o }oi @sddlZddlZddlZddlmZddlmZddlm Z m Z m Z ddl Z ddl Z ddlZddlmZmZddlmZmZddlmZmZddlmZed Zd e eefd e eeffd d ZGdddeZ d#de eefded e ee ffddZ de eefd e eeffddZ!de eefd efddZ" d#de eefded e ee ffddZ#de eefd e eeffddZ$d#d e eefded e ee ffd!d"Z%dS)$N)BytesIO)Path)AnyDictUnion)FileSystemReaderload)BytesStorageMetadataTensorStorageMetadata)TarPath ZarrPathStore) _mock_importNeMonemo_checkpointreturncCs$t|}tj|rt|St|S)a  Creates Path / TarPath object suitable for navigating inside the nemo checkpoint. Args: nemo_checkpoint (Path, str): Path to the NeMo checkpoint. Returns: Path | TarPath: Suitable Path object for navigating through the checkpoint. )strospathisdirrr )r string_pathrR/home/ubuntu/.local/lib/python3.10/site-packages/nemo/export/utils/model_loader.py nemo_to_path$s rcs2eZdZdZdeeefddffdd ZZS)TarFileSystemReaderzReader that accepts both Path and TarPath checkpoint directory. The FileSystemReader works with TarPath, but expects a pure Path. It's enough to skip the Path check in __init__. rrNcs:t|tr t|n|}t|t|tr||_dSdS)z>Makes sure that super().__init__ gets a pure path as expected.N) isinstancer rsuper__init__r)selfr super_path __class__rrr;s    zTarFileSystemReader.__init__) __name__ __module__ __qualname____doc__rrr r __classcell__rrrrr4s&rFcheckpoint_dirload_extra_statescCsRt|}|}dd|jD}|r!|dd|jDt||d|S)aa Loads model state dictionary from torch_dist checkpoint. Args: checkpoint_dir (Path | TarPath): Path to the model weights directory. load_extra_states (bool): If set to true, loads BytesIO objects, related to the extra states. Returns: dict: Loaded model state dictionary (weights are stored in torch tensors). cSs0i|]\}}t|tr|tj|j|jjdqS))dtype)rr torchemptysize propertiesr(.0ktprrr Rs z4load_sharded_metadata_torch_dist..cSs i|] \}}t|tr|gqSr)rr r-rrrr1Zs )storage_reader)r read_metadatastate_dict_metadataitemsupdater)r&r' fs_readermetadata state_dictrrr load_sharded_metadata_torch_distCs  r:dirc Csvt|d}i}|D]-}|jdd}|d}tj|dd||jd|<Wdn1s3wYq |S) z Loads model extra states from the .pt shards. Args: dir (Path | TarPath): Path to the directory with sharded extra states. Returns: dict: State dictionary corresponding to the loaded extra states. z shard_*_*.pt.rrbT) weights_only/N)listglobnamesplitopenr)r)r;pt_files extra_statesfile shard_name opened_filerrr%load_sharded_pickle_extra_state_scaleas  rJsubdircCst|dgkS)z Checks if zarr directory contains extra states. Args: subdir (Path | TarPath): Directory inside the zarr checkpoint. Returns: bool: Is a directory with extra states z shard_0_*.pt)r@rA)rKrrrcontains_extra_statests rLcCs|r tjtgi}|D]Q}|sq|r$t|r$|t|q|d r`|j }t |}ddl }| |d}|jj dkrUt|ddtjtj||<qt|dd||<q|S)a' Loads model dictionary from the zarr format. Args: checkpoint_dir (Path | TarPath): Path to the NeMo checkpoint. load_extra_states (bool): If set to True, the function will load BufferIO objects with extra states. Returns: dict: Model state dictionary. z.zarrayrNrbfloat16)r) serializationadd_safe_globalsriterdiris_dirrLr6rJexistsrBr zarrrDr( from_numpyviewnumpyint16rN)r&r'sharded_state_dictrKkeyzstorerTarrrrrload_sharded_metadata_zarrs$      (r] nemo_pathcCs,|dr |dS|dr|dS|S)a Returns a Path pointing to the weights directory inside the NeMo checkpoint. Args: nemo_path (Path | TarPath): Path to the nemo checkpoint. Returns: Path | TarPath: Path to the weights directory inside the model checkpoint. model_weightsweights)rS)r^rrrnemo_weights_directorys  racheckpoint_pathcCst|}t|}|djdd }t|}Wdn1s wY|ddkr1t||dS|ddkrQtd t||dWdS1sLwYtd |dd ) a/ Loads NeMo state dictionary. Weights are stored in torch.Tensor Args: checkpoint_path (str | Path): Path to the NeMo checkpoint. load_extra_states (bool): If True, loads BytesIO objects, corresponding to the extra states. Returns: dict: Model state dictionary. z metadata.jsonrM)modeNsharded_backendrT)r' torch_distz1megatron.core.dist_checkpointing.strategies.torchzDistributed checkpoint backend z not supported) rrarDjsonrr]r r:NotImplementedError)rbr'r^ nemo_weightsf config_dictrrrload_model_weightss        rk)F)&rfloggingos.pathriorpathlibrtypingrrrrW tensorstorer)torch.distributed.checkpointrr%torch.distributed.checkpoint.metadatar r nemo.export.tarutilsr r nemo.export.utils._mock_importr getLoggerLOGGERrrrboolr:rJrLr]rarkrrrrsH    "   "    "',