# tf.raw_ops.CollectiveReduceV2

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Mutually reduces multiple tensors of identical type and shape.

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

[`tf.compat.v1.raw_ops.CollectiveReduceV2`](https://www.tensorflow.org/api_docs/python/tf/raw_ops/CollectiveReduceV2)

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    tf.raw_ops.CollectiveReduceV2(
        input,
        group_size,
        group_key,
        instance_key,
        ordering_token,
        merge_op,
        final_op,
        communication_hint='auto',
        timeout_seconds=0,
        max_subdivs_per_device=-1,
        name=None
    )

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| ## Args ||
|---|---|
| `input` | A `Tensor`. Must be one of the following types: `bfloat16`, `float32`, `half`, `float64`, `int32`, `int64`. |
| `group_size` | A `Tensor` of type `int32`. |
| `group_key` | A `Tensor` of type `int32`. |
| `instance_key` | A `Tensor` of type `int32`. |
| `ordering_token` | A list of `Tensor` objects with type `resource`. |
| `merge_op` | A `string` from: `"Min", "Max", "Mul", "Add"`. |
| `final_op` | A `string` from: `"Id", "Div"`. |
| `communication_hint` | An optional `string`. Defaults to `"auto"`. |
| `timeout_seconds` | An optional `float`. Defaults to `0`. |
| `max_subdivs_per_device` | An optional `int`. Defaults to `-1`. |
| `name` | A name for the operation (optional). |

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| ## Returns ||
|---|---|
| A `Tensor`. Has the same type as `input`. ||

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