code: def testCollectiveGatherShapeCheckFailure(self):
      with self.assertRaisesRegex(
          errors.InvalidArgumentError, "input should have rank > 0"
      ):
          collective_ops.gen_collective_ops.CollectiveGather(
              input=1,
              group_size=1,
              group_key=1,
              instance_key=1,
              shape=(3, 3, 3),
              communication_hint="auto",
              timeout_seconds=0,
              name="",
          )
  
      @def_function.function
      def run_all_reduce():
          group_key = 10
          instance_key = 20
          t0 = [1, 2, 3, 4]
          t1 = [5, 6, 7, 8]
          with ops.device("/CPU:0"):
              in0 = constant_op.constant(t0)
              c0 = collective_ops.all_reduce(
                  in0,
                  group_size=2,
                  group_key=group_key,
                  instance_key=instance_key,
                  merge_op="Add",
                  final_op="Id",
              )
          with ops.device("/CPU:1"):
              in1 = constant_op.constant(t1)
              c1 = collective_ops.all_reduce(
                  in1,
                  group_size=3,
                  group_key=group_key,
                  instance_key=instance_key,
                  merge_op="Add",
                  final_op="Id",
              )
          return c0, c1
  
      with self.assertRaisesRegex(
          errors.InternalError, "but that group has size"
      ):
          run_all_reduce()
  
imports: import time
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.core.protobuf import rewriter_config_pb2
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import kernels
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import collective_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.ops import while_loop
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 26 for calling the CollectiveOpTest obj's underlying member method code with example usage: obj.testCollectiveGatherShapeCheckFailure() and returns: c0,  c1