code: function(opt) {
          //console.log(opt)
          if (isStarted) return;
          var self = this;
  
          if (!opt) {
              throw "Options required to start manager : \"cacheDir\", \"tcp\", \"port\"";
          }
          cacheDir = opt.cacheDir + '/' + scheduler_id;
          TCPip = opt.tcp;
          TCPport = opt.port;
          jobProfiles = opt.jobProfiles;
          cycleLength = opt.cycleLength ? parseInt(opt.cycleLength) : 5000;
          if (opt.hasOwnProperty('forceCache')) {
              cacheDir = opt.forceCache;
          }
  
          if (opt.hasOwnProperty('probPreviousCacheDir')) {
              probPreviousCacheDir = opt.probPreviousCacheDir;
          }
          if(debugMode)
              console.log("Attempting to create cache for process at " + cacheDir);
          try {
              fs.mkdirSync(cacheDir);
          } catch (e) {
              if (e.code != 'EEXIST') throw e;
              console.log("Cache found already found at " + cacheDir);
          }
          if(debugMode)
              console.log('[' + TCPip + '] opening socket at port ' + TCPport);
          var s = _openSocket(TCPport);
          data = '';
          s.on('listening', function(socket) {
                  isStarted = true;
                  if(debugMode) {
                      console.log("Starting pulse monitoring");
                      console.log("cache Directory is " + cacheDir);
                  }
                  core = setInterval(function() {
                      _pulse()
                  }, 500);
                  warden = setInterval(function() {
                      self.jobWarden()
                  }, cycleLength);
  
                  console.log("       --->jobManager " + scheduler_id + " ready to process jobs<---\n\n");
                  eventEmitter.emit("ready");
              })
              .on('data', _parseMessage);
      }
docs: Starts the job manager
  
  @param  {Object}ManagerSpecs
  @param {ManagerSpecs} cacheDir{String} Directory used for jobs caching
  @param {ManagerSpecs} tcp{String} ip adress of the master node for netSocket
  @param {ManagerSpecs} port{String} port number of the netSocket
  @param {ManagerSpecs} slurmBinaries{String} path to slurm executable binaries
  @return {String}