tf.raw_ops.CollectiveReduceV2

Mutually reduces multiple tensors of identical type and shape.

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

is_stateless means each op does not need control dependencies to other collective ops. In this case, keys that are unique at runtime (e.g. instance_key) should be used to distinguish collective groups.

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.
is_stateless An optional bool. Defaults to False.
max_subdivs_per_device An optional int. Defaults to -1.
name A name for the operation (optional).

A Tensor. Has the same type as input.