tf.distribute.CrossDeviceOps
Base class for cross-device reduction and broadcasting algorithms.
tf.distribute.CrossDeviceOps()
Methods
batch_reduce
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batch_reduce(
reduce_op, value_destination_pairs
)
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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batch_reduce_implementation(
reduce_op, value_destination_pairs
)
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(
tensor, destinations
)
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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broadcast_implementation(
tensor, destinations
)
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(
reduce_op, per_replica_value, destinations
)
Reduce per_replica_value to destinations.
It runs the reduction operation defined by reduce_op and put the result on destinations.
| Returns |
|---|
| a Mirrored object. |
| Raises |
|---|
ValueError | if per_replica_value can't be converted to a PerReplica object. |
reduce_implementation
View source
reduce_implementation(
reduce_op, per_replica_value, destinations
)
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.
| Returns |
|---|
| a Mirrored object. |
| Raises |
|---|
ValueError | if per_replica_value can't be converted to a PerReplica object. |