新建npu训练任务时指定2个计算节点报runtime error

复现步骤：
1.新建npu训练任务，指定计算节点2个
2.任务运行Failed
3.点击修改，创建新版本，这个任务能运行成功
期望结果：V0001、V0002版本都运行成功
实际结果：
1.V0001运行失败
2. V0002运行成功
两个版本的差别在于V0001有带device_target参数，V0002没有带（已知 bug #2021 ）。

多节点训练需要并行训练的代码，目前的训练示例是单卡单机训练，不是并行训练。

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#2022 新建npu训练任务时指定2个计算节点报runtime error