MindSpore报错TypeError: Can not select a valid kernel info for [Default/Pow-op0] in AI CORE or AI CPU

1 报错描述

1.1 系统环境

Hardware Environment(Ascend/GPU/CPU): GPU

Software Environment:

– MindSpore version (source or binary): 1.6.0

– Python version (e.g., Python 3.7.5): 3.7.6

– OS platform and distribution (e.g., Linux Ubuntu 16.04): Ubuntu 4.15.0-74-generic

– GCC/Compiler version (if compiled from source):

1.2 基本信息

1.2.1 脚本

训练脚本是通过构建Pow的单算子网络，对第一个输入的每个值进行幂运算。脚本如下：

 01 class Net(nn.Cell):
 02   def __init__(self):
 03     super(Net, self).__init__()
 04     self.pow = ops.Pow()
 05   def construct(self, x,y):
 06     output = self.pow(x, y)
 07     return output
 08 net = Net()
 09 x = Tensor(np.array