Merge pull request !47 from wchunjiang/master

Merge pull request !50 from penn/fix_parallel_related_valuenode_merging_error

Merge pull request !45 from chentingting/permote_auto_prallel_performance

Previously function op_select_format and check_supported raise an exception directly on the tbe_process python side, but we don't deal with the exception, and raise an exeception on c++ side to frontend ME, that will cause some conflict when recycle resource on ME and tbe_process python interpreter.
This changes adding try...catch in function op_select_format and check_supported on the python side, and return the Exception string to c++ side, so that we can raise an exception to frontend ME and ME will deal with resouce clearning and exit.

Merge pull request !10 from YuJianfeng/master

Merge pull request !39 from zhaozhenlong/op/diag

Merge pull request !41 from leonwanghui/revert-merge-17-master

Merge pull request !32 from JoyLvliang/master

Merge pull request !40 from lianliguang/master

Merge pull request !27 from shibeiji/master

Merge pull request !17 from lichen/fix_cast_bug

Merge pull request !30 from chenhaozhe/enable-variable-acc-for-training-graph

Merge pull request !24 from 步学/structure-output

Signed-off-by: leonwanghui <leon.wanghui@huawei.com>