dump

Merge pull request !3000 from lianliguang/master

Merge pull request !2968 from huanghui/fix-dump-backend-vm-build-pb

Merge pull request !2955 from linqingke/mass

Merge pull request !2955 from linqingke/mass

Merge pull request !3022 from ms_yan/para_to_device

Merge pull request !2997 from jiangjinsheng/issue_fix4

Merge pull request !3017 from ZPaC/add-ps-optimizer-kernel

Merge pull request !2925 from peixu_ren/custom_gpu

Merge pull request !2943 from vlne-v1/quant_export_bugfix

Merge pull request !2875 from wangqiuliang/add-grad-all-in-pynative

Merge pull request !2914 from xychow/fix-abstractref-join

Merge pull request !2988 from liuxiao93/ROIAlign

Merge pull request !3020 from ZPaC/add-ps-embedding-look-up-kernel

Merge pull request !2773 from 章一智/cpp_api

Merge pull request !3019 from ZPaC/add-ps-optimizer-build-info

Merge pull request !3014 from ZPaC/add-ps-optim-info

Merge pull request !3015 from ZPaC/fix-ge-compile-error

Merge pull request !2941 from xiefangqi/md_add_offsets_feature

Merge pull request !3001 from zhoufeng/fix-random-ci-fail

Merge pull request !3002 from zhangbuxue/add_arg_check_for_enumerate

Merge pull request !2934 from heleiwang/gnn_july

Merge pull request !3005 from Margaret_wangrui/code_review

Merge pull request !2776 from ZiruiWu/master

Merge pull request !2936 from ms_yan/config_modify

Merge pull request !2978 from Margaret_wangrui/switch_input