code: def runRelatedness(inputPrefix, outPrefix, options):
      
      # The options
      new_options = ["--bfile", inputPrefix, "--genome-only",
                     "--min-nb-snp", str(options.min_nb_snp),
                     "--maf", options.maf,
                     "--out", "{}.ibs".format(outPrefix)]
      new_options += ["--indep-pairwise"] + options.indep_pairwise
      if options.sge:
          new_options.append("--sge")
          new_options += ["--line-per-file-for-sge",
                          str(options.line_per_file_for_sge)]
          if options.ibs_sge_walltime is not None:
              new_options += ["--sge-walltime", options.ibs_sge_walltime]
          if options.ibs_sge_nodes is not None:
              new_options += ["--sge-nodes"] + map(str, options.ibs_sge_nodes)
  
      # Checking the input file
      if not allFileExists([inputPrefix + i for i in [".bed", ".bim", ".fam"]]):
          msg = "{}: not a valid binary prefix".format(inputPrefix)
          raise ProgramError(msg)
  
      newBfile = None
      try:
          newBfile = Relatedness.main(new_options)
      except Relatedness.ProgramError as e:
          msg = "compute genome: {}".format(e)
          raise ProgramError(msg)
  
      return newBfile
docs: Run the relatedness step of the data clean up.
  
      :param inputPrefix: the prefix of the input file.
      :param outPrefix: the prefix of the output file.
      :param options: the options
  
      :type inputPrefix: str
      :type outPrefix: str
      :type options: argparse.Namespace
  
      :returns: the prefix of the new bfile.
  
      Runs :py:mod:`pyGenClean.RelatedSamples.find_related_samples` using the
      ``inputPrefix`` files and ``options`` options, and saves the results using
      the ``outPrefix`` prefix.