Merge pull request !6208 from wangmin0104/master

Merge pull request !6272 from wangnan39/fix_bug_in_bert

Merge pull request !6257 from chengxb7532/master

Merge pull request !6156 from hzf/master

Merge pull request !6188 from chenhaozhe/fix-bert-loss-print

Merge pull request !6245 from hwjiaorui/master

Merge pull request !6237 from yepei6/modify_mobilenetv2

Merge pull request !6216 from gongdaguo/use_new_download

Merge pull request !6210 from liyanliu96/liyan

delete mobilenet st

read device num

Merge pull request !6161 from lvchangquan/master

debug mindata

use new download

Merge pull request !6137 from TuDouNi/master

Merge pull request !6174 from yuchaojie/transformer2

Merge pull request !6173 from zhaoting/mobilenet

Merge pull request !6159 from wangnan39/optim_train_one_step_cell

Merge pull request !6113 from xiefangqi/md_unify_seed

Merge pull request !6063 from hwjiaorui/master

Merge pull request !6052 from zhanke/bgcf

Merge pull request !6139 from chenhaozhe/fix-hccl-env

Merge pull request !6135 from yao_yf/wide_and_deep_Davinci_to_Ascend

Merge pull request !6057 from yuchaojie/transformer2

Merge pull request !6082 from yepei6/mobilentv2_debug

modify step output

modify split

read json split

fix bug of args

set dataset sink mode

modify dataset sink mode

Merge pull request !6073 from chenhaozhe/fix-doc-error

Merge pull request !5916 from caozhou/unify_conv2d_depthwise2d

Merge pull request !6079 from ZPaC/master-1.0-optimize-ps

Merge pull request !6053 from wukesong/limit_cv_for_deeplabv3