paddle报ValueError: The type of data we are trying to retrieve does not match the type

wrong reason

When using paddlepaddle to train the model, use numpy to randomly generate some data to train a thread model when reportingThe type of data we are trying to retrieve does not match the type of data currently contained in the container

error message

	pre_bias = _C_ops.matmul_v2(x, weight, 'trans_x', False, 'trans_y',
ValueError: (InvalidArgument) The type of data we are trying to retrieve does not match the type of data currently contained in the container.
  [Hint: Expected dtype() == paddle::experimental::CppTypeToDataType<T>::Type(), but received dtype():12 != paddle::experimental::CppTypeToDataType<T>::Type():13.] (at /paddle/paddle/phi/core/dense_tensor.cc:137)
  [operator < matmul_v2 > error]

Cause Analysis and Solutions

Because np.random.randthe generated data defaults to float64the data type of , and paddlepaddle does not support it, so we need to convert it into the float32data type of , the conversion code is as follows

np.random.rand(num_samples,2).astype("float32")