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tf.distribute.CrossDeviceOps

TensorFlow 1 version View source on GitHub

Base class for cross-device reduction and broadcasting algorithms.

Methods

batch_reduce

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Reduce PerReplica objects in a batch.

Reduce each first element in value_destination_pairs to each second element which indicates the destinations.

Args
reduce_op Indicates how per_replica_value will be reduced. Accepted values are tf.distribute.ReduceOp.SUM, tf.distribute.ReduceOp.MEAN.
value_destination_pairs a list or a tuple of tuples of PerReplica objects (or tensors with device set if there is one device) and destinations.

Returns
a list of Mirrored objects.

Raises
ValueError if value_destination_pairs is not a list or a tuple of tuples of PerReplica objects and destinations

batch_reduce_implementation

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Implementation of reduce PerReplica objects in a batch.

Reduce each first element in value_destination_pairs to each second element which indicates the destinations.

Args
reduce_op Indicates how per_replica_value will be reduced. Accepted values are tf.distribute.ReduceOp.SUM, tf.distribute.ReduceOp.MEAN.
value_destination_pairs a list or a tuple of tuples of PerReplica objects (or tensors with device set if there is one device) and destinations.

Returns
a list of Mirrored objects.

Raises
ValueError if value_destination_pairs is not a list or a tuple of tuples of PerReplica objects and destinations

broadcast

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Broadcast the tensor to destinations.

Args
tensor the tensor to broadcast.
destinations the broadcast destinations.

Returns
a Mirrored object.

broadcast_implementation

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Implementation of broadcast the tensor to destinations.

Args
tensor the tensor to broadcast.
destinations the broadcast destinations.

Returns
a Mirrored object.

reduce

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Reduce per_replica_value to destinations.

It runs the reduction operation defined by reduce_op and put the result on destinations.

Args
reduce_op Indicates how per_replica_value will be reduced. Accepted values are tf.distribute.ReduceOp.SUM, tf.distribute.ReduceOp.MEAN.
per_replica_value a PerReplica object or a tensor with device set.
destinations the reduction destinations.

Returns
a Mirrored object.

Raises
ValueError if per_replica_value can't be converted to a PerReplica object.

reduce_implementation

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The implementation of reduce of per_replica_value to destinations.

It runs the reduction operation defined by reduce_op and put the result on destinations.

Args
reduce_op Indicates how per_replica_value will be reduced. Accepted values are tf.distribute.ReduceOp.SUM, tf.distribute.ReduceOp.MEAN.
per_replica_value a PerReplica object or a tensor with device set.
destinations the reduction destinations.

Returns
a Mirrored object.

Raises
ValueError if per_replica_value can't be converted to a PerReplica object.