Merge pull request !350 from lianliguang/chang-tuple-output-to-make-tuple

format code

remove test case for fp64

add back scalar manipulation

remove save graph

Merge pull request !317 from huanghui/derelu_fusion_pass

fix pylint

Merge pull request !402 from yangzhenzhang/square

Merge pull request !383 from zhaozhenlong/cell/psnr

Merge pull request !286 from wangqiuliang/resolve-pynative-operator-issue

Merge pull request !183 from JunhanHu/cpp_sampler

Merge pull request !386 from changzherui/modify-ut

Merge pull request !343 from amongo/FixGradUsingInterfaceExtend

Merge pull request !217 from zhangbuxue/support_pow_operator

Merge pull request !379 from JichenZhao/groupnorm

Merge pull request !382 from yangzhenzhang/sigmoidloss

add test case for grad concat

fix usage in test framework

fix testcase

format code

Merge pull request !346 from laiyongqiang/develop

Merge pull request !304 from Xiaoda/modify-not-fully-use-devices-and-strategy-checking

Merge pull request !243 from h.farahat/nested_repeat

Merge pull request !294 from zhaozhenlong/cell/ssim

Merge pull request !312 from xiefangqi/xfq_apply_branch

Merge pull request !289 from YuJianfeng/find_op

Merge pull request !287 from vlne-v1/I1EFUD-the-output-is-not-tuple

Merge pull request !260 from lianliguang/refactor-padding-strategy

Merge pull request !232 from Xiaoda/model-memory-cost-in-auto-parallel

Merge pull request !226 from wangnan39/expend_conv_stride_to_2d