class_docstr: Sets parameters for ZeRO optimizations.
code: def overlap_comm_valid(cls, field_value, values):
      if field_value is None:
          assert (
              "stage" in values
          ), "DeepSpeedZeroConfig: 'stage' must be defined before 'overlap_comm'"
          field_value = values["stage"] == ZeroStageEnum.weights
      return field_value
  
file_path: H2O/h2o_flexgen/benchmark/third_party/DeepSpeed/deepspeed/runtime/zero/config.py
imports: from pydantic import Field, validator
  import sys
  from typing import Optional
  from enum import Enum
  from deepspeed.runtime.config_utils import get_scalar_param, pp_int, DeepSpeedConfigModel
  from deepspeed.utils import logger
  from .offload_config import DeepSpeedZeroOffloadParamConfig, DeepSpeedZeroOffloadOptimizerConfig, OffloadDeviceEnum
label_desc: Use image node_id 1 for calling the DeepSpeedZeroConfig obj's underlying member method code with example usage: obj.overlap_comm_valid(cls, field_value, values) and returns: field_value