Source code for pyspark.ml.deepspeed.deepspeed_distributor

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import json
import sys
import tempfile
from typing import (
    Union,
    Callable,
    List,
    Dict,
    Optional,
    Any,
)

from pyspark.ml.torch.distributor import TorchDistributor


[docs]class DeepspeedTorchDistributor(TorchDistributor): _DEEPSPEED_SSL_CONF = "deepspeed.spark.distributor.ignoreSsl" def __init__( self, numGpus: int = 1, nnodes: int = 1, localMode: bool = True, useGpu: bool = True, deepspeedConfig: Optional[Union[str, Dict[str, Any]]] = None, ): """ This class is used to run deepspeed training workloads with spark clusters. The user has the option to specify the number of gpus per node and the number of nodes (the same as if running from terminal), as well as specify a deepspeed configuration file. Parameters ---------- numGpus: int The number of GPUs to use per node (analogous to num_gpus in deepspeed command). nnodes: int The number of nodes that should be used for the run. localMode: bool Whether or not to run the training in a distributed fashion or just locally. useGpu: bool Boolean flag to determine whether to utilize gpus. deepspeedConfig: Union[Dict[str,Any], str] or None: The configuration file to be used for launching the deepspeed application. If it's a dictionary containing the parameters, then we will create the file. If None, deepspeed will fall back to default parameters. Examples -------- Run Deepspeed training function on a single node >>> def train(learning_rate): ... import deepspeed ... # rest of training function ... return model >>> distributor = DeepspeedTorchDistributor( ... numGpus=4, ... nnodes=1, ... useGpu=True, ... localMode=True, ... deepspeedConfig="path/to/config.json") >>> output = distributor.run(train, 0.01) Run Deepspeed training function on multiple nodes >>> distributor = DeepspeedTorchDistributor( ... numGpus=4, ... nnodes=3, ... useGpu=True, ... localMode=False, ... deepspeedConfig="path/to/config.json") >>> output = distributor.run(train, 0.01) """ num_processes = numGpus * nnodes self.deepspeed_config = deepspeedConfig super().__init__( num_processes, localMode, useGpu, _ssl_conf=DeepspeedTorchDistributor._DEEPSPEED_SSL_CONF, ) self.cleanup_deepspeed_conf = False @staticmethod def _get_deepspeed_config_path(deepspeed_config: Union[str, Dict[str, Any]]) -> str: if isinstance(deepspeed_config, dict): with tempfile.NamedTemporaryFile(mode="w+", delete=False, suffix=".json") as file: json.dump(deepspeed_config, file) return file.name deepspeed_config_path = deepspeed_config # Empty value means the deepspeed will fall back to default settings. if deepspeed_config is None: return "" return deepspeed_config_path @staticmethod def _create_torchrun_command( input_params: Dict[str, Any], train_path: str, *args: Any ) -> List[str]: local_mode = input_params["local_mode"] num_processes = input_params["num_processes"] deepspeed_config = input_params["deepspeed_config"] deepspeed_config_path = DeepspeedTorchDistributor._get_deepspeed_config_path( deepspeed_config ) torchrun_args, processes_per_node = TorchDistributor._get_torchrun_args( local_mode, num_processes ) args_string = list(map(str, args)) command_to_run = [ sys.executable, "-m", "torch.distributed.run", *torchrun_args, f"--nproc_per_node={processes_per_node}", train_path, *args_string, "--deepspeed", ] # Don't have the deepspeed_config argument if no path is provided or no parameters set if deepspeed_config_path == "": return command_to_run return command_to_run + ["--deepspeed_config", deepspeed_config_path] @staticmethod def _run_training_on_pytorch_file( input_params: Dict[str, Any], train_path: str, *args: Any, **kwargs: Any ) -> None: if kwargs: raise ValueError( "DeepspeedTorchDistributor with pytorch file doesn't support keyword arguments" ) log_streaming_client = input_params.get("log_streaming_client", None) training_command = DeepspeedTorchDistributor._create_torchrun_command( input_params, train_path, *args ) DeepspeedTorchDistributor._execute_command( training_command, log_streaming_client=log_streaming_client )
[docs] def run(self, train_object: Union[Callable, str], *args: Any, **kwargs: Any) -> Optional[Any]: # If the "train_object" is a string, then we assume it's a filepath. # Otherwise, we assume it's a function. return self._run( train_object, DeepspeedTorchDistributor._run_training_on_pytorch_file, *args, **kwargs )