o <&i' @s4ddlZddlZddlmZmZmZmZddlZddlm Z m Z ddl m Z m Z mZgdZde dee fdd Zde d eedee fd d Zd e defddZe jfd e dedede fddZd e defddZd d e deede fddZd e dede fddZd e defddZd e dejde fddZdS)!N)AnyListOptionalSet)_ShardingIterDataPipeSHARDING_PRIORITIES)DataPipe DataPipeGraph traverse_dps)apply_random_seedapply_shardingapply_shuffle_seedapply_shuffle_settingsget_all_graph_pipesgraphreturncCs t|tSN)_get_all_graph_pipes_helperset)rrJC:\wamp64\www\opt\env\Lib\site-packages\torch/utils/data/graph_settings.pyrs rid_cachecCsLg}|D]\}\}}||vrq|||||t||q|Sr)itemsaddappendextendr)rrresultsZdp_iddatapipe sub_graphrrrrs  rrcCs,t|trdSt|drt|jrdSdS)NTr F) isinstancerhasattrinspectismethodr rrrr_is_sharding_datapipe&s r$num_of_instances instance_idcs(t|}dfdd ||S)z Apply dynamic sharding over the ``sharding_filter`` DataPipe that has a method ``apply_sharding``. RuntimeError will be raised when multiple ``sharding_filter`` are presented in the same branch. Ncs|D]A\}}d}t|r:|durtd|d|t|j}t|jdkr0|n|jd|}|dur@|}||qdS)NzoSharding twice on a single pipeline is likely unintended and will cause data loss. Sharding already applied to z while trying to apply to )sharding_group)valuesr$ RuntimeErrorr! signaturer len parameters)rZ prev_appliedZdprZappliedsig_helperr&r%r(rrr09s$  zapply_sharding.._helperr)r )rr%r&r(rrr/rr .s r cCs8t|dr t|ds dSt|jrt|jsdSdS)N set_shuffleset_seedFT)r r!r"r1r2r#rrr_is_shuffle_datapipePs r3shufflecCsb|dur|St|}t|}dd|D}|s%|r%td|}|g}|D]}||q'|S)aE Traverse the graph of ``DataPipes`` to find and set shuffle attribute. Apply the method to each `DataPipe` that has APIs of ``set_shuffle`` and ``set_seed``. Args: datapipe: DataPipe that needs to set shuffle attribute shuffle: Shuffle option (default: ``None`` and no-op to the graph) NcSsg|]}t|r|qSr)r3).0piperrr hsz*apply_shuffle_settings..z`shuffle=True` was set, but the datapipe does not contain a `Shuffler`. Adding one at the end. Be aware that the default buffer size might not be sufficient for your task.)r rwarningswarnr4r1)rr4r all_pipesZ shufflersZshufflerrrrrXs  rrngcCstdt||S)Nz`apply_shuffle_seed` is deprecated since 1.12 and will be removed in the future releases. Please use `apply_random_seed` instead.)r8r9r )rr;rrrr ws r cCst|dr t|jr dSdS)Nr2TF)r r!r"r2r#rrr_is_random_datapipesr<cCst|}t|}t}g}|D]}t||vrqt|r(|||t|q|D]}ttj dtj dj |d }| |q+|S)a6 Traverse the graph of ``DataPipes`` to find random ``DataPipe`` with an API of ``set_seed``. Then set the random seed based on the provided RNG to those ``DataPipe``. Args: datapipe: DataPipe that needs to set randomness rng: Random number generator to generate random seeds r)Zdtype) generator)r rridr<rrinttorchemptyZint64Zrandom_itemr2)rr;rr:cacheZrandom_datapipesr6Z random_seedrrrr s     r r)r!r8typingrrrrr@Z(torch.utils.data.datapipes.iter.shardingrrZtorch.utils.data.graphrr r __all__rr?rboolr$DEFAULTr r3rr r< Generatorr rrrrs.    "