streaming.base.shared.get_shm_prefix(streams_local, streams_remote, world, retry=100)[source]#

Register or lookup our shared memory prefix.

  • streams_local (List[str]) – Local working dir of each stream, relative to /. We need to verify that there is no overlap with any other currently running StreamingDataset.

  • streams_remote (List[Union[str, None]]) – Remote working dir of each stream.

  • world (World) – Information about nodes, ranks, and workers.

  • retry (int) – Number of retries upon failure before raising an exception. Defaults to 100.


Tuple[int, SharedMemory] – Shared memory integer prefix and object. The name is required to be very short due to limitations of Python on Mac OSX.