Defined in tensorflow/contrib/tpu/__init__.py.
Ops related to Tensor Processing Units.
Modules
profiler module: Classes for TPU trace events.
Classes
class AsyncCheckpointSaverHook: Saves checkpoints every N steps or seconds.
class CrossShardOptimizer: An optimizer that averages gradients across TPU shards.
class DeviceAssignment: Mapping from logical cores in a computation to the physical TPU topology.
class InfeedQueue: A helper object to build a device infeed queue.
class InputPipelineConfig: Please see the definition of these values in TPUConfig.
class RunConfig: RunConfig with TPU support.
class TPUConfig: TPU related configuration required by TPUEstimator.
class TPUDistributionStrategy: The strategy to run Keras model on TPU.
class TPUEstimator: Estimator with TPU support.
class TPUEstimatorSpec: Ops and objects returned from a model_fn and passed to TPUEstimator.
class Topology: Describes a set of TPU devices.
Functions
batch_parallel(...): Shards computation along the batch dimension for parallel execution.
bfloat16_scope(...): Scope class for bfloat16 variables so that the model uses custom getter.
core(...): Returns the device name for a core in a replicated TPU computation.
cross_replica_sum(...): Sum the input tensor across replicas according to group_assignment.
device_assignment(...): Computes a device_assignment of a computation across a TPU topology.
export_estimator_savedmodel(...): Export Estimator trained model for TPU inference.
infeed_dequeue(...): A placeholder op for a value that will be fed into the computation.
infeed_dequeue_tuple(...): A placeholder op for values fed into the TPU simultaneously as a tuple.
infeed_enqueue(...): An op which feeds a single Tensor value into the computation.
infeed_enqueue_tuple(...): An op which feeds multiple Tensor values into the computation as an XLA tuple.
initialize_system(...): Initializes a distributed TPU system for use with TensorFlow.
keras_to_tpu_model(...): Copy model along with weights to the TPU. (experimental)
outfeed_dequeue(...): Retrieves a single tensor from the computation outfeed. This operation will
outfeed_dequeue_tuple(...): Retrieve multiple values that will be emitted by the computation as an XLA
outfeed_enqueue(...): An op which emits a single Tensor value from an XLA computation.
outfeed_enqueue_tuple(...): An op which emits multiple Tensor values from an XLA computation.
outside_compilation(...): Builds part of a computation outside any current TPU replicate scope.
repeat(...): Builds a training loop that executes a fixed number of iterations.
replicate(...): Builds a graph operator that runs a replicated TPU computation.
rewrite(...): Rewrites computation for execution on a TPU system.
shard(...): Shards computation for parallel execution.
shutdown_system(...): Shuts down a running a distributed TPU system.
while_loop(...): Builds a training loop for TPUs.