code: def radd(x1, x2, **kwargs):
      op = TensorAdd(**kwargs)
      return op.rcall(x1, x2)
  
file_path: mars/mars/tensor/arithmetic/add.py
imports: import numpy
  from functools import reduce
  from ...None import opcodes
  from ...serialization.serializables import BoolField
  from ..array_utils import device, as_same_device
  from ..datasource import scalar
  from ..utils import infer_dtype
  from .core import TensorBinOp, TensorMultiOp
  from .utils import arithmetic_operand, tree_op_estimate_size, TreeReductionBuilder
label_desc: Use image node_id 2 for calling a global function with example usage: radd(x1, x2) and returns: op