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A tff.program.ReleaseManager that releases values to a file system.

Inherits From: ReleaseManager

A tff.program.SavedModelFileReleaseManager is a utility for releasing values from a federated program to a file system and is used to release values from platform storage to customer storage in a federated program.

Values are released to the file system using the SavedModel (see tf.saved_model) format. When the value is released, if the value is a value reference or a structure containing value references, each value reference is materialized. The value is then flattened and released using the SavedModel format. The structure of the value is discarded.

See for more information about the SavedModel format.

root_dir A path on the file system to save program state. If this path does not exist it will be created.
prefix A string to use as the prefix for filenames.

ValueError If root_dir is an empty string.



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Releases value from a federated program.

value A tff.program.ReleasableStructure to release.
type_signature The tff.Type of value.
key An integer used to reference the released value; key represents a step in a federated program.