content: from .. import BACKEND
  
  
  SPCONV_ALGO = 'auto'    # 'auto', 'implicit_gemm', 'native'
  
  def __from_env():
      import os
          
      global SPCONV_ALGO
      env_spconv_algo = os.environ.get('SPCONV_ALGO')
      if env_spconv_algo is not None and env_spconv_algo in ['auto', 'implicit_gemm', 'native']:
          SPCONV_ALGO = env_spconv_algo
      print(f"[SPARSE][CONV] spconv algo: {SPCONV_ALGO}")
          
  
  __from_env()
  
  if BACKEND == 'torchsparse':
      from .conv_torchsparse import *
  elif BACKEND == 'spconv':
      from .conv_spconv import *
  