$ pm_thr_compdat.pl
$VAR1 = {
          '1' => {
                   'hostname' => 'h1',
                   'host_info' => {
                                    'hinfo0' => 'X',
                                    'hinfo1' => 'Y',
                                    'hinfo2' => 'Z'
                                  }
                 },
          '0' => {
                   'hostname' => 'h0',
                   'host_info' => {
                                    'hinfo0' => 'A',
                                    'hinfo1' => 'B',
                                    'hinfo2' => 'C'
                                  }
                 }
        };