Submit function of local jobs.

def submit(args):
    gpus = args.gpus.strip().split(',')
    """Submit function of local jobs."""
    def mthread_submit(nworker, nserver, envs):
        """
        customized submit script, that submit nslave jobs, each must contain args as parameter
        note this can be a lambda function containing additional parameters in input

        Parameters
        ----------
        nworker: number of slave process to start up
        nserver: number of server nodes to start up
        envs: enviroment variables to be added to the starting programs
        """
        procs = {}
        for i, gpu in enumerate(gpus):
            for j in range(args.num_threads):
                procs[i] = Thread(target=exec_cmd, args=(args.command + ['--gpus=%s'%gpu], 'worker', i*args.num_threads+j, envs))
                procs[i].setDaemon(True)
                procs[i].start()
        for i in range(len(gpus)*args.num_threads, len(gpus)*args.num_threads + nserver):
            procs[i] = Thread(target=exec_cmd, args=(args.command, 'server', i, envs))
            procs[i].setDaemon(True)
            procs[i].start()

    # call submit, with nslave, the commands to run each job and submit function
    tracker.submit(args.num_threads*len(gpus), args.num_servers, fun_submit=mthread_submit,
                   pscmd=(' '.join(args.command)))