code: def run_quant_dequant(inputs, groups, bits):
      global quantizer_cuda_module
  
      if quantizer_cuda_module is None:
          quantizer_cuda_module = QuantizerBuilder().load()
      return quantizer_cuda_module.ds_quantize_fp16(
          inputs, groups, bits
      )
  
file_path: deepspeed/tests/unit/ops/quantizer/test_fake_quantization.py
imports: import torch
  import pytest
  import deepspeed
  from deepspeed.accelerator import get_accelerator
  from deepspeed.ops.op_builder import QuantizerBuilder
label_desc: Use image node_id 3 for calling a global function with example usage: run_quant_dequant(inputs, groups, bits) and returns: quantizer_cuda_module